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4

During thunder storm you are travelling in a car. To protect yourself from the lightning you will have to

A. remain in the car

B. get out of the car and lie flat in the ground

C. abandon the car and take shelter under a nearby tree

D. touch the nearest electric pole

Correct Answer :

A. remain in the car


Related Questions

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The unit of power in SI is

A. Joule

B. Newton

C. Joule/Sec

D. Erg/Sec

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4

When ice melts, Its volume

A. decreases

B. increases

C. remains the same until all the ice has melted and then increases

D. remains the same

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4

A light year means

A. a unit of time

B. a unit of length

C. a year of no consequence

D. illumination throughout the year

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4

The coil of an electric heater is made of

A. Platinum

B. Tungsten

C. Nichrome

D. Copper

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4

When sound waves travel from one medium to another, the quantity which remains unchanged is its

A. speed

B. frequency

C. wavelength

D. All the above

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4

Two tumblers stuck together can be separated by

A. pouring ice cold water into the inner tumbler

B. pouring ice cold water on the outer tumbler

C. pouring hot water into the inner tumbler

D. dipping both the tumblers in hot water

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4

The motion .of the pendulum of a wall clock is an example of

A. linear motion

B. vibratory motion

C. rotational motion

D. None of the above

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4

The radiator in a car serves to

A. cool the engine

B. heat up the engine

C. start the car

D. moderate the speed

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4

When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight of the liquid displaced by the submerged portion. This is known as

A. Pascal's law

B. Bernoulli's law

C. Archimedes' law

D. Boyle's law

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4

Which of the following is not electromagnetic waves?

A. heat waves

B. sound waves

C. radio waves

D. light waves

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4

The escape velocity of a satellite projected from the surface of the earth is independent of

A. the mass of earth

B. the mass of the satellite

C. the radius of the earth

D. gravitation of the earth

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4

In a vacuum the following three articles are dropped at the same time and from the lame height. Which will reach the ground quicker?

A. a stone

B. a piece of wood

C. a feather

D. all will reach the ground at the same time

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4

When an electric bulb breaks, there la an explosive sound. That is due to

A. the chemical reaction between the gases inside the bulb

B. the compressed gases inside rushing out suddenly

C. the air outside rushing in to fill the vacuum inside the bulb

D. None of the above

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4

The electrical domestic tube light gives white fiourescent light because of

A. collision between molecules of filled gas under electric current

B. heavy current

C. vacuum inside the tube

D. falling of ultra violet rays on the white inner coating of the tube

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4

The planet that is known as earth's twin is

A. Mercury

B. Venus

C. Moon

D. Mars

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4

Stars twinkle because of

A. refraction of light from them through air

B. reflection

C. absorption

D. All the above

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4

During thunder storm you are travelling in a car. To protect yourself from the lightning you will have to

A. remain in the car

B. get out of the car and lie flat in the ground

C. abandon the car and take shelter under a nearby tree

D. touch the nearest electric pole

What is the correct answer?

4

The brightest planet in the Solar System is

A. Jupiter

B. Mercury

C. Venus

D. Sirius

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4

Astigmatism, a structural defect of the eye, is due to

A. the eye lens being thin

B. the eye lens being thick

C. lack of symmetry in the curvature of the eye preventing rays of light from being brought to a common focus

D. the pupil being very small

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4

The SI unit of electric current is

A. the ampere

B. the volt

C. the ohm

D. the coulomb

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4

The pressure of air at high altitude is less than the atmospheric pressure at the sea level. Hence the boning point of water at a hill top

A. is more than at sea level

B. is equal to that sea level

C. is less than at sea level

D. depends on the surrounding temperature

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4

The principle on which a Jet engine works is

A. conservation of mass

B. Newtonian law of action and reaction

C. conservation of angular momentum

D. None of the above

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4

The mass number and the atomic number of an element are X and Y respectively. The number oC neutrons in the atom of that element is

A. X

B. Y

C. X + Y

D. X Y

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4

The maximum range of most TV signals is from 121 to 240 km only because

A. the curvature of earth limits the range of reception

B. the signals are weak

C. the signals are absorbed by air

D. the antennae are not powerful enough

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4

At what temperature do the Fahrenheit and Celsius scales give the same reading?

A. 212°

B. 32°

C. -40°

D.

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4

The rate of cooling of a hot body depends on

A. the nature of the radiating surface

B. area of the radiating surface

C. temperature difference between the body and the surroundings

D. All the above

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4

Photoelectric cell is a device which converts

A. light energy into electrical energy

B. electrical energy into light energy

C. magnetic energy into electrical energy

D. electrical energy into mechanical energy

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4

In an oil lamp, holes are provided below the chimney so that

A. necessary oxygen for burning of oil may be provided

B. the convection current of air may be maintained to keep the lamp burning

C. the brightness of the lamp may be increased

D. All the above

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4

The Indian Space Research Organisation (ISRO) is located at

A. Thumba

B. Bangalore

C. Ahmedabad

D. New Delhi

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Mercury is used in thermometers because

A. it has high thermal conductivity

B. it has uniform expansivity

C. it has high boiling point and low freezing point

D. of all the above