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

The chemical properties of all the isotopes of an elements are

Question # 2

Which of the following material has smaller has life

Question # 3

In wilson cloud chamber, the air becomes saturated with:

Question # 4

The chemical properties of an element depends upon the number of

Question # 5

When certain nucleus emits anα particle, its mass number:

Question # 6

A curie represents a very strong source of

Question # 7

When a charged particle passes through matter, it produces ionization, this effect is used in

Question # 8

The nucleus left after the emission of some radiation is called:

Question # 9

In radioactive decay, the new element which is formed due to the disintegration of original element is called

Question # 10

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

Question # 11

The energy is found from Einstein's mass energy relation is called

Question # 12

Hydrogen atom with only one proton in its nucleus, and one electron in its orbit is called

Question # 13

Neutron was disvovered by:

Question # 14

The nucleus/nuclei of hydrogen is/are:

Question # 15

Radioactivity was discovered by:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
2 Radium was discovered by:
A. Becquerel
B. Marie curie
C. Pierre curie
D. Rutherford
3 When certain nucleus emits aβ-particles, is mass number:
A. Remain same
B. Increases by one
C. Decreases by one
D. Decreases by four
4 U-238 present in the natural uranium is about:
A. 59%
B. 0.007%
C. 99%
D. 39%
5 Nuclei that have the same charge number but different mass number are called
A. isotones
B. isomers
C. isotopes
D. isobars
6 Rate of decay is actually described by.
A. Half line
B. Decay constant
C. Mean life
D. Total life
7 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
8 For an atom having atomic number Z and atomic weight A, the charge on the nucleus is
A. A - Z
B. A + Z
C. Z
D. A
9 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
10 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e

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