Gamma radiations are dangerous because

_____________ aprons are used to protect us from gamma radiations

In the nuclear reaction ₆X¹² \(\overset { \alpha \ decay }{ \longrightarrow } \) _zY^A, the value of A & Z.

The radio isotope of ________ helps to increase the productivity of crops.

If the radiation exposure is 100 R, it may cause ______________.

Assertion: A neutron impinging on U²³⁵, splits it to produce Barium and Krypton.
Reason: U - 235 is a fissile material.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) Assertion is true, but the reason is false.
(d) Assertion is false, but the reason is true.

Assertion: Control rods are known as 'neutron seeking rods'
Reason: Control rods are used to perform sustained nuclear fission reaction.
(a) If both the assertion and the reason are true and the reason is the correct explanation of the assertion.
(b) If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
(c) Assertion is true, but the reason is false.
(d) Assertion is false, but the reason is true.

Spontaneous process : Natural Radioactivity,
Induced process : ________

Deflected by electric field : \(\alpha\) ray,
Null Deflection : __________

Which material protects us from radiation?

Mr. Ramu is working as an X - ray technician in a hospital. But, he does not wear the lead aprons. What suggestion will you give to Mr. Ramu?

Give any two uses of radio isotopes in the field of agriculture?

A radon specimen emits radiation of 3.7 × 10³ GBq per second. Convert this disintegration in terms of curie. (one curie = 3.7 × 10¹⁰ disintegration per second).