General Ability Test - 3

It was discovered by Paul Villard.

[It consists of the shortest wavelength electromagnetic waves and so imparts the highest photon energy. Paul Villard, a French chemist and physicist, discovered gamma radiation in 1900 while studying radiation emitted by radium.

Hence option B is the correct answer.

The Nilgiri Biosphere Reserve

The Nilgiri Biosphere Reserve was the first biosphere reserve in India established in the year 1986. It is located in the Western Ghats and includes 2 of the 10 biogeographical provinces of India.

Hence option A is the correct answer.

A boat will float when the weight of the water it displaces equals the weight of the boat and anything will float if it is shaped to displace its own weight of water before it reaches the point where it will submerge. Floating of the boat works on the principle of buoyancy force which is an upward force exerted by a liquid, gas or other fluid, that opposes the weight of an immersed object.  In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus a column of fluid, or an object submerged in the fluid, experiences greater pressure at the bottom of the column than at the top. This difference in pressure results in a net  force that tends to accelerate an object upwards.

Hence option B is the correct answer.

Vitamin D.-Vitamin D can be made by our body itself. Our skin uses sunlight to produce vitamin D.

Hence option D is the correct answer.

weight-the measurement of the gravitational pull on an object is its weight.

Hence option B is the correct answer.

Charle’s Law describes the relation between Volume and Temperature.

[Charles' law states that the volume of a gas equals a constant value multiplied by its temperature as measured on the Kelvin scale.]

Hence option A is the correct answer.

Atomic number is the number of electrons or protons.

Hence option A is the correct answer.

Newton’s Third Law states that “To every action, there is an equal and opposite reaction”. When a gun is fired, it thus recoils and while we swim we exert force on the water which exerts force on us, due to which we move forward.

Hence option C is the correct answer.

Mass of proton is 1.672621777(74) × 10⁻²⁷ kg. An electron has a mass (9.10938291(40) × 10−31 kg) that is approximately 1 / 1836 that of the proton. The mass of neutron is slightly larger than that of a proton. The mass of the hydrogen nucleus is 1.7 × 10⁻²⁷ kg. The heaviest of these particles is the neutron.

Hence option C is the correct answer.

The force responsible for changing the state of motion of objects in contact is called the force of friction. It always acts on all moving objects.

Hence option C is the correct answer.