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

For an atom having atomic number Z and atomic weight A, the number of electron in an atoms

Question # 2

The nuclei of an element having the same charge number but different mass numbers are called:

Question # 3

Mass of neutron is

Question # 4

Mass of proton is of order of

Question # 5

A curie represents a very strong source of

Question # 6

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

Question # 7

γ-rays behave like a particle because they explain the

Question # 8

The most abundant isotope of neon is

Question # 9

After alpha decay the atomic number of the atom

Question # 10

Structure of the nucleus was explained by

Question # 11

The half life of uranium-238 is

Question # 12

Different radioactive material have

Question # 13

The nucleus/nuclei of hydrogen is/are:

Question # 14

Referring to the above figure, the binding energy per nucleon increases upto mass number equal to:

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Alfa particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
2 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
3 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
4 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
5 Charge on neutron is
A. 1.6 x 10-19C
B. zero
C. -1.6 x 10-19C
D. 1.2 x 10-19C
6 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
7 Proton was discovered by Rutherford in
A. 1915
B. 1906
C. 1910
D. 1920
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 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
10 The total charge of any nucleus is given as
A. Ze2
B. Z2e
C. Z/e
D. Ze

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