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All questions of History of communication for Grade 2 Exam

Select the correct statement from the following.
  • a)
    Communication begins with language.
  • b)
    Dolphins create unique, high-pitched clicking sounds that appear to be used for communication among themselves.
  • c)
    A revolution in wireless telecommunications began in the 1900s.
  • d)
    All of the above
Correct answer is option 'D'. Can you explain this answer?

Anjana Singh answered
The correct statement from the given options is option 'D', which states that all of the statements mentioned are correct.

Explanation:
Let's analyze each statement to understand why they are correct:

a) Communication begins with language:
Communication is the process of conveying information or exchanging ideas between two or more individuals. Language is a system of communication that uses symbols, such as words, gestures, or sounds, to express meaning. It is the primary means of communication for humans. Therefore, it is correct to say that communication begins with language.

b) Dolphins create unique, high-pitched clicking sounds that appear to be used for communication among themselves:
Dolphins are highly intelligent aquatic mammals known for their sophisticated communication abilities. They produce a variety of sounds, including clicks, whistles, and body movements, to communicate with other dolphins. These unique, high-pitched clicking sounds are believed to play a crucial role in their communication, allowing them to navigate, locate food, and coordinate group activities. Hence, this statement is also correct.

c) A revolution in wireless telecommunications began in the 1900s:
The 1900s marked a significant turning point in the field of telecommunications, particularly with the advent of wireless communication. Inventors and scientists like Guglielmo Marconi and Nikola Tesla made groundbreaking discoveries and developments in wireless communication during this time. The invention of the radio and the subsequent advancements in wireless technology revolutionized long-distance communication. Thus, it is accurate to say that a revolution in wireless telecommunications began in the 1900s.

Conclusion:
All the statements mentioned in options 'a', 'b', and 'c' are correct. Communication indeed begins with language, dolphins do create unique clicking sounds for communication, and a revolution in wireless telecommunications did start in the 1900s. Therefore, option 'D' is the correct answer.

This airport was constructed in an area of 865 acres of land, which belongs to HAL and the Airports Authority of India.
  • a)
    Bangalore Airport
  • b)
    Mangalore Airport
  • c)
    Indira Gandhi Airport
  • d)
    Chhatrapati Shivaji International Airport
Correct answer is option 'A'. Can you explain this answer?

Aravind Unni answered
The correct answer is option 'A', Bangalore Airport.

Explanation:


The airport that was constructed in an area of 865 acres of land, which belongs to HAL (Hindustan Aeronautics Limited) and the Airports Authority of India, is the Bangalore Airport.

Details:


Bangalore Airport:

- Bangalore Airport, also known as Kempegowda International Airport, is located in Devanahalli, Bangalore.
- It is the third busiest airport in India in terms of passenger traffic.
- The airport serves as a hub for various airlines and offers both domestic and international flights.
- It is operated by Bangalore International Airport Limited (BIAL), a public-private consortium.
- The airport is named after Kempegowda, the founder of Bangalore.
- It was opened in 2008 and is spread over an area of 4,000 acres.

Hindustan Aeronautics Limited (HAL):

- Hindustan Aeronautics Limited (HAL) is a state-owned aerospace and defense company headquartered in Bangalore, India.
- HAL is engaged in the design, development, manufacture, and maintenance of aircraft, helicopters, engines, and related systems.
- It is considered one of Asia's largest aerospace companies.
- HAL owns a significant portion of the land on which Bangalore Airport is constructed.

Airports Authority of India (AAI):

- The Airports Authority of India (AAI) is a statutory body responsible for the management and development of airports in India.
- It was formed in 1995 and is under the Ministry of Civil Aviation.
- AAI owns and manages more than 100 airports across the country, including Bangalore Airport.

Conclusion:


In conclusion, the airport that was constructed in an area of 865 acres of land, which belongs to HAL and the Airports Authority of India, is the Bangalore Airport.

E-mail means:
  • a)
    Expended mail
  • b)
    Easy mail
  • c)
    Electronic mail
  • d)
    Early mail
Correct answer is option 'C'. Can you explain this answer?

Pranav Singh answered
Messages distributed by electronic means from one computer user to one or more recipients via a network.

The cheapest and oldest mode of Transport
  • a)
    Water transport
  • b)
    Air transport
  • c)
    Land transport
  • d)
    Special transport.
Correct answer is option 'A'. Can you explain this answer?

Nishanth Unni answered
Introduction:
In this question, we are asked to identify the cheapest and oldest mode of transportation among the options provided: water transport, air transport, land transport, and special transport. The correct answer is option 'A', which refers to water transport. Let's delve into the details and understand why water transport is the cheapest and oldest mode of transportation.

Water Transport:
Water transport refers to the movement of goods and passengers through waterways such as rivers, canals, lakes, and oceans. It is considered the cheapest and oldest mode of transportation due to several reasons.

1. Cost-effective:
- Water transport is relatively inexpensive compared to other modes of transportation. It requires less infrastructure development and maintenance cost.
- The cost of building and maintaining water transport vessels, such as boats, ships, and barges, is lower than constructing and maintaining airports, roads, and railways.

2. Fuel efficiency:
- Water transport is highly fuel-efficient, especially when compared to air transport. Ships and boats can carry a large number of goods and passengers using relatively less fuel.
- This fuel efficiency helps in reducing transportation costs and makes water transport an economical choice.

3. Accessibility:
- Water transport provides access to remote areas that are not easily reachable by other modes of transportation.
- It connects landlocked countries or regions to the rest of the world, facilitating trade and economic growth.

4. Oldest mode of transportation:
- Water transport has been used for centuries, starting with the use of simple rafts and canoes. It played a crucial role in the development of early civilizations by enabling trade and exploration.
- Ancient civilizations like the Egyptians, Greeks, and Romans extensively used water transport for trade and military purposes.

Conclusion:
In conclusion, water transport is the cheapest and oldest mode of transportation among the options provided. Its cost-effectiveness, fuel efficiency, accessibility, and historical significance make it an important mode of transportation even in modern times.

State True or False and choose the correct option.
(i) Submarines and steamers are the vehicles which move on land.
(ii) Early man used to travel by walking.
(iii) Bicycles move by using muscle power.
(iv) Air transport is the slowest means of transport.
  • a)
    FTTF
  • b)
    FFTT
  • c)
    TTFF
  • d)
    TFTF
Correct answer is option 'A'. Can you explain this answer?

Pranab Verma answered
True or False:

(i) Submarines and steamers are the vehicles which move on land.

False

Explanation:
- Submarines and steamers are not vehicles that move on land.
- Submarines are designed to travel underwater, while steamers are large ships that navigate on water bodies such as oceans, seas, and rivers.
- They are not meant to move on land.

(ii) Early man used to travel by walking.

True

Explanation:
- Early man did not have the means to travel using vehicles like cars, bicycles, or airplanes.
- They used to travel by walking long distances to reach their destinations.
- Walking was the primary mode of transportation for humans in ancient times.

(iii) Bicycles move by using muscle power.

True

Explanation:
- Bicycles are human-powered vehicles that move by using muscle power.
- When a person pedals the bicycle, the energy generated by their muscles propels the bicycle forward.
- Bicycles do not require any external fuel or power source.

(iv) Air transport is the slowest means of transport.

False

Explanation:
- Air transport is one of the fastest means of transport.
- Airplanes can travel at high speeds, covering long distances in a relatively short period of time.
- This makes air transport a preferred choice for long-distance travel, especially when time is a crucial factor.

Cellular phones can independent to cables because-
  • a)
    It has wires
  • b)
    It is with cables.
  • c)
    They are wireless
  • d)
    None of the above
Correct answer is option 'C'. Can you explain this answer?

Arjun Mehta answered
Understanding Wireless Technology
Cellular phones have revolutionized communication by eliminating the need for physical cables. This technology allows users to communicate freely without being tethered to a landline.
How Cellular Phones Work
- Radio Waves: Cellular phones transmit and receive signals using radio waves. These waves can travel through the air, enabling wireless communication.
- Cell Towers: The phone connects to nearby cell towers, which relay the signals to and from the network. This infrastructure allows for seamless communication over long distances.
Benefits of Wireless Communication
- Mobility: Users can move freely while using their phones without the constraints of cables. This allows for greater convenience and flexibility in communication.
- Accessibility: Wireless technology enables access to communication services in remote or hard-to-reach areas where traditional wired lines may not be available.
- Ease of Use: Wireless devices are often easier to set up and use since they do not require complex installations of wires and cables.
Conclusion
The ability of cellular phones to operate independently of cables is primarily due to their wireless technology. By utilizing radio waves and a network of cell towers, cellular phones provide users with the freedom to communicate anytime and anywhere, making option 'C' the correct answer.

Select the odd one out:
  • a)
    Landscape
  • b)
    An adventurer
  • c)
    Scenery
  • d)
    Countryside
Correct answer is option 'B'. Can you explain this answer?

Riya Singh answered

Key Points:
- The task is to select the odd one out from the given options.
- The options are: Landscape, An adventurer, Scenery, and Countryside.
- The odd one out is option B: An adventurer.
- The reasoning behind this choice is that the other options all refer to natural or geographical elements, while an adventurer refers to a person or occupation.
Detailed Explanation:
To determine the odd one out, we need to analyze each option and identify any distinguishing characteristics. Here is a breakdown of each option:
1. Landscape:
- A landscape refers to the visible features of an area of land, including physical elements such as mountains, hills, rivers, and forests.
- It is a broad term that encompasses the natural scenery and physical environment of a particular location.
2. An adventurer:
- An adventurer refers to a person who seeks out and engages in exciting or daring experiences, often in unexplored or remote areas.
- Unlike the other options, an adventurer is not a natural or geographical element but rather a human activity or occupation.
3. Scenery:
- Scenery refers to the natural features of a landscape, such as mountains, valleys, forests, or bodies of water, that collectively create a picturesque view.
- It can also include man-made elements like buildings or structures that enhance the beauty of the natural surroundings.
4. Countryside:
- Countryside refers to rural areas that are characterized by open fields, farmland, forests, and a lack of urban development.
- It is typically associated with a peaceful and natural environment, away from the hustle and bustle of cities.
Based on the analysis above, option B: An adventurer is the odd one out as it does not fit into the category of natural or geographical elements.

Ship is a means of
  • a)
    Land transport
  • b)
    Water transport
  • c)
    Air transport
  • d)
    Rail transport
Correct answer is option 'B'. Can you explain this answer?

Bhavya Bose answered
Ship is a means of Water transport

Ships are specifically designed to transport people, goods, and cargo across bodies of water such as oceans, seas, rivers, and lakes. They are an essential mode of transportation for international trade, tourism, and naval operations. Here are some key points explaining why ships are considered a means of water transport.

1. Definition of a ship:
- A ship is a large vessel that is buoyant and capable of floating on water.
- It is specifically designed for transport by water and can navigate through various water bodies.

2. Characteristics of ships:
- Ships are typically larger and more robust than other watercraft such as boats or canoes.
- They have a complex structure with multiple decks, cabins, and compartments to accommodate passengers, crew, and cargo.
- Ships are equipped with navigation systems, propulsion systems, and safety equipment to ensure efficient and safe travel.

3. Types of ships:
- There are various types of ships designed for different purposes. Some common types include cargo ships, passenger ships, container ships, cruise ships, and naval ships.
- Cargo ships are used to transport goods and commodities, while passenger ships are designed to carry people.
- Cruise ships are primarily used for leisure travel and provide luxurious amenities and entertainment options.

4. Advantages of ships:
- Ships have a high carrying capacity, allowing for the transportation of large quantities of goods and people.
- They are an economical mode of transport, especially for bulk cargo, as they can carry a significant amount of goods in a single journey.
- Ships can access remote areas and transport goods to landlocked regions through rivers and canals.

5. Importance of ships:
- Ships play a crucial role in international trade, facilitating the movement of goods between countries.
- They are also essential for tourism, providing luxurious cruises and travel experiences.
- Ships are used for military purposes, including naval defense, troop transport, and humanitarian missions.

In conclusion, ships are specifically designed for water transport and are an essential mode of transportation for the movement of goods, people, and military operations across bodies of water.

Soldiers travel under the water through
  • a)
    Steamers
  • b)
    Submarine
  • c)
    Boats
  • d)
    Ships.
Correct answer is option 'B'. Can you explain this answer?

Jatin Kumar answered
Submarine

Submarines are vessels that are specifically designed to travel under the water. They are equipped with technology that allows them to submerge and navigate underwater for extended periods of time.

How do submarines work?

  • Submarines are powered by electric batteries when submerged and by diesel engines when on the surface.
  • They have ballast tanks that can be filled with water to make the submarine heavier and dive underwater, and then emptied to make it lighter and rise back to the surface.
  • Submarines also have periscopes and sonar systems to help them navigate and communicate while underwater.


Role of submarines in the military

  • Submarines play a crucial role in naval warfare by being able to operate stealthily underwater, making them difficult to detect by enemy forces.
  • They can launch missiles, torpedoes, and conduct surveillance missions while submerged, providing a strategic advantage in combat situations.
  • Submarines are also used for intelligence gathering and reconnaissance missions in enemy territories.


Conclusion

In conclusion, submarines are essential for modern military operations, allowing soldiers to travel underwater for various missions and operations. Their advanced technology and stealth capabilities make them a valuable asset in naval warfare.

Select the odd one out.
  • a)
    Radio
  • b)
    Television
  • c)
    Telephone
  • d)
    Newspaper
Correct answer is option 'C'. Can you explain this answer?

Odd one out: Telephone

Explanation:
The odd one out in this group is the telephone.

Reasoning:
- Radio, television, and newspaper are all forms of communication media that provide information to the public.
- Radio: Radio is a device that allows for the transmission and reception of radio waves, which are used to broadcast audio content such as music, news, and talk shows. It is a common form of entertainment and information dissemination.
- Television: Television is a device that allows for the transmission and reception of visual and audio content. It provides a wide range of entertainment, news, and educational programs to the viewers.
- Newspaper: Newspaper is a printed publication that contains news, articles, advertisements, and other information. It is a traditional form of media that provides detailed and in-depth coverage of various topics.

However, telephone is different from the other options because:
- Telephone: Telephone is a device used for voice communication between two or more people over a distance. It allows for real-time conversation between individuals. Unlike the other options, the telephone is primarily used for personal communication rather than broadcasting information to the public.

Conclusion:
Therefore, the odd one out in this group is the telephone because it is a device for personal communication, while the other options are media forms used for broadcasting information to the public.

The telephone services which can be used within the country?
  • a)
    PCO
  • b)
    STD
  • c)
    ISD
  • d)
    Both (a) and (b)
Correct answer is option 'D'. Can you explain this answer?

Atharva Saini answered
Telephone services are an essential means of communication in our daily lives. Within a country, there are several types of telephone services available for use. The correct answer to this question is option 'D', which states that both (a) PCO and (b) STD services can be used within the country. Let's explore these services in detail.

1. PCO (Public Call Office) Services:
- PCO services are commonly found in public places like bus stations, railway stations, airports, and marketplaces.
- These services allow individuals to make local calls within the same city or town.
- PCOs are operated by service providers who provide public telephones for people to make calls by inserting coins or using prepaid cards.

2. STD (Subscriber Trunk Dialing) Services:
- STD services enable individuals to make long-distance calls within the country.
- These services are used for making calls to different cities or towns within the same country.
- STD calls are charged at different rates depending on the distance and duration of the call.
- To make an STD call, one needs to dial the STD code of the particular city or town followed by the recipient's telephone number.

3. ISD (International Subscriber Dialing) Services:
- ISD services allow individuals to make international calls to other countries.
- These services are used for making calls to people residing in other countries.
- ISD calls are charged at higher rates compared to local or STD calls.
- To make an ISD call, one needs to dial the international access code of the respective country, followed by the country code, area code, and the recipient's telephone number.

In conclusion, within a country, individuals can use both PCO and STD services for making local and long-distance calls, respectively. ISD services, on the other hand, are used to make international calls. These telephone services play a crucial role in connecting people and facilitating effective communication.

Which of these is NOT a special means of transport?
  • a)
    Ambulance
  • b)
    Autorickshaw
  • c)
    Fire engine
  • d)
    Postal van
Correct answer is option 'B'. Can you explain this answer?

An autorickshaw is a normal vehicle used by people to travel from one place to another, like a taxi. It is not a special means of transport.

Shalini wants to chat with her friend Seema. Shalini will chat through
  • a)
    Landline phone
  • b)
    Fax 
  • c)
    Cellular phone
  • d)
    Internet
Correct answer is option 'D'. Can you explain this answer?

Explanation:

To explain the answer, let's first understand the different communication options mentioned in the question.

Landline phone:
A landline phone is a traditional telephone that is connected to a physical line through the telephone network. It allows people to make and receive calls within a limited range.

Internet:
The internet is a global network of interconnected computers and devices that allows users to communicate, share information, and access various services. It provides a wide range of communication options, including email, instant messaging, video calls, and social media platforms.

Cellular phone:
A cellular phone, also known as a mobile phone or cell phone, is a portable device that uses wireless communication technology to make and receive calls, send messages, and access the internet. It operates through cellular networks and provides mobility and convenience.

Fax:
A fax machine is a device that transmits printed documents electronically over a telephone line. It converts the document into a digital image and sends it to another fax machine where it is printed out.

Now, let's analyze the given options:

Option A: Landline phone
Although a landline phone allows voice communication, it may not be the most suitable option for chatting with a friend. It lacks features like text messaging and multimedia sharing, which are commonly used in modern communication.

Option B: Internet
The internet is a versatile and widely-used communication medium that offers various options for chatting with friends. It provides platforms like email, instant messaging, and social media, which allow text-based conversations, voice calls, and even video calls. However, the question specifies that Shalini wants to chat, so the internet is a possible option but not the correct one mentioned in the answer.

Option C: Cellular phone
A cellular phone is a popular choice for personal communication. It provides features like text messaging, voice calls, and internet access, making it suitable for chatting with friends. Cellular phones are portable and convenient, allowing people to stay connected even when they are on the move.

Option D: Fax
Fax is not a suitable option for chatting with a friend. It is primarily used for transmitting documents, not for real-time conversation or personal communication. Fax machines are not designed for chatting purposes and lack the necessary features for it.

Therefore, based on the given options, the correct answer is option C: Cellular phone. It is the most suitable choice for Shalini to chat with her friend Seema, as it provides the necessary features and convenience for personal communication.

Which mode of communication can be used as audio and video both ways?
  • a)
    Telephone
  • b)
    Telegram
  • c)
    Traditional
  • d)
    Electronic
Correct answer is option 'A'. Can you explain this answer?

Understanding Communication Modes
Communication is essential in our daily lives, and different modes serve various purposes. Among the options provided, the most effective mode for both audio and video communication is the telephone.
Why the Telephone?
- Two-way Communication:
- Telephones allow for real-time conversations, enabling both parties to speak and listen simultaneously. This interactive feature is crucial for effective communication.
- Audio and Video Features:
- Modern telephones, especially smartphones, offer both voice calls and video calls. This dual functionality lets users see and hear each other, making conversations more engaging and personal.
- Accessibility:
- Telephones are widely available and easy to use, ensuring that people can connect regardless of their location, as long as they have a network connection.
Other Modes Explained
- Telegram:
- Primarily a messaging platform that focuses on text and images, lacking real-time audio and video communication capabilities.
- Traditional Communication:
- This includes methods like letters or face-to-face conversation, which may not provide the instant feedback that a telephone offers.
- Electronic Communication:
- While it encompasses many forms (like emails and instant messaging), it typically doesn't support real-time audio and video communication as effectively as telephones do.
Conclusion
In summary, option 'A', the telephone, stands out as the mode of communication that supports audio and video both ways, making it the best choice for interactive conversations.

Sledges are used as means of transport in
  • a)
    Land
  • b)
    Air
  • c)
    Snow
  • d)
    Desert
Correct answer is option 'C'. Can you explain this answer?

Arnav Nambiar answered
Explanation:

Snow:
Sledges are primarily used as a means of transport in snowy conditions. They are designed to glide smoothly over snow and ice, making them ideal for traversing snowy landscapes.

Construction:
Sledges are typically made of wood or metal, with a flat base that allows them to slide easily over the snow. They often have runners on the bottom to provide stability and control.

Usage:
Sledges are commonly used for recreational purposes, such as sledding down hills or racing in snow-covered fields. They can also be used for transportation in areas where other vehicles may not be able to navigate due to heavy snowfall.

Advantages:
- Sledges are lightweight and easy to maneuver, making them accessible to people of all ages.
- They do not require any fuel or electricity to operate, making them environmentally friendly.
- Sledges can be a fun and enjoyable way to travel in snowy conditions, providing a unique and exciting experience for riders.
In conclusion, sledges are primarily used as a means of transport in snow-covered areas, offering a simple yet effective way to travel across snowy landscapes.

Were dots raised on the rows on thick paper read by fingerprints?
  • a)
    Louis script
  • b)
    Marconi script
  • c)
    Braille script
  • d)
    Wright script
Correct answer is option 'C'. Can you explain this answer?

Arka Sharma answered
Explanation:

Braille script is the correct answer.

Braille is a system of raised dots that can be felt with the fingertips and is used by visually impaired people to read and write. It was invented by Louis Braille, a blind Frenchman, in the early 19th century.

Here is a detailed explanation of each option:

Louis script:
- Louis script is not a recognized script or writing system.
- It is not related to the use of raised dots on paper to be read by fingerprints.

Marconi script:
- Marconi script is also not a recognized script or writing system.
- It is unrelated to the use of raised dots on paper to be read by fingerprints.

Wright script:
- Wright script is not a recognized script or writing system.
- It is not associated with the use of raised dots on paper to be read by fingerprints.

Braille script:
- Braille script is a system of writing and reading for visually impaired individuals.
- It uses a pattern of raised dots, arranged in cells of up to six dots, to represent letters, numbers, and other symbols.
- The dots can be felt with the fingertips, allowing blind or visually impaired individuals to read by touch.
- The script was invented by Louis Braille in the early 19th century and has since become widely used worldwide.

In conclusion, the dots raised on thick paper read by fingerprints are associated with the Braille script, which is specifically designed for visually impaired individuals to read and write.

Which of the following carry both passengers and goods?
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'D'. Can you explain this answer?

Edu Impact answered
The correct option that carries both passengers and goods is option D. Let's break down the answer into headings and bullet points for clarity:
Option D:
- This option shows a train.
- Trains are a mode of transportation that can carry both passengers and goods.
- They have separate compartments for passengers and dedicated space for transporting goods.
- Passengers can travel in the passenger compartments, while goods can be loaded onto the train cars.
Options A, B, and C:
- Option A shows a car.
- Cars are primarily used for passenger transportation and may have limited space for carrying goods.
- Option B shows a truck.
- Trucks are primarily used for transporting goods and may have limited space for carrying passengers.
- Option C shows a bicycle.
- Bicycles are used for individual transportation and do not have the capacity to carry goods.
Therefore, the correct answer is option D, the train, as it is the only option that can carry both passengers and goods.

Newspaper is a means of
  • a)
    Audio communication
  • b)
    Mass communication
  • c)
    Telecommunication
  • d)
    Audio-Visual communication
Correct answer is option 'B'. Can you explain this answer?

Bhavya Bose answered
Newspaper is a means of Mass communication.

Mass communication refers to the process of transmitting information to a large audience through various media channels. It involves the dissemination of news, information, and entertainment to a wide range of people. Newspapers are one of the oldest and most traditional forms of mass communication.

Newspapers are printed publications that are typically published daily or weekly. They contain news articles, feature stories, editorials, advertisements, and other content that is relevant to the general public. Newspapers are distributed to a large number of readers, either through physical copies or digital platforms.

Newspapers serve as a vital source of information for people of all ages and backgrounds. They provide news about current events, politics, sports, entertainment, business, and other topics that are of interest to the public. Newspapers also play a crucial role in shaping public opinion and influencing social, political, and economic decisions.

Newspapers are widely accessible and reach a wide audience. They are available in different languages and cater to the needs and interests of diverse communities. People can read newspapers at their own convenience, whether it is in the morning with a cup of tea or during their commute to work.

Newspapers also have a unique ability to provide in-depth coverage and analysis of news stories. Unlike other forms of media, newspapers have the advantage of space and time to delve into complex issues and provide a comprehensive understanding of the subject matter. They often include interviews, expert opinions, and investigative reports that help readers gain a deeper insight into the news.

In conclusion, newspapers are a means of mass communication because they reach a large audience, provide timely and relevant information, and have the ability to influence public opinion. They are an integral part of our daily lives and play an essential role in keeping us informed about the world around us.

An ______ carries sick or injured people to hospital.
  • a)
    Fire engine
  • b)
    Jeep
  • c)
    Ambulance
  • d)
    Letter Van
Correct answer is option 'C'. Can you explain this answer?

Nikhil Verma answered

Explanation:

Ambulance:
An ambulance is a vehicle specially designed and equipped to transport sick or injured people to the hospital for medical treatment. It is typically staffed with trained medical professionals to provide care during transport.

Role of an Ambulance:
- Ambulances play a critical role in the healthcare system by ensuring that individuals in need of urgent medical attention can be quickly and safely transported to a medical facility.
- They are equipped with medical supplies and equipment to stabilize patients and provide emergency treatment en route to the hospital.
- Ambulance drivers are trained to navigate through traffic and respond to emergency situations quickly and efficiently.

Importance of Ambulances:
- Ambulances help reduce response times during medical emergencies, which can be crucial in saving lives.
- They provide a safe and controlled environment for patients who require medical attention while being transported.
- Ambulances are a vital part of the emergency medical services (EMS) system, working in conjunction with hospitals and other healthcare providers to ensure timely and effective care for patients.

In conclusion, ambulances are essential vehicles that play a critical role in providing emergency medical care and transportation to individuals in need. They are equipped to handle a variety of medical situations and are staffed with trained professionals to ensure the best possible outcome for patients.

Select the odd one out:
  • a)
    The accelerator
  • b)
    The clutch
  • c)
    The throttle
  • d)
    The trunk
Correct answer is option 'D'. Can you explain this answer?

Saikat Kapoor answered
The Odd One Out:
The odd one out in this list is option 'D', which is the trunk.

Explanation:
Here is the breakdown of each option and why it is related or unrelated to the others:

The Accelerator:
- The accelerator is a pedal located on the right side of the driver's footwell in a car.
- When the accelerator pedal is pressed, it controls the flow of fuel to the engine, increasing the speed of the vehicle.
- The accelerator is an essential component for controlling the speed of a car.

The Clutch:
- The clutch is a pedal located on the left side of the driver's footwell in a manual transmission car.
- It is used to engage and disengage the power transmission between the engine and the gearbox.
- Pressing the clutch pedal allows the driver to change gears smoothly without causing damage to the transmission.

The Throttle:
- The throttle is a mechanism that controls the flow of air and fuel into the engine.
- It is usually controlled by the accelerator pedal in modern cars.
- By adjusting the throttle, the driver can regulate the engine's power output and speed.

The Trunk:
- The trunk, also known as the boot in some countries, is a storage space at the rear of a car.
- It is used to store luggage, groceries, or any other items that need to be transported.
- The trunk is not directly related to the operation or control of the car but provides storage convenience.

Summary:
The odd one out in this list is the trunk because it is not directly related to the operation or control of the car, unlike the accelerator, clutch, and throttle, which are essential components for controlling the speed and power of the vehicle.

Select the odd one out from the following.
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'B'. Can you explain this answer?

Rahul Verma answered
Car, Auto Rickshaw, Buses are the means of transport by which people travel from one place to another. Tractor is used for agriculture purposes.

The cheapest means of transport for long distance traveling is __________.
  • a)
    train
  • b)
    aeroplane
  • c)
    car
  • d)
    none of these
Correct answer is option 'A'. Can you explain this answer?

Kds Coaching answered
The cheapest means of transport for long-distance travel is usually a train. Trains are more affordable compared to airplanes or cars when traveling over long distances, as they can carry many passengers at once.
  • Aeroplane: Expensive, especially for long distances.
  • Car: While convenient, it can be costly for long-distance travel due to fuel and maintenance costs.
So, the correct answer is Option A: Train.

Aeroplanes use airports. What do ships use?
  • a)
    Parking lots
  • b)
    Harbours
  • c)
    Bus stands
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Kds Coaching answered
A harbour is a place where ships can dock, unload, or load goods and passengers.
Just like aeroplanes use airports to land and take off, ships use harbours.

The place where ships load or unload goods is called:
  • a)
    Harbour
  • b)
    Runway
  • c)
    Platform
  • d)
    Both A and B
Correct answer is option 'A'. Can you explain this answer?

The place where ships load or unload goods is called a harbor. Here is a detailed explanation:
Definition:
- A harbor is a sheltered body of water where ships can anchor safely to load or unload goods.
- It provides a protected area where ships can find refuge from rough weather conditions.
Characteristics of a Harbor:
- A harbor is typically located along a coastline or at the mouth of a river.
- It is usually deep enough to accommodate large ships.
- Harbors may have breakwaters or piers to provide additional protection from waves and currents.
- They are equipped with facilities such as docks, cranes, and warehouses for efficient loading and unloading of cargo.
Functions of a Harbor:
- Harbors serve as important transportation hubs for international trade.
- They facilitate the movement of goods between ships and land-based transportation systems such as trucks and trains.
- Harbors can also provide services such as ship repair and maintenance, fueling, and customs clearance.
Examples of Famous Harbors:
- The Port of Singapore is one of the busiest and most important harbors in the world.
- The Port of Rotterdam in the Netherlands is Europe's largest harbor.
- The Port of Shanghai in China is the world's busiest container port.
In conclusion, a harbor is the designated area where ships load or unload goods safely. It plays a crucial role in facilitating global trade and transportation.

Which of the following tickets is the air ticket?
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'A'. Can you explain this answer?

Riya Singh answered
Analysis:
To determine which ticket is the air ticket, we need to carefully examine each option and consider the characteristics of an air ticket.
Option A:
- The ticket shows a clear image of an airplane, indicating that it is likely an air ticket.
- The text on the ticket includes information such as the flight number, departure and arrival times, and the airline name, which are typically found on an air ticket.
Option B:
- The ticket shows a picture of a train, suggesting that it is a train ticket rather than an air ticket.
Option C:
- The ticket displays a picture of a bus, indicating that it is a bus ticket and not an air ticket.
Option D:
- The ticket shows a picture of a cruise ship, suggesting that it is a cruise ticket rather than an air ticket.
Conclusion:
Based on the analysis, Option A is most likely the air ticket as it displays an image of an airplane and includes relevant flight information. Therefore, the correct answer is A.

________________ is the fastest way to send a message.
  • a)
    Speed post
  • b)
    Telegram
  • c)
    Email
  • d)
    Postcard
Correct answer is option 'C'. Can you explain this answer?

Kds Coaching answered
Email is the fastest way to send a message. You can send it almost instantly over the internet to anyone, anywhere in the world.
  • Speed post: Takes more time than email to deliver.
  • Telegram: Faster than regular mail, but not as quick as email.
  • Postcard: Very slow and takes days to deliver.
So, the correct answer is Option C: Email.

Select the odd one out.
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'C'. Can you explain this answer?

Amit Khanna answered
Bus, Auto Rickshaw and Truck move on road but ship is a means of water transport.

Camel is used for transportation in:
  • a)
    Desert
  • b)
    River
  • c)
    Mountain
  • d)
    Snow
Correct answer is option 'A'. Can you explain this answer?

Camel is used for transportation in:
A. Desert:
- Camels are well-adapted to desert environments due to their ability to withstand extreme heat and scarcity of water.
- Their wide, padded feet help them walk on sand without sinking.
- Camels can carry heavy loads and travel long distances across vast desert landscapes.
- They are commonly used by nomadic tribes and in tourist excursions for transportation purposes in deserts.
B. River:
- Camels are not typically used for transportation in rivers or water bodies.
- Their body structure and feet are not designed for swimming or traversing through water.
C. Mountain:
- Camels are not commonly used for transportation in mountainous regions.
- Their body structure and feet are not well-suited for climbing steep slopes or navigating rugged terrains.
D. Snow:
- Camels are not suitable for transportation in snow-covered areas.
- Their bodies are adapted to desert environments and are not equipped to handle cold temperatures and icy conditions.
In conclusion, the correct answer is A. Desert, as camels are primarily used for transportation in desert regions due to their unique adaptations and capabilities in such harsh environments.

Which of the following is an incorrect match in terms of compatibility of communication?
  • a)
    Villager-Relatives-Letter
  • b)
    Mother-Daughter-E-mail
  • c)
    Boss-Employee-Telephone
  • d)
    Both B and C
Correct answer is option 'D'. Can you explain this answer?

Tanvi Sharma answered
Incorrect match in terms of compatibility of communication

The correct answer is option "D" - Both B and C.

Explanation:

Compatibility of communication refers to the suitability or appropriateness of a particular communication method or medium for a specific relationship or situation. In this question, we are given different pairs of individuals and their corresponding modes of communication. We need to identify the incorrect match in terms of compatibility.

Let's examine each option to determine the correctness of the match:

a) Villager - Relatives - Letter:
This match seems appropriate as villagers may not have access to advanced technology or electronic communication devices. Therefore, sending a letter to communicate with their relatives is a plausible and suitable method for them.

b) Mother - Daughter - E-mail:
This match also seems correct as email is a commonly used form of communication between family members, including mothers and daughters. It allows for quick and convenient communication, especially when they are not physically present with each other.

c) Boss - Employee - Telephone:
This match is also appropriate as telephone communication is commonly used in a professional setting. It allows for immediate and direct communication between a boss and an employee, enabling them to discuss work-related matters efficiently.

d) Both B and C:
This is the incorrect match. The statement suggests that both the mother-daughter pair using email and the boss-employee pair using the telephone are not compatible modes of communication. However, there is no inherent incompatibility between these pairs and their chosen communication methods. Both email and telephone are commonly used and acceptable means of communication in these relationships.

Therefore, the correct answer is option "D" - Both B and C.

Air hostess profession is related to:
  • a)
    Water transport
  • b)
    Road transport
  • c)
    Air transport
  • d)
    Train transport
Correct answer is option 'C'. Can you explain this answer?

Akash Tiwari answered
Air Hostess Profession is related to Air Transport.
Air hostess profession is related to air transport. Air hostesses are primarily employed by airlines to ensure the safety, comfort, and well-being of passengers during flights. They play a crucial role in delivering excellent customer service and maintaining a positive experience for passengers.
Here are some key points to understand the relationship between the air hostess profession and air transport:
1. Job Responsibilities:
- Air hostesses are responsible for checking passengers' tickets and guiding them to their seats.
- They provide safety instructions and demonstrate the use of emergency equipment.
- They assist passengers with their luggage and ensure it is stored properly.
- Air hostesses serve meals, snacks, and beverages to passengers during the flight.
- They attend to passengers' requests and address any concerns or issues they may have.
- They maintain a calm and composed demeanor during emergencies and assist in evacuations if necessary.
2. Training and Qualifications:
- Air hostesses undergo rigorous training that includes customer service, safety procedures, first aid, and emergency evacuations.
- They are trained to handle various situations onboard, including medical emergencies, disruptive passengers, and aircraft malfunctions.
- They must possess excellent communication skills, language proficiency, and the ability to remain calm under pressure.
3. Working Environment:
- Air hostesses work on commercial airplanes, both domestic and international flights.
- They work in a team with other cabin crew members, including flight attendants and purser.
- Air hostesses often have to deal with different time zones, long working hours, and irregular shift patterns.
- They must adhere to strict grooming standards and maintain a professional appearance at all times.
In conclusion, the air hostess profession is closely related to air transport as they are an integral part of the airline industry. Their main role is to ensure the safety, comfort, and satisfaction of passengers during flights.

Choose the correct statement:
  • a)
    Communication is a one-way process
  • b)
    Communication is a two-way process
  • c)
    Communication is a multi-way process
  • d)
    Animals do not communicate
Correct answer is option 'B'. Can you explain this answer?

Tanvi Sharma answered
Communication is a one-way process

Definition of Communication
Communication is the process of exchanging information, ideas, thoughts, and feelings between two or more people. It is a vital part of human interaction, and it helps to build relationships and foster understanding between individuals.

One-way vs. Two-way Communication
Communication can be categorized as either one-way or two-way. In one-way communication, the message flows from the sender to the receiver without any feedback or response from the receiver. This type of communication is often used in situations where the sender needs to inform the receiver about something, and there is no need for a response.

On the other hand, two-way communication involves a back-and-forth exchange of messages between the sender and the receiver. This type of communication is more interactive and allows for feedback from the receiver. Two-way communication is often used in situations where there is a need for discussion, collaboration, or negotiation.

Why Communication is a One-way Process?
Based on the definition and the two types of communication, it is clear that communication is not a multi-way process as mentioned in option C. It is also not correct to say that animals do not communicate, as they do communicate through various means. Therefore, the correct statement is option B, which states that communication is a one-way process. This is because communication can sometimes involve the transmission of information from a sender to a receiver without any feedback or response from the receiver. Examples of one-way communication include speeches, lectures, and announcements.

Conclusion
In conclusion, communication is an essential part of human interaction, and it can be categorized as either one-way or two-way. While two-way communication is more interactive and allows for feedback from the receiver, one-way communication is sometimes necessary to inform or announce something without any response needed from the receiver. Therefore, the correct statement is that communication is a one-way process.

Select an appliance of mass communication among the following.
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'D'. Can you explain this answer?

Rahul Verma answered
Fax machine and Mobile are the sources of telecommunication. Postal communication is postcard. Newspapers are the means of mass communication.

Which of the following does not need fuel to work?
  • a)
    Car
  • b)
    Aeroplane
  • c)
    Bicycle
  • d)
    Motorbike
Correct answer is option 'C'. Can you explain this answer?

Glitz Classes answered
The following solution explains why certain objects require fuel:
  • Car, aeroplane, and motorbike all need fuel to operate. They use engines that convert fuel into energy to move.
  • A bicycle does not need fuel. It operates manually through pedalling, which converts human effort into motion.

The train route distance from Kerala to Goa is:
  • a)
    531 km
  • b)
    850 miles
  • c)
    850 km
  • d)
    580 km
Correct answer is option 'C'. Can you explain this answer?

Bhavya Chauhan answered
The correct answer is option 'C', which states that the train route distance from Kerala to Goa is 850 km. Let's explore why this is the correct answer.

1. Train Route:
- Kerala and Goa are two states located in southern India.
- Several train routes connect these two states, providing convenient transportation options for travelers.

2. Distance Calculation:
- The distance between Kerala and Goa can be calculated by measuring the straight-line distance or the actual distance covered by the train route.
- In this case, the question asks for the train route distance, which means we need to consider the actual distance covered by the train.

3. Actual Distance:
- The actual distance between Kerala and Goa depends on the specific train route chosen.
- However, based on commonly used train routes, the approximate distance between the two states is 850 km.
- This distance may vary slightly depending on the starting and ending points within Kerala and Goa.

4. Importance of the Correct Answer:
- Knowing the correct train route distance is essential for planning a journey.
- It helps travelers estimate the travel time, make necessary arrangements, and prepare accordingly.

In conclusion, the train route distance from Kerala to Goa is approximately 850 km. It is crucial to have accurate information about the distance to plan a comfortable and efficient journey.

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