ECAT Pre Computer Science Chapter 21 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

Try The MCQ's Test For ECAT Physics Chapter 21 Nuclear Physics

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ECAT Physics Chapter 21 Nuclear Physics

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Question # 1

Nucleus consists of

Question # 2

A pair of quark and antiquark makes a:

Question # 3

Phenomenon of radioactivity is due to disintegration of

Question # 4

Heavy water is made of one oxygen atom and two atoms of:

Question # 5

Neutron was discovered by

Question # 6

According to Rutherford atomic model, the positive charge in an atom

Question # 7

In radio-active decay, the original element which disintegrate to another element is called

Question # 8

Mass of neutron is

Question # 9

There is present in paraffin a large amount of:

Question # 10

The range of particle depends upon the factor

Question # 11

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 12

Radioactivity was discovered by

Question # 13

A mass difference of 0.0012 u is equivalent to and energy of:

Question # 14

The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called

Question # 15

Gamma rays consist of steam of

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 β-particles are easily deflected by collisions than heavy
A. α-particles
B. β-particles
C. γ-particles
D. none of these
2 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
3 Nucleus consists of
A. proton and neutron
B. protons and electron
C. electron and neutron
D. protons only
4 γ-rays are
A. electrostatic waves
B. electromagnetic waves
C. heavy particles
D. longitudinal waves
5 For an atom having atomic number Z and atomic weight A, the number of electron in an atoms
A. A - Z
B. A + Z
C. Z
D. A
6 When certain nucleus emits anα particle, its mass number:
A. Increases by one
B. Decreases by one
C. Remain same
D. Decreases by four
7 The amount of energy equivalent to 1 a.m.u is
A. 9.315 Mev
B. 93.15 Mev
C. 931.5 Mev
D. 2.22 Mev
8 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
9 1 amu is equal to
A. 1.66 x 10-24kg
B. 1.66 x 10-19kg
C. 1.66 x 10-34kg
D. 1.66 x 10-27kg
10 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams

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