NVS TGT Science Mock Test - 5 - NVS TGT/PGT MCQ

Invented in 1760.

A list of Benjamin Franklin's inventions reveals a man of many talents and interests. It was the scientist in Ben that brought out the inventor. His natural curiosity about things and the way they work made him try to find ways to make them work better.

Ben had poor vision and needed glasses to read. He got tired of constantly taking them off and putting them back on, so he decided to figure out a way to make his glasses let him see both near and far. He had two pairs of spectacles cut in half and put half of each lens in a single frame. Today, we call them bifocals.

Puneet Vidyarthi has been appointed as the President of the Rural Marketing Association of India (RMAI) for the term 2023-2025, succeeding Biswabaran Chakrabarti.

The first wireless remote control for television was called Flashmatic. (Remember when you had to get up to change the channel?)

From Statement I:

From this statement, we get that Madhavi joined the office on 5th, 6th, 7th, 8th or 9th November.

Clearly, data in statement I alone is not sufficient to answer the question.

From Statement II:

From this statement, we get that Madhavi joined the office on 8th, 9th, 10th or 11th November.

Clearly, data in statement II alone is not sufficient to answer the question.

Checking both Statement, I and II together:

We can say that Madhavi joined the office either on 8th or 9th November.

Clearly, data in both the statements I and II together is not sufficient to answer question.

Hence, option D is the correct answer.

From the common explanation, we get C sits opposite to F.

Hence, Option C is correct.

Common Explanation:

References:

One person sits between A and C, who sits second to the right of H.

G sits opposite to B.

Both G and B do not sit immediate left of H.

Inferences:

From the above reference, we get two different cases:

References:

D sits second to the left of B.

A doesn’t sit beside D.

E doesn’t face C.

Inferences:

From the above reference, case 1 will be eliminated because A doesn’t sit beside of D.

So, the final arrangement:

Spreadsheet program
A spreadsheet program is a computer program that organizes data in rows and columns of cells. It is commonly used to perform calculations, analyze data, and create charts or graphs. In the context of keeping a record of the money earned from mowing lawns over the summer, a spreadsheet program would be the most suitable choice. Here's why:
- Organizes data in rows and columns: A spreadsheet program allows you to input and organize data in a tabular format, with rows representing individual records and columns representing different attributes or variables. This structure is ideal for keeping track of earnings, dates, and other relevant information related to lawn mowing jobs.
- Performs calculations: Spreadsheet programs have built-in formula functions that enable you to perform calculations and manipulate data. For example, you can easily calculate the total earnings for the summer by summing up the amounts from the respective cells.
- Provides data analysis tools: With a spreadsheet program, you can analyze your earnings data by using functions like averages, sorting, filtering, and creating charts or graphs. This allows you to gain insights and visualize trends or patterns in your lawn mowing business.
- User-friendly interface: Spreadsheet programs typically have a user-friendly interface that allows you to easily input, edit, and navigate through data. You can format cells, apply conditional formatting, and customize the appearance of your spreadsheet to make it more visually appealing and organized.
- Data storage and retrieval: Spreadsheet programs provide a convenient way to store and retrieve data. You can save your spreadsheet as a file on your computer or in the cloud, ensuring that your records are easily accessible and can be updated as needed.
In conclusion, a spreadsheet program is the most suitable choice for organizing and managing the data related to your lawn mowing earnings. It offers the necessary features and functionality for efficient record-keeping, calculations, analysis, and data storage.

Real-time systems
Real-time systems are designed to respond to events and process data in a time-critical manner. They are used in various industries and applications where timely response and accuracy are crucial. Here are the details explaining the characteristics and uses of real-time systems:
1. Used for monitoring events as they occur:
Real-time systems are primarily used for monitoring and controlling events that happen in real-time. These systems continuously interact with the environment and respond to events as they occur without any significant delay.
2. Time-sensitive:
Real-time systems have strict deadlines and must complete tasks within specific time constraints. They are designed to handle time-critical operations and ensure timely responses to events.
3. Used in diverse applications:
Real-time systems find applications in various domains such as aerospace, defense, healthcare, transportation, industrial automation, and communication systems. They are used in scenarios where immediate actions are required based on real-time data.
4. Embedded systems:
Real-time systems are often embedded within other devices or systems, such as sensors, control systems, or hardware components. These embedded systems provide real-time capabilities to the overall system.
5. Concurrency and parallelism:
Real-time systems often involve concurrent and parallel processing to handle multiple tasks simultaneously. They utilize techniques like multitasking, multithreading, and multiprocessing to achieve efficient execution of tasks.
6. Deterministic behavior:
Real-time systems exhibit deterministic behavior, meaning that their response time and execution time are predictable and consistent. This predictability is crucial in time-critical applications.
7. Continuous monitoring and feedback:
Real-time systems continuously monitor the environment and provide feedback or take actions based on the data received. They constantly update their state and respond to changes promptly.
In conclusion, real-time systems are used for monitoring events as they occur, processing data in a time-critical manner, and ensuring timely responses. These systems find applications in various industries and rely on concurrency, determinism, and continuous monitoring to achieve their objectives.

Objective questions are beneficial to assess the knowledge of the complete syllabus in short time. Maximum syllabus can be covered by making objective type questions. Hence, this is the ideal way to assess whether the child has prepared entire syllabus or not.

Latent heat of fusion is the amount of heat energy required to change 1 kg of solid into liquid state without any change in temperature, at its melting point.

From ohm’s law, I = V/R = 220/440 = 0.5 A

H = I² × R × t = (0.5)² × 440 × 10 = 1100 J

According to Newton's 3^rd law of motion, " Every action has an equal and opposite reaction ".  So if we have to push the arrow in forward direction, we will pull the bow string in backward direction.

The maximum number of electrons present in a shell = 2n2

 

Where n = shell number

Value of n for K shell = 1

Therefore, Maximum number of electrons in K shell = 2n2 = 2(1) = 2

Value of n for L shell = 2

Therefore, Maximum number of electrons in L shell = 2(2)2 = 8

Thus, total no. of electrons = 2 + 8 = 10

When iron and sulphur are heated at high temperature:
- Black coloured FeS is formed: When iron and sulphur are heated at high temperature, they react to form iron sulphide (FeS) which is black in color. This reaction is a synthesis reaction where iron and sulphur combine to form a new compound.
- Mixture of iron and sulphur is obtained: This statement is incorrect. Heating iron and sulphur at high temperature does not result in a simple mixture of iron and sulphur. Instead, a chemical reaction takes place and a new compound, iron sulphide, is formed.
- Yellow coloured iron sulphide is formed: This statement is incorrect. Iron sulphide (FeS) formed from the reaction of iron and sulphur is black in color, not yellow.
- They do not heat: This statement is incorrect. Iron and sulphur can be heated at high temperatures to initiate a chemical reaction between them.
Therefore, the correct answer is option A: Black coloured FeS is formed.

Tooth decay typically occurs when the pH of the environment surrounding the teeth drops to 5.5 or lower. In this acidic environment, the demineralization of tooth enamel can occur, leading to the formation of cavities and other dental issues. Maintaining proper oral hygiene and dietary habits is crucial for preventing tooth decay.

Most prokaryotes contain one circular chromosome. DNA communicateswith the cytoplasm- so it allows direct connection to the transcription and translation. Contain only one copy of the gene. Non essential genes are stored outside of chromosome - in Plasmids.

Activity-based learning as the name suggests actively involves learners in the construction and re-construction of knowledge based on his or her individual experiences. The activity approach takes you a little more time to prepare than a lecture or a demonstration. But the activity approach will not add to your burden.

Important Points

• The classroom seems creative as the teacher is giving opportunities to students to ask doubts and also to explore the answers which mean Rahul wants his students to be creative and think about the problem.
• This would make them creative and help in developing a scientific attitude as well as scientific temper.
• We cannot say that the teacher is engaged in the irrelevant activity or the students are passing time as these are the parts of the teaching-learning program.

Key Points

In the activity-based approach, we consider the following assumptions-

• Pupils have different learning styles (that instruction should accommodate)
• Children’s innate curiosity and self-perpetuating exploratory behavior should form the basis of their learning in school.
• They should have the opportunity to pursue their interests as deeply and as long as they find the pursuit satisfying.
• The individual child often learn in unpredictable ways (and instruction should accommodate such eventualities)
• Children are capable of making intelligent decisions in significant areas of their own learning.
• The function of the school is to help children develop learning to learn in order to become lifelong learners.
• Children have adopted the skill of questioning by discussing among them.
• Learning is facilitated by the relationship of openness, trust, and mutual respect; and school should provide an accepting and warm emotional climate.

Hence, we can conclude that the classroom activity is creative.

Oxygen is a by-product of photosynthesis in plants. Unlike urea and uric acid, which are nitrogenous wastes in animals, oxygen is considered a waste product of the photosynthesis process in plants.

The fertilization of the human egg by the sperm takes place in the oviduct, specifically in the ampulla region of the fallopian tube.

The first controlled fission of an atom was carried out in Germany in 1938. Nuclear fission is the splitting of the nucleus of the atom.

Enzymes in our body are specific in their action and can only break down certain substances. This specificity is why we cannot obtain energy from non-digestible substances like coal. Enzymes play a crucial role in the digestion process by breaking down complex molecules into simpler forms that our bodies can absorb and utilize for energy.

It is so because it is present in epithelial tissue just under the epithelium and if it would not be present then there would be no one to anchor down the epithelium and also there would be absence of mechanical barrier.

Correct option is B)

• The plant cell can do respiration and photosynthesis.
• The plants get energy through the process of respiration in which glucose food breaks down in the presence of oxygen to form carbon dioxide and water with the release of energy.
• In plants, photosynthesis takes place in the cell organelle called chloroplast. A plant cell cannot breathe because in a plant body lungs are absent.

So the correct answer is 'Respiration and photosynthesis'.

The word Elevation (Noun) means to increase in the level of something.
The word Depression (Noun) means: the state of feeling very sad and without hope; part of a surface; that is lower than the parts around it. 

Let us first learn the meanings of the given words:

Outbreak (noun): a sudden occurrence of something unwelcome, such as war or disease.

Explode (verb): arise or develop suddenly.

Eruption (noun): the act of starting suddenly and violently.

Commencement (noun): the beginning of something.

Inception (noun): the establishment or starting point of an institution or activity.

The use of ‘commencement’ and ‘inception’ is contextually absurd while verb ‘explode’ is also wrong as we need only a noun after ‘weather’. Now, between ‘eruption’ and ‘outbreak’, ‘weather outbreak’ makes an apt noun phrase as per the context. Thus, ‘outbreak’ is a better choice.

Hence, option A is correct.

सरकारी शब्द के निर्माण में उपसर्ग का प्रयोग नहीं हुआ है।
'सरकार + ई = सरकारी' इसमें किसी उपसर्ग का प्रयोग नही हुआ है।Key Points

• उपसर्ग - वे शब्द जो किसी अन्य शब्द के प्रारंभ में लगकर उसका अर्थ बदल देते है।
• उदाहरण - हम + दर्दी, खुश + बू, बद + नाम , अध् + खिला आदि।

Additional Information

Mistake Points

• खुशबू शब्द उर्दू उपसर्ग से निर्मित है

यहाँ मीठा केले की विशेषता है.

सही उत्तर सदाचार है।

Key Points

• सदाचार 'स' उपसर्ग से निर्मित शब्द नही है।
• ‘सदाचार’ शब्द में “सत्” उपसर्ग है।
• “आचार” मूल शब्द है = सत्+आचार - सदाचार
• उपसर्ग की परिभाषा- जो शब्दांश शब्दों के पूर्व अर्थात पहले जुड़कर उनके अर्थ में कुछ विशेषता लाते हैं, वे उपसर्ग कहलाते हैं |
• जैसे – प्र (प्रबल) परा (पराजय) सम् (संचय) इत्यादि |

Additional Information

 

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