Atoms and Nuclei (BITSAT Physics): Questions 1 - 6 of 26

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Question number: 1

» Atoms and Nuclei » Half Life and Mean Life

MCQ▾

Question

Half – life of a radioactive material depends on –

Choices

Choice (4) Response

a.

Temperature

b.

Disintegration medium

c.

Nature of material

d.

Material’s amount

Question number: 2

» Atoms and Nuclei » Atomic Masses

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 3

» Atoms and Nuclei » Energy Levels

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Release energy

b.

Absorb energy

c.

No gain of energy

d.

No loss of energy

Question number: 4

» Atoms and Nuclei » Half Life and Mean Life

MCQ▾

Question

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

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 5

» Atoms and Nuclei » Composition and Size of Nucleus

MCQ▾

Question

Equation and Equation differ as –

Choices

Choice (4) Response

a.

Equation has 2 protons less

b.

Equation has 3 neutrons more

c.

Equation has 3 protons less

d.

All of the above

Question number: 6

» Atoms and Nuclei » Bohr Model

MCQ▾

Question

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

Choices

Choice (4) Response

a.

6

b.

4

c.

Equation

d.

2

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