ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Physics ECAT Pre Engineering Chapter 21 Nuclear Physics

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Question # 1

Alfa particles are

Question # 2

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

Question # 3

An alpha particle has a charge of

Question # 4

β-particles are easily deflected by collisions than heavy

Question # 5

The number of isotopes of hydrogen are

Question # 6

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

Question # 7

Fraction of the decaying atoms per unit time is called

Question # 8

Neutron was discovered by

Question # 9

For Protium, the mass defect is:

Question # 10

Radioactivity

Question # 11

There is present in paraffin a large amount of:

Question # 12

In his experiment on nuclear reactions, Rutherford bombardedα particles on:

Question # 13

After alpha decay the atomic number of the atom

Question # 14

Examples of moderators used in a fission reactor is/are:

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
2 The energy is found from Einstein's mass energy relation is called
A. binding energy of electron
B. binding energy of proton
C. binding energy of neutron
D. binding energy of nucleus
3 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
4 If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be
A. Equal to 1
B. Less than 1
C. Greater than 1
D. Infinity
5 Neutron was suggested to be in the nucleus by:
A. Rutherford in 1920
B. Bohar in 1913
C. Dirac in 1928
D. Anderson in 1932
6 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
7 The most abundant isotope of neon is
A. neon-20
B. neon-21
C. neon-22
D. neon-23
8 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
9 Examples of moderators used in a fission reactor is/are:
A. Water
B. Heavy water
C. Carbon
D. Hydrocarbon
10 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector

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