Atoms and Nuclei (NEET Physics): Questions 34 - 39 of 67

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Question number: 34

» Atoms and Nuclei » Composition and Size of Nucleus

MCQ▾

Question

How many electrons, protons and neutrons are there in a 6 gm of 6 C 12?

Choices

Choice (4) Response
a.

36 × 1023, 36 × 1023, 36 × 1023

b.

18 × 1023, 18 × 1023, 18 × 1023

c.

6 × 1023, 6 × 1023, 6 × 1023

d.

12 × 1023, 12 × 1023, 12 × 1023

Question number: 35

» Atoms and Nuclei » Binding Energy Per Nucleon

MCQ▾

Question

If the binding energy of deuterium is 2.23 MeV, then the mass defect will be- (in a. m. u. )

Choices

Choice (4) Response
a.

- 0.0012

b.

0.0024

c.

-0.0024

d.

0.0012

Question number: 36

» Atoms and Nuclei » Nuclear Fission and Fusion

MCQ▾

Question

Power output of 92 U 235 reactor if it takes 30 days to use up 2 kg of fuel, and if each fission gives 185 MeV of useable energy is-

Choices

Choice (4) Response
a.

5.846 kW

b.

0.5846 kW

c.

58.46 MW

d. Question does not provide sufficient data or is vague

Question number: 37

» Atoms and Nuclei » Radioactivity

MCQ▾

Question

Which of the following are modes of radioactive decay?

(1) Positron emission (2) Electron capture

(3) α -decay (4) Fusion

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response
a.

1, 2 and 3 are correct

b.

1 and 3 are correct

c.

1 and 2 are correct

d.

2 and 4 are correct

Question number: 38

» Atoms and Nuclei » Binding Energy Per Nucleon

MCQ▾

Question

The mass of helium nucleus is less than that of its constituent particles by 0.03 a. m. u. The binding energy per nucleon of 2 He 4 nucleus will be,

Choices

Choice (4) Response
a. 21 MeV
b.

3.5 MeV

c.

14 MeV

d.

7 MeV

Question number: 39

» Atoms and Nuclei » Binding Energy Per Nucleon

MCQ▾

Question

Deuterium is an isotope of hydrogen having a mass of 2.01470 a. m. u. Find binding energy in MeV of this isotope,

Choices

Choice (4) Response
a.

1.741 MeV

b.

2.741 MeV

c.

2.174 MeV

d.

0.741 MeV

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