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Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 9th Standard Science - English Medium - Nuclear Physics

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Samacheer Kalvi 9th
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Nuclear Physics

Samacheer Kalvi 9th Science - Nuclear Physics - Book Back Questions in English Medium

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Question 1 Of 10

Unit of radioactivity is .

roentgen curie becquerel all the above

Question 2 Of 10

Artificial radioactivity was discovered by.

Bequerel Irene Curie Roentgen Neils Bohr

Question 3 Of 10

Gamma radiations are dangerous because

it affects eyes & bones it affects tissues It produces a genetic disorder it produces enormous amount of heat

Question 4 Of 10

In which of the following, no change in mass number of the daughter nuclei takes place

(i) is correct (ii) and (iii) are correct (i) & ( iv) are correct (ii) & (iv) are correct Ans : (

Question 5 Of 10

Man-made radioactivity is also known as.

Induced radioactivity Spontaneous radioactivity Artificial radioactivity a & c

Question 6 Of 10

In the nuclear reaction 6X12 α decay ZYA, the value of A & Z.

8, 6 8, 4 4, 8 cannot be determined with the given data

Question 7 Of 10

aprons are used to protect us from gamma radiations

Lead oxide Iron Lead Aluminum

Question 8 Of 10

Isotope is used for the treatment of cancer.

Radio Iodine Radio Cobalt Radio Carbon Radio Nickel

Question 9 Of 10

Which of the following is/are correct?

(i) only correct (i) & (ii) are correct (iv) only correct (iii) & (iv) are correct

Question 10 Of 10

Proton-Proton chain reaction is an example of.

Nuclear fission α – decay Nuclear fusion β – decay