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

00:00
Question # 1

Mass of proton is

Question # 2

The half lie of radium-226 is

Question # 3

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 # 4

Charge on proton is

Question # 5

When certain nucleus emits anα particle, its mass number:

Question # 6

The chemical properties of all the isotopes of an elements are

Question # 7

Neutron was suggested to be in the nucleus by:

Question # 8

Marie curie and Pierre curie discovered:

Question # 9

The number of isotopes of hydrogen are

Question # 10

The energy acquired by a mass of 1g moving with the speed of light is

Question # 11

The diameter of an atom is of the order

Question # 12

The rate of decay of radioactive substance

Question # 13

Electrons are

Question # 14

U-238 present in the natural uranium is about:

Question # 15

Binding energy per nucleus is

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The half life of uranium-238 is
A. 6.2 x 109years
B. 4.5 x 109days
C. 4.5 x 109years
D. 1.3 x 106years
2 An alpha particle has a charge of
A. +2e
B. -2e
C. -e
D. +3e
3 There is present in paraffin a large amount of:
A. Nitrogen
B. Hydrogen
C. Carbon
D. Baryllium
4 The nucleus left after the emission of some radiation is called:
A. Parent nucleus
B. Daughter necleus
C. Mother necleus
D. Any of these
5 Electrons are
A. positive charged
B. negatively charged
C. massless
D. neutral
6 Maric Curie and Pieree Curie discovered two new radioactive elements, which are called
A. polonium uranium
B. uranium and radium
C. polonium and radium
D. none of these
7 During the nuclear changes, the law/s of conservation that hold/s are that of:
A. Charge
B. energy
C. Momentum
D. Mass
8 A mass spectrograph sort out
A. molecules
B. atoms
C. elements
D. isotopes
9 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
10 According to Rutherford atomic model, the positive charge in an atom
A. is concentrated at its centre
B. is in the form of positive electron at same distance from its centre
C. is spread uniformly through its volume
D. none of these

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  • alishba rasheed

    alishba rasheed

    03 Mar 2018

    easy mcqs

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