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Current Affairs January 2024

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4

It is difficult to bon potatoes at the top or a mountain because

A. the water available is hard

B. it is colder than at sea level

C. the potatoes become hard

D. the boiling point of water is lower at that height on account of low atmospheric pressure

Correct Answer :

D. the boiling point of water is lower at that height on account of low atmospheric pressure


Related Questions

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4

Which of the following pairs is not correct?

A. Television - Baird

B. Transistor ~ Shockley

C. Thermometer - Celsius

D. Barometer Torricelli

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4

A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps

A. the ball will travel towards the centre of the circle and fall down

B. it will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down

C. it will fall down at the same place where the string breaks

D. None of these

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4

The largest reserve of radioactive element which can be used in a nuclear reactor has been found in India, The name of the element is

A. Thorium

B. Uranium

C. Plutonium

D. Radium

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4

The maximum displacement of the particle in a mechanical wave motion is known as

A. amplitude

B. vibration

C. frequency

D. phase

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4

If an empty cylinder Is half ruled with a liquid, Its centre of gravity is

A. shifted upwards

B. shifted downwards

C. shifted neither upward nor downward

D. shifted upward or downward depending on the density of the liquid

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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

What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space?

A. 18 km/sec

B. 11.2 km/ sec

C. 21 km/ sec

D. 35 km/ sec

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4

The nuclear model of atom was first visualised by

A. Rutherford

B. Neils Bohr

C. Albert Einstein

D. JJ Thompson

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4

It is difficult to bon potatoes at the top or a mountain because

A. the water available is hard

B. it is colder than at sea level

C. the potatoes become hard

D. the boiling point of water is lower at that height on account of low atmospheric pressure

What is the correct answer?

4

The velocity of sound in a medium is

A. directly proportional to its pressure

B. inversely proportional to the square root of its pressure

C. directly proportional to the square root of its pressure

D. independent of its pressure

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4

In experiments on static electricity the standard method for obtaining small amounts of positive electricity is to rub

A. a glass rod with flannel

B. an abonite rod with flannel

C. a glass rod with silk

D. Any of the above

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4

We cannot see and without the aid of a telescope

A. Neptune and Pluto

B. Jupiter and Saturn

C. Venus and Mars

D. Venus and Saturn

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4

When light passes from air to glass, its velocity in glass

A. increases

B. decreases

C. remains unchanged

D. first decreases then increases

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4

The brightest star visible to the naked eye is

A. Sirius

B. Vega

C. Rigel

D. Proxima Centauri

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4

A hydrogen bomb is based on

A. nuclear fusion

B. nuclear fission

C. Both (a) and (b) above

D. Neither (a) nor (b)

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4

Which of the following is fissionable?

A. U-234

B. U-235

C. U-238

D. Both (b) and (c)

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4

Which of the following is wrongly matched?

A. electric current - ampere

B. resistance - Ohm

C. electric power - volt

D. electric charge Coulomb

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4

The ozone layer absorbs

A. Cosmic rays

B. Infrared rays

C. All radiations of light

D. Ultra violet rays coming from the sun

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4

The image of an object formed on the retina of the eye is

A. virtual and upright

B. virtual and inverted

C. real and inverted

D. real and upright

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4

It is difficult to bon potatoes at the top or a mountain because

A. the water available is hard

B. it is colder than at sea level

C. the potatoes become hard

D. the boiling point of water is lower at that height on account of low atmospheric pressure

What is the correct answer?

4

On applying a constant force to a mass, It moves with a uniform

A. velocity

B. momentum

C. acceleration

D. angular velocity

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4

The atmosphere gets heated up mainly by

A. direct sun's rays

B. radiation from earth's surface

C. radiogenic heat (resulting from radioactive decay)

D. cosmic rays coming from space

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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

Lightning conductors are made of

A. iron

B. chromium

C. copper

D. steel

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4

It is easier to climb down a staircase than climb up because in climbing down

A. work is done against gravity

B. the steepness of the staircase isn't felt

C. gravity assists

D. there is no friction between the legs and steps

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4

Velocity of sound in high altitudes is low because at such a height

A. the temperature is low

B. there is no air

C. the pressure is low

D. All the above

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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 velocity required to place a vehicle in orbit round the moon is _________ that required to place it in orbit round the earth.

A. less than

B. greater than

C. equal to

D. greater than or equal to

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4

When a steel ball is placed on the surface of mercury, it does not sink because

A. of the surface tension of mercury

B. mercury is a semi-solid

C. of the high viscosity of mercury

D. the density of mercury is greater than that of steel

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4

Among the following the most suitable material for the core of an electro-magnet is

A. steel

B. wood

C. soft iron

D. copper