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All questions of Class 7 for UPSC CSE Exam
Which one is an herbivorous organism?- a)Cow
- b)Tiger
- c)Crow
- d)Dog
Correct answer is option 'A'. Can you explain this answer?
Which one is an herbivorous organism?
a)
Cow
b)
Tiger
c)
Crow
d)
Dog
|
Akanksha Yadav answered |
The organisms that feed on only plant or plant part are called herbivores. Cow is an herbivores organism.
Amoeba obtain the food using finger-like projection calledA: PseudopodiaB: SpiraclesC: DiaphragmD: MouthCorrect answer is 'A'. Can you explain this answer?
Amoeba obtain the food using finger-like projection called
A: Pseudopodia
B: Spiracles
C: Diaphragm
D: Mouth
Correct answer is 'A'. Can you explain this answer?
|
Abhay Menon answered |
The finger-like projections are called “pseudopodia“. They not only help in engulfing food molecules but also help the organism in movement.
Which one of the following is not an example of natural fibre?
- a)Rayon
- b)Cotton
- c)Wool
- d)Silk
Correct answer is option 'A'. Can you explain this answer?
Which one of the following is not an example of natural fibre?
a)
Rayon
b)
Cotton
c)
Wool
d)
Silk
|
Rithika Roy answered |
Silk, cotton and wood are obtained from natural sources either plant or animal but rayon is a synthetic fibre.
Animals which eat the flesh of other animals are called- a)Carnivores
- b)Insectivores
- c)Herbivores
- d)Omnivores
Correct answer is option 'A'. Can you explain this answer?
Animals which eat the flesh of other animals are called
a)
Carnivores
b)
Insectivores
c)
Herbivores
d)
Omnivores
|
Anoushka Bajaj answered |
The animals which eat the flesh of other animals are called carnivores. Tiger, lion etc are example of carnivorous animals.
Q.Silkworms feeds on leaves ofa)Guavab)Mulberryc)Bananad)MangoCorrect answer is option 'B'. Can you explain this answer?
|
Kavya Rane answered |
Silkworms can ONLY survive on mulberry leaves (genus Morus), sometimes Osage orange (Maclura pomifera) or silkworm food, which is made from mulberry leaves. Your worms may eat other types of vegetation, such as lettuce leaves, but it will kill them.
Acid turns blue litmusA: OrangeB: PinkC: greenD: RedCorrect answer is 'D'. Can you explain this answer?
Acid turns blue litmus
A: Orange
B: Pink
C: green
D: Red
|
Jithin Chawla answered |
Acids turn blue litmus red. Litmus paper is used as indicator to check acids and bases.
Select the correct match- a)Natural fibre – cotton
- b)Synthetic fibre – silk
- c)Animal fibre – jute
- d)Plant fibre – wool
Correct answer is option 'A'. Can you explain this answer?
Select the correct match
a)
Natural fibre – cotton
b)
Synthetic fibre – silk
c)
Animal fibre – jute
d)
Plant fibre – wool
|
Vikram Kapoor answered |
- Cotton is a natural fibre.
- Wool is not a plant fibre.
- Jute is a plant fibre.
- Silk is a fibre obtained from cocoons of insects and is a natural fibre.
The heat in metals is conducted by the process ofA:AbsorptionB:RadiationC:ConvectionD:ConductionThe answer is D. Can you explain this?
|
Anand Choudhury answered |
The heat in metals is conducted by the process of conduction in which molecules in contact transfer heat to adjacent molecules.
Conduction takes place best ina) Gases b) All of the above.c) Liquid d) None of theseCorrect answer is option 'D'. Can you explain this answer?
|
Nishanth Ghosh answered |
Conduction takes place in solids, liquids and gases, but works best in solids as their atoms/molecules are located closer together. Metals are the best solids for conducting heat. Metals have tightly packed atoms which can easily pass on their kinetic energy and also have free moving electrons. These electrons can move from the hot part of the metal to the colder part transferring the energy more quickly.
Second most widely used fibre after cotton amongst the given options is:
- a)Wool
- b)Jute
- c)Coir
- d)Flax
Correct answer is option 'B'. Can you explain this answer?
Second most widely used fibre after cotton amongst the given options is:
a)
Wool
b)
Jute
c)
Coir
d)
Flax
|
Aruna Singh answered |
The answer is b.Jute is the cheapest natural fibre and is a second most widely used fibre after cotton.
Which of the following is a natural indicator- a)Turmeric
- b)Methyl orange
- c)Oxalic acid.
- d)Phenolphthalein
Correct answer is option 'A'. Can you explain this answer?
Which of the following is a natural indicator
a)
Turmeric
b)
Methyl orange
c)
Oxalic acid.
d)
Phenolphthalein
|
Sanjana Kumar answered |
Some of the natural indicators are red cabbage juice, onion paste, turmeric, lemon juice etc. Natural indicators are turmric,litmus,china rose etc are some natural indicators. Some Natural Indicators are red Cabbage juice,turmeric,china rose[hibiscus] and litmus.
First man-made synthetic fibre isa)Cottonb)Nylonc)Rayond)PolyesterCorrect answer is option 'B'. Can you explain this answer?
|
|
Vibhor Goyal answered |
- Rayon is an artificial fibre, but not truly synthetic, being made from wood.
- Nylon, the first synthetic fibre in the "fully synthetic" sense of that term, was developed by Wallace Carothers, an American researcher at the chemical firm DuPont in the 1930s.
A key tool for making clothes is- a)Loom
- b)Sewing needle
- c)Sewing machine
- d)Charkha
Correct answer is option 'B'. Can you explain this answer?
A key tool for making clothes is
a)
Loom
b)
Sewing needle
c)
Sewing machine
d)
Charkha
|
Ishan Choudhury answered |
Sewing needle is a key tool for making clothes of all kinds either by machine or hands.
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Physical and Chemical Changes, Class 7, Science. You can practice these practice quizzes as per your speed and improvise the topic. Q.Melting of ice is a- a)Both physical and chemical change
- b)Chemical change
- c)Periodic change
- d)Physical change
Correct answer is 'D'. Can you explain this answer?
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Physical and Chemical Changes, Class 7, Science. You can practice these practice quizzes as per your speed and improvise the topic.
Q.
Melting of ice is a
a)
Both physical and chemical change
b)
Chemical change
c)
Periodic change
d)
Physical change
|
Pooja Dahag answered |
D]
Angora goats are found in- a)Delhi and U.P
- b)Jammu and Kashmir
- c)Punjab and Goa
- d)Arunachal Pradesh and Karnataka
Correct answer is 'B'. Can you explain this answer?
Angora goats are found in
a)
Delhi and U.P
b)
Jammu and Kashmir
c)
Punjab and Goa
d)
Arunachal Pradesh and Karnataka
|
Kaavya Menon answered |
Angora goats are found in Jammu and Kashmir as they require low temperature for proper growth and reproduction.
Ventilation in room is due to- a)Conduction
- b)Radiation
- c)Convection
- d)Both radiation and conduction
Correct answer is 'C'. Can you explain this answer?
Ventilation in room is due to
a)
Conduction
b)
Radiation
c)
Convection
d)
Both radiation and conduction
|
Anagha Choudhury answered |
Ventilation is extremely necessary as it circulates air in the house. In this process, convection has the major role, which takes place only in liquids and gases.
There is a constant supply of fresh air and this removes the air present before. If there was no ventilation then the room might stink and there can be a feeling of stuffiness. In the room when air is hot its density decreases and rises up. So ventilators help to move out hot air from the room and lower its temperature.
Silk thread is obtained from- a)Cocoon
- b)Caterpillar
- c)Pupa
- d)Adult moth
Correct answer is option 'A'. Can you explain this answer?
Silk thread is obtained from
a)
Cocoon
b)
Caterpillar
c)
Pupa
d)
Adult moth
|
Meera Reddy answered |
The protein fiber of silk is composed mainly of fibroin and is produced by certain insect larvae to form cocoons. The best-known silk is obtained from the cocoons of the larvae of the mulberry silkworm Bombyx mori reared in captivity (sericulture).
A device which prevents or allow the current to flow through it- a)Motor
- b)Terminal
- c)Conductor
- d)Switch
Correct answer is option 'D'. Can you explain this answer?
A device which prevents or allow the current to flow through it
a)
Motor
b)
Terminal
c)
Conductor
d)
Switch
|
Rohini Seth answered |
A circuit breaker can be used over and over again. The basic circuit breaker consists of a simple switch, connected to an electromagnet.
Generally electrical current requires a close path or circuit to flow, so when switch is off it won't flow. A switch prevents or allow the current to flow through it.
Early man wears- a)Clothes manufactured in mills
- b)Unstitched clothes
- c)Clothes made by hands
- d)Tree barks, leaves and animals skin
Correct answer is 'D'. Can you explain this answer?
Early man wears
a)
Clothes manufactured in mills
b)
Unstitched clothes
c)
Clothes made by hands
d)
Tree barks, leaves and animals skin
|
Simran Deshpande answered |
Early man wears tree barks, leaves and animals skin to hide their body to overcome hot and cold condition.
In insects, air enters the body through
- a)Spiracles
- b)Gills
- c)Lungs
- d)Skin
Correct answer is option 'A'. Can you explain this answer?
In insects, air enters the body through
a)
Spiracles
b)
Gills
c)
Lungs
d)
Skin
|
Maitri Sarkar answered |
Insect bodies have openings, called spiracles, along the thorax and abdomen. These openings connect to the tubular network, allowing oxygen to pass into the body, regulating the diffusion of CO2 and water vapor.
Inhalation is the
- a)Release of oxygen
- b)Intake of carbon dioxide
- c)Intake of oxygen
- d)Release of carbon dioxide
Correct answer is option 'C'. Can you explain this answer?
Inhalation is the
a)
Release of oxygen
b)
Intake of carbon dioxide
c)
Intake of oxygen
d)
Release of carbon dioxide
|
Prateek Sharma answered |
The part of breathing during which oxygen rich air is taken in is called inhalation.
A car is moving with 72 km/hrs. The speed of the car in m/s is
- a)30 m/s
- b)20 m/s
- c)40 m/s
- d)25 m/s
Correct answer is option 'B'. Can you explain this answer?
A car is moving with 72 km/hrs. The speed of the car in m/s is
a)
30 m/s
b)
20 m/s
c)
40 m/s
d)
25 m/s
|
|
Meera Reddy answered |
We know ,
1 km=1000m , 1 hour=3600s
1km/h=1000/3600m/s=5/18m/s
72km/h=72×5/18m/s
=4×5m/s
=20m/s.
1 km=1000m , 1 hour=3600s
1km/h=1000/3600m/s=5/18m/s
72km/h=72×5/18m/s
=4×5m/s
=20m/s.
We use woollen clothes in winter as wool is ______.
- a)Poor conductor of Air.
- b)Good conductor of Air.
- c)Cheap and airy.
- d)Soft and spongy.
Correct answer is option 'A'. Can you explain this answer?
We use woollen clothes in winter as wool is ______.
a)
Poor conductor of Air.
b)
Good conductor of Air.
c)
Cheap and airy.
d)
Soft and spongy.
|
Rajesh Khatri answered |
Woolen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres.
One gram of ice is mixed with one gram of steam. At thermal equilibrium the temperature of mixture is- a)0°C
- b)50°C
- c)80°C
- d)100°C
Correct answer is option 'D'. Can you explain this answer?
One gram of ice is mixed with one gram of steam. At thermal equilibrium the temperature of mixture is
a)
0°C
b)
50°C
c)
80°C
d)
100°C
|
Kavya Yadav answered |
Heat required melting 1g of ice at 0 degree to water at 0 degree = 80 cal
Heat required to raise the temperature of 1 g of water from 0 degree to 100 degree = 1 x 1 x 100 =100cal
Total heat required for maximum temperature of 100 = 180 cal
1 g of steam gives 540 cal so the temperature of mixture will be 100 degrees.
Which of the following fibre is not obtained from animals?- a)Leather
- b)Wool
- c)Silk cotton
- d)Silk
Correct answer is 'C'. Can you explain this answer?
Which of the following fibre is not obtained from animals?
a)
Leather
b)
Wool
c)
Silk cotton
d)
Silk
|
Kajal Shah answered |
Silk cotton is a plant fiber from the KAPOK tree used for stuffing for pillows and lifejackets and insulation. Silk cotton is a big tree of 6070 feet tall and 1540 feet wide. It has a soft wood, red flowers, large number of seeds and smaller filaments, Its’s cotton i.e. Silk cotton is softer than the regular cotton.
1) What process allows digested food to pass into the blood vessels in the wall of the intestine?- a)Excretion
- b)Digestion
- c)Assimilation
- d)Absorption
Correct answer is option 'D'. Can you explain this answer?
1) What process allows digested food to pass into the blood vessels in the wall of the intestine?
a)
Excretion
b)
Digestion
c)
Assimilation
d)
Absorption
|
|
Rhea Reddy answered |
The process of digested food passing into the blood vessels in the wall of the intestine is called absorption.
The excess of water absorbed plants by their roots gets evaporated through the process of- a)Absorption
- b)Elimination
- c)Transpiration
- d)Excretion
Correct answer is option 'C'. Can you explain this answer?
The excess of water absorbed plants by their roots gets evaporated through the process of
a)
Absorption
b)
Elimination
c)
Transpiration
d)
Excretion
|
Prisha Mehta answered |
Plants lose gallons of water every day through the process of transpiration, the evaporation of water from plants primarily through pores in their leaves. Up to 99% of the water absorbed by roots is lost via transpiration through plant leaves.
Mode of nutrition in amoeba is- a)Herbivores
- b)Holozoic
- c)Omnivores
- d)Autotrophic
Correct answer is option 'B'. Can you explain this answer?
Mode of nutrition in amoeba is
a)
Herbivores
b)
Holozoic
c)
Omnivores
d)
Autotrophic
|
Anmol Iyer answered |
Nutrition in amoeba is holozoic. Thus, solid food particles are ingested which are then acted upon by enzymes and digested. It is an omnivore, feeding on both plants and animals. Its diet includes bacteria, microscopic plants like the diatoms, minute algae, microscopic animals like other protozoa, nematodes and even dead organic matter.
Which of the following best describes a similarity between clinical and laboratory thermometers?- a)Both are filled with water
- b)Both are made of plastic
- c)Both are filled with mercury
- d)Both are graduated on the Fahrenheit scale
Correct answer is option 'C'. Can you explain this answer?
a)
Both are filled with water
b)
Both are made of plastic
c)
Both are filled with mercury
d)
Both are graduated on the Fahrenheit scale
|
|
Rohini Seth answered |
Both clinical and laboratory thermometers are made of glass and filled with mercury, which expands and contracts uniformly with temperature changes, allowing accurate readings.
What percent of your body weight is water?
- a)50%
- b)70%
- c)60%
- d)80%
Correct answer is option 'C'. Can you explain this answer?
What percent of your body weight is water?
a)
50%
b)
70%
c)
60%
d)
80%
|
|
Rithika Roy answered |
About 60% of our body consists of water. It forms the main constituent of cell and blood.
What are plants that depend on other plants for food called?
- a)Autotrophs
- b)none
- c)Saprotrophs
- d)Parasites
Correct answer is option 'D'. Can you explain this answer?
What are plants that depend on other plants for food called?
a)
Autotrophs
b)
none
c)
Saprotrophs
d)
Parasites
|
Tutorpedia Coaching answered |
Plants that depend on other plants for food are called parasites. They extract nutrients from their host plant, often harming it in the process.
Which of the following is a reversible change?- a)Melting of ice
- b)Germination of seed
- c)Burning of matchstick
- d)Changing of milk into curd
Correct answer is option 'A'. Can you explain this answer?
Which of the following is a reversible change?
a)
Melting of ice
b)
Germination of seed
c)
Burning of matchstick
d)
Changing of milk into curd
|
|
Varun Kapoor answered |
Melting of ice is a reversible change while burning of matchstick, changing of milk into curd and germination of seed is chemical change.
What is the name of object through which light can pass?- a)Opaque
- b)Translucent
- c)Transparent
- d)Luminous
Correct answer is option 'C'. Can you explain this answer?
What is the name of object through which light can pass?
a)
Opaque
b)
Translucent
c)
Transparent
d)
Luminous
|
Sanaya Shah answered |
The object through which light can pass easily is called transparent object. Glass, water and thin plastic sheets are transparent object.
In Japan cyclone is known as- a)Storm
- b)Hurricane
- c)Typhoon
- d)Thunderstorm
Correct answer is option 'C'. Can you explain this answer?
In Japan cyclone is known as
a)
Storm
b)
Hurricane
c)
Typhoon
d)
Thunderstorm
|
Stuti Chakraborty answered |
In Japan cyclone is known as Typhoon. Japan is worst affected by regular typhoon.
Can you explain the answer of this question below:The industry related to fabric and clothing is called
- A:
Fabric industry
- B:
Agro industry
- C:
Textile industry
- D:
Petrochemical industry
The answer is C.
The industry related to fabric and clothing is called
Fabric industry
Agro industry
Textile industry
Petrochemical industry
|
Pallabi Saha answered |
Textile industry is related to fabric and clothing. Textile industry is one of the largest industries employing large number of people.
Why do we feel more comfortable wearing light-colored clothes in the summer?- a)Because dark-colored clothes reflect most of the heat
- b)Because dark-colored clothes absorb more heat
- c)Because light-colored clothes trap heat better
- d)Because light-colored clothes absorb more heat
Correct answer is option 'B'. Can you explain this answer?
Why do we feel more comfortable wearing light-colored clothes in the summer?
a)
Because dark-colored clothes reflect most of the heat
b)
Because dark-colored clothes absorb more heat
c)
Because light-colored clothes trap heat better
d)
Because light-colored clothes absorb more heat
|
Bespoke Classes answered |
In the summer, we feel more comfortable wearing light-colored clothes because they reflect most of the heat that falls on them. This keeps us cooler compared to dark-colored clothes, which absorb more heat. So, when it's hot outside, light-colored clothes help us stay cool!
State whether the following statement is True or FalseHeat always flows from a colder object to a hotter object.- a)True
- b)False
- c)ERROR
- d)ERROR
Correct answer is option 'B'. Can you explain this answer?
State whether the following statement is True or False
Heat always flows from a colder object to a hotter object.
a)
True
b)
False
c)
ERROR
d)
ERROR
|
Keystone Instructors answered |
- When we talk about heat, it actually flows from a hotter object to a colder object, not the other way around.
- Imagine you have a hot cup of tea and a cold ice cube.
- If you put the ice cube in the tea, the heat from the tea moves to the ice cube, making the ice cube melt.
- This shows that heat moves from hot things to cold things.
- So, the statement is False.
Water is a/an- a)Element
- b)Mixture
- c)Solution
- d)Compound
Correct answer is option 'D'. Can you explain this answer?
Water is a/an
a)
Element
b)
Mixture
c)
Solution
d)
Compound
|
Anand Iyer answered |
Water is a compound as it contains hydrogen and oxygen in fixed ration by mass.
Rainwater harvesting is a method of
- a)Water Conversation
- b)Producing water for future use
- c)Using rain water for daily purpose
- d)All of these
Correct answer is option 'A'. Can you explain this answer?
Rainwater harvesting is a method of
a)
Water Conversation
b)
Producing water for future use
c)
Using rain water for daily purpose
d)
All of these
|
Pragati Choudhary answered |
Rain water harvesting is a method of water conservation by collection of rainwater mostly from the roof into a tank. It can then be used for multiple purposes. If untreated it can be used for watering the plants, washing the livestock etc. If treated properly it can be used for domestic purposes and even for drinking. One important application of collected rain water is to recharge the ground water.
A wind vane is used to measure the- a)Air humidity
- b)Wind direction
- c)Air pressure
- d)Wind speed
Correct answer is option 'B'. Can you explain this answer?
A wind vane is used to measure the
a)
Air humidity
b)
Wind direction
c)
Air pressure
d)
Wind speed
|
Geetika Shah answered |
A wind vane is a simple device to know the direction of wind at particular time.
Glass, plastic, wood are examples of- a)Insulator
- b)Conductor
- c)Radiators
- d)Convectors
Correct answer is option 'A'. Can you explain this answer?
Glass, plastic, wood are examples of
a)
Insulator
b)
Conductor
c)
Radiators
d)
Convectors
|
|
Sanjana Kumar answered |
Conductors conduct electrical current very easily because of their free electrons. Insulators oppose electrical current and make poor conductors. Some common conductors are copper, aluminum, gold, and silver. Some common insulators are glass, air, plastic, rubber, and wood.
There is acute water shortage due to
- a)Excessive population growth
- b)Climate change
- c)Global warming
- d)Excess evaporation
Correct answer is option 'A'. Can you explain this answer?
There is acute water shortage due to
a)
Excessive population growth
b)
Climate change
c)
Global warming
d)
Excess evaporation
|
Advait Pillai answered |
There is acute shortage of water throughout the world due to excessive population growth which leads to overuse and misuse of water.
Ingestion is the process in which organisma)intake of food inside the body b)Nutrient are utilisedc)Digest the bodyd)Undigested food are removedCorrect answer is 'A'. Can you explain this answer?
|
|
Kavya Rane answered |
While ingestion refers to the taking in of a substance, there are a multitude of mechanisms by which various organisms do this. Everything from the tiny cells of your body, single-celled organisms, such as amoebas and paramecium, bacteria, and yeasts to animals and humans ingest nutritive substances.
Climate of a place do not depends on
- a)Latitude
- b)Wind
- c)Humidity
- d)Longitude
Correct answer is option 'D'. Can you explain this answer?
Climate of a place do not depends on
a)
Latitude
b)
Wind
c)
Humidity
d)
Longitude
|
|
Palak Iyer answered |
The factors that determine the climate of a place are:
· Latitude
· Altitude
· Winds
· Distance from the sea
· Humidity and Ocean Currents
Longitude is not a factor that determines the climate of a place.
Which of the following is a parasite?
- a)Algae
- b)Cuscuta
- c)Mushroom
- d)Yeast
Correct answer is option 'B'. Can you explain this answer?
Which of the following is a parasite?
a)
Algae
b)
Cuscuta
c)
Mushroom
d)
Yeast
|
|
Tutorpedia Coaching answered |
Chlorophyll's main role in photosynthesis is to capture the solar energy, which is then used to convert carbon dioxide and water into carbohydrates. This process is crucial for the synthesis of food in plants.
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Water A Precious Resource, Class 7, Science. You can practice these practice quizzes as per your speed and improvise the topic. Q.Ground water between two layers of rocks is called- a)Rain water
- b)Water table
- c)Aquifer
- d)Water level
Correct answer is 'C'. Can you explain this answer?
Practice Quiz or MCQ (Multiple Choice Questions) with solutions are available for Practice, which would help you prepare for chapter Water A Precious Resource, Class 7, Science. You can practice these practice quizzes as per your speed and improvise the topic.
Q.
Ground water between two layers of rocks is called
a)
Rain water
b)
Water table
c)
Aquifer
d)
Water level
|
Kiran Bajaj answered |
If groundwater is between two confined layers, it is called confined aquifer. If groundwater is not confined by an upper confining layer, it is unconfined equifer. If, on the other hand, groundwater is confined by two confining units (such as upper confining layer and lower confining layer), it is called confined aquifer.
Silk fibre is drawn from ____________ of silk moth.- a)Hair
- b)Caterpillar
- c)Pupa
- d)Cocoon
Correct answer is option 'D'. Can you explain this answer?
Silk fibre is drawn from ____________ of silk moth.
a)
Hair
b)
Caterpillar
c)
Pupa
d)
Cocoon
|
Kiran Mehta answered |
Following are the stages of production of silk:
1. The silk moth lays thousands of eggs.
2. The silk moth eggs hatch to form larvae or caterpillars, known as silkworms.
3. The larvae feed on mulberry leaves.
4. Having grown and moulted several times, the silkworm extrudes a silk fiber and forms a net to hold itself.
5. It swings itself from side to side in a figure '8' distributing the saliva that will form silk.
6. The silk solidifies when it contacts the air.
7. The silkworm spins approximately one mile of filament and completely encloses itself in a cocoon in about two or three days. The amount of usable quality silk in each cocoon is small. As a result, about 2500 silkworms are required to produce a pound of raw silk.
8. The intact cocoons are boiled, killing the silkworm pupa.
9. The silk is obtained by brushing the undamaged cocoon to find the outside end of the filament.
10. The silk filaments sec then wound on a reel. One cocoon contains approximately 1,000 yards of silk filament. The silk at this stage is known as raw silk. One thread comprises up to 48 individual silk filaments.
Q. The centre of cyclone is known asa)Eyes of hurricanesb)Ear of hurricanesc)Middle of hurricanesd)Nose of hurricanesCorrect answer is option 'A'. Can you explain this answer?
|
|
Prashanth Sen answered |
The most recognizable feature found within a cyclone is the eye. They are found at the center and are between 20-50km in diameter. The eye is the focus of the cyclone, the point about which the rest of the storm rotates and where the lowest surface pressures are found in the storm
When two or more cells are joined together it forms a- a)Dynamo
- b)Battery
- c)Radio
- d)Transistor
Correct answer is option 'B'. Can you explain this answer?
When two or more cells are joined together it forms a
a)
Dynamo
b)
Battery
c)
Radio
d)
Transistor
|
Saikat Chawla answered |
Combination of two or more cells are joined together forms battery.
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