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Isotopes and Radioactive Decay

Total questions: 12

Worksheet time: 11mins

Name
Class
Date
1.

What is the meaning of isotope?

a)

Elements with same mass number but different proton number

b)

Elements with same nucleon number but different proton number

c)

Elements with different nucleon number and different proton number

d)

Elements with different mass number but same proton number

2.

Which are true for isotope

a)

Same proton number

b)

Same nucleon number

c)

Same mass number

3.

Which are true for isotope?

a)

Different proton number

b)

Different mass number

c)

Different nucleon number

4.

Above shows a radioactive decay of Radium-226 to Radon-222, what kind of decay is this?

a)

Alpha

b)

Beta

c)

Gamma

5.

The equation above shows cobalt-60 decay into nickel-60, what kind of radioactive decay is this?

a)

Alpha

b)

Beta

c)

Gamma

6.

Which of these describes an alpha particle

a)

Physically same like a proton atom

b)

Physically same like an electron atom

c)

Physically same like a helium atom

d)

Physically same like a neutron atom

7.

The reaction above shows a chain radioactive decay. How many α and β particles were produced?

a)

1 α and 3 β

b)

2 α and 3 β

c)

3 α and 2 β

d)

3 α and 1 β

8.

Which of the following radioactive radiation has the highest speed?

a)

α particles

b)

β particles

c)

γ ray

9.

Which of the following radioactive radiation has the highest mass?

a)

α particles

b)

β particles

c)

γ ray

10.

Which of the following radioactive radiation has no mass?

a)

α particles

b)

β particles

c)

γ ray

11.

Which of the following radioactive radiation can be blocked by several millimetres of aluminium?

a)

α particles

b)

β particles

c)

γ ray

12.

Which of the following radioactive radiation has the lowest penetrating power?

a)

α particles

b)

β particles

c)

γ ray