Samacheer Kalvi Class 10 Science Nuclear Physics Questions - 1

Question: 1

Proton-Proton chain reaction is an example of

(A) Alpha decay

(B) Beta decay

(C) Nuclear fusion

(D) Nuclear fission

Question: 2

Artificial radioactivity was discovered by _____

(A) Becquerel

(B) Roentgen

(C) Neils Bohr

(D) Irene Curie

Question: 3

Gamma radiations are dangerous because

(A) It produces genetic disorder

(B) It produces enormous amount of heat

(C) It affect tissues

(D) It affects eyes and bones

Question: 4

Kamini reactor is located at

(A) Rajasthan

(B) Mumbai

(C) Koodankulam

(D) Kalpakkam

Question: 5

_____ aprons are used to protect us from gamma radiations.

(A) Aluminium

(B) Lead

(C) Iron

(D) Lead oxide

Question: 6

____ isotope is used for the treatment of cancer.

(A) Radio Cobalt

(B) Radio Carbon

(C) Radio Nickel

(D) Radio Iodine

Question: 7

Which of the following is/are correct?
(i) Chain reaction takes place in a nuclear reactor and an atomic bomb
(ii) The chain reaction in a nuclear reactor is controlled
(iii) The chain reaction in a nuclear reactor is not controlled
(iv) No chain reaction takes place in an atom bomb

(A) (i) only correct

(B) (i) and (ii) are correct

(C) (iv) only correct

(D) (iii) & (iv) are correct

Question: 8

Man-made radioactivity is also known as

(A) Induced radioactivity

(B) Spontaneous radioactivity

(C) Artificial radioactivity

(D) Both A and C

Question: 9

The SI unit of radioactivity is

(A) Becquerel

(B) Curie

(C) Roentgen

(D) All the above