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Current Affairs January 2024

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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

Correct Answer :

A. Thorium


Related Questions

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The completely dark portion of a shadow of an object is known as

A. umbra

B. penumbra

C. image

D. black portion of light

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Before the invention of geostationary satellites, television stations could not transmit their programmes to far off places because

A. these signals are electromagnetic in nature

B. these are not electromagnetic in nature

C. their wavelength is very large

D. they are not reflected by the ionosphere but pass through it

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Which metal is used in storage batteries?

A. Copper

B. Lead

C. Tin

D. Iron

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A bullet is fired at a certain angle with the horizontal. Its path will be

A. elliptical

B. a straight line

C. a parabola

D. a vertical line

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The inability of a body to change its state of rest or uniform motion along a straight line is called its

A. momentum

B. velocity

C. acceleration

D. inertia

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Solids have definite shapes. This is because

A. the forces of cohesion of the molecules within are very much less in them

B. the forces of cohesion are very large

C. the forces of adhesion are large

D. the forces of adhesion are less

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Isotones are species of atoms containing

A. same number of protons but different number of neutrons

B. same number of neutrons but different number of protons

C. the same total number of protons and neutrons

D. same number of protons and different number of electrons

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A star contains

A. about 75% of hydrogen

B. 22% helium

C. traces of most other elements including oxygen, neon, carbon and nitrogen

D. All the above

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While crossing a suspension bridge, the soldiers are ordered to break steps because

A. the marching in steps will involve a big strain on them

B. the resonant vibrations caused by their marching can damage the bridge increasing the amplitude to dangerous proportions

C. the marching may obstruct other traffic

D. rumblings of their marching may disturb the surroundings

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When an incident beam of light strikes the surface of a glass slab normally, the refracted beam

A. goes straight through without bending

B. gets deviated away from the normal

C. gets bent towards the normal

D. gets reflected

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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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A star contains

A. about 75% of hydrogen

B. 22% helium

C. traces of most other elements including oxygen, neon, carbon and nitrogen

D. All the above

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A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is

A. greater than the weight of the man

B. less than the weight of the man

C. same as the weight of the man

D. zero

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Tea pots are highly polished

A. so that they may reflect thermal radiation from outside and minimise such radiation from them

B. so that they may absorb all radiation from outside

C. to make them attractive to look at

D. because they take high polish

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The method used to separate aluminium from a alumina is

A. electroplating

B. electrotyping

C. electrolysis

D. distillation

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The force of attraction or repulsion between two charged bodies is directly proportional to the product of the charges and inversely proportional to the square of distance between them. This was propounded by

A. Coulomb

B. Gilbert

C. Volta

D. Rutherford

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A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan

A. increases

B. decreases

C. remains the same

D. first increases and then decreases

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Under similar conditions of temperature and pressure, the velocity of sound is maximum in

A. helium

B. argon

C. hydrogen

D. oxygen

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When are temperature resistance

A. increases

B. decreases

C. remains the same

D. first increases then decreases

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A rheostat is used

A. to increase the current flow in a circuit

B. to decrease the current flow

C. to measure the flow of electric current

D. Either (a) or (b) above

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Every action has an equal and opposite reaction is Newton's law of Motion

A. first

B. second

C. third

D. fourth

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Which is the densest planet of the solar system?

A. Sun

B. Jupiter

C. Mercury

D. Earth

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The Solar System lies near the edge of a galaxy known as

A. The Milky Way

B. Radio Galaxy

C. Andromeda Nebula

D. Magellanic Clouds

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The velocity of sound in air

A. increases as the square root of the absolute temperature

B. decreases with temperature

C. is independent of temperature

D. None of these

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A workman was working on a rail track. A young boy at a distance holds his ear close to the railway track. The boy was able to hear the sound of each blow or the workman twice. It is because

A. speed of sound is greater in steel than in air

B. speed of sound is greater in air than in steel

C. part of sound waves is reflected between rail tracks

D. the boy's ears are at a different distance from the source

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A convex mirror always produces

A. an erect, virtual image of diminished size

B. an erect, real image of diminished size

C. an erect, real image of double size

D. a virtual image of double size

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Of the following which has got the highest frequency?

A. ultraviolet rays

B. gamma rays

C. radio waves

D. infrared waves

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When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is

A. the violet ray

B. the red ray

C. the green ray

D. the blue ray

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The largest planet in the solar system is

A. Neptune

B. Uranus

C. Jupiter

D. Saturn

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Dioptre is the unit of power of

A. convex mirrors

B. concave mirrors

C. concave lenses

D. lenses irrespective of types