Atoms and Nuclei [BITSAT (Birla Institute of Technology & Science Admission Test) Physics]: Questions 1 - 7 of 26

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Question 1

Atoms and Nuclei

Question

MCQ▾

Half – life of a radioactive material depends on –

Choices

Choice (4)Response

a.

Material՚s amount

b.

Temperature

c.

Disintegration medium

d.

Nature of material

Question 2

Atoms and Nuclei

Question

MCQ▾

What is the mass of a silver atom? (Avogadro՚s number and atomic mass of silver )

Choices

Choice (4)Response

a.

b.

c.

d.

Question 3

Atoms and Nuclei

Question

MCQ▾

If an electron jumps from 1st orbit to 3rd orbit, then –

Choices

Choice (4)Response

a.

No loss of energy

b.

Absorb energy

c.

No gain of energy

d.

Release energy

Question 4

Atoms and Nuclei

Question

MCQ▾

What percent of original radioactive atoms is left after five half – lives?

Choices

Choice (4)Response

a.

b.

c.

d.

Question 5

Question

MCQ▾

and differ as –

Choices

Choice (4)Response

a.

has 3 neutrons more

b.

has 3 protons less

c.

has 2 protons less

d.

Question does not provide sufficient data or is vague

Question 6

Atoms and Nuclei

Question

MCQ▾

The mass number of is and that of sulfur is . The radius of sulfur nucleus is larger than that of helium by a factor of –

Choices

Choice (4)Response

a.

4

b.

c.

2

d.

6

Question 7

Atoms and Nuclei

Question

MCQ▾

When an electron is emitted from a nucleus, then effect on its “neutron-proton” ratio is

Choices

Choice (4)Response

a.

Decreased

b.

Increased

c.

Remains same

d.

Question does not provide sufficient data or is vague

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