2.
Which one of the following is not a property of the X-rays?

3.
Which Indian organization, related to the development of nuclear energy, is situated at Kolkata?

5.
Which one of the following is not correct?

6.
Stars obtain their energy from
1. Nuclear fusion
2. Gravitational contraction
3..Chemical reaction
4. Nuclear fission
Select your answer:

7.
Consider the statements.
1. Photon is a particle of light.
2. Mass of photon is not defined.
3. Speed of photon is as the speed of light.
4. Photons are charged.
Which options is/are correct?

8.
Assertion (A) Amongst alpha, beta and gamma rays, α-particle has maximum penetrating power.
Reason (R) The alpha particle is heavier than beta and gamma rays.

10.
Consider the following statements.
1. The Nuclear Security Summits are periodically held under the aegis of the United Nations.
2. The International Panel on Fissile Materials is an organ of International Atomic Energy Agency.
Which of the statements given above is/are correct?

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