ECAT Pre Engineering Physics Chapter 21 MCQ Test With Answer

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

Try The 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

Nucleus consists of

Question # 2

The diameter of an atom is of the order

Question # 3

The chemical behaviour of an atom is determined by

Question # 4

An alpha particle has a charge of

Question # 5

Referring to the above figure, we can say that of all the elements, the most stable element is

Question # 6

1 amu is equal to.

Question # 7

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

Question # 8

A pair of quark and antiquark makes a:

Question # 9

The figure 1.007276μ shows the mass of an:

Question # 10

There is present in paraffin a large amount of:

Question # 11

If 'V' is the relativistic speed and 'C' is the speed of light then according to Einstien the factor V/C must always be

Question # 12

The reciprocal of decay constant λ of a radioactive material is:

Question # 13

The half lie of radium-226 is

Question # 14

Mass of neutron is

Question # 15

Nucleon means:

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Neutron was discovered in
A. 1915
B. 1920
C. 1925
D. 1932
2 In radio-active decay, the original element which disintegrate to another element is called
A. element
B. daughter element
C. parent element
D. none of these
3 The chemical behaviour of an atom is determined by
A. binding energy
B. atomic number
C. mass number
D. number of isotopes
4 How many isotopes of helium are present?
A. 1
B. 2
C. 3
D. 4
5 Which of these is not a radiation detector
A. Wilson cloud chamber
B. cyclotron acceleration
C. Geiger Miller counter
D. solid state detector
6 The half life of radioactive substances depends upon
A. amount of substance
B. energy of substance
C. state of substance
D. temperature of substance
7 When radioactive nucleus emits aβ-particle, the proton-neutron ratio
A. decrease
B. increase
C. same
D. none of these
8 Nucleus of a hydrogen atom may contain:
A. One neutron only
B. Two protons and one neutron
C. Two protons and two neutrons
D. Aany of above
9 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
10 Mass of proton is
A. 1.67 x 10-27kg
B. 1.67 x 10-31kg
C. 1.66 x 10-34kg
D. 1.67 x 10-17kg

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  • alishba rasheed

    alishba rasheed

    03 Mar 2018

    easy mcqs

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