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

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

Question # 2

Charge on proton is

Question # 3

The number of protons inside a nucleus is called

Question # 4

Binding energy per nucleus is

Question # 5

A mass spectrograph sort out

Question # 6

Different radioactive material have

Question # 7

Alfa , beta and gamma rays are emitted from a radio-active substance

Question # 8

A pair of quark and antiquark makes a:

Question # 9

The penetration power ofβ-particle is

Question # 10

Nucleus consists of

Question # 11

Structure of the nucleus was explained by

Question # 12

Nuclei that have the same charge number but different mass number are called

Question # 13

For an atom having atomic number Z and atomic weight A, the charge on the nucleus is

Question # 14

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

Question # 15

Neutrons are

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these
2 The mass of the nucleus is always less than the total man of the protons and neutron that make up the nucleus. The difference of the two masses is called
A. nuclear fission
B. nuclear fusion
C. man defect
D. radioactivity
3 The rate of decay of radioactive substance
A. is constant
B. decrease exponentially with time
C. varies inversely as time
D. decreases linearly with time
4 Neutron was discovered by
A. Curie
B. Roentgen
C. Chadwick
D. Rutherford
5 Beta particles are
A. hydrogen nuclei
B. helium nuclei
C. electrons
D. photons
6 For Protium, the mass defect is:
A. Infinite
B. Zero
C. Very large
D. A few grams
7 The time required for a radioactive material to decrease in active by one half is called
A. half time
B. half life
C. disintegration time
D. mean life
8 When a nucleus emits an alpha particle, it atomic mass decreased by
A. 2
B. 1
C. 4
D. 3
9 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
10 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives

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  • alishba rasheed

    alishba rasheed

    03 Mar 2018

    easy mcqs

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