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

The isotope/s of hydrogen is /are:

Question # 2

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

Question # 3

The number if neutrons in the nucleus of 92U235are

Question # 4

Neutron was disvovered by:

Question # 5

Nucleus consists of

Question # 6

The figure 1.007276μ shows the mass of an:

Question # 7

Rate of decay is actually described by.

Question # 8

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

Question # 9

A pair of quark and antiquark makes a:

Question # 10

Radium was discovered by:

Question # 11

Proton was discovered by Rutherford in

Question # 12

Alfa particles are

Question # 13

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

Question # 14

The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains

Question # 15

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

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ECAT Physics Chapter 21 Important MCQ's

Sr.# Question Answer
1 Curie is a unit of
A. reluctance
B. resistivity
C. binding energy
D. radioactivity
2 Phenomenon of radioactivity is due to disintegration of
A. nucleus
B. neutron
C. proton
D. molecule
3 Charge on proton is
A. 1.59 x 10-9C
B. 1.59 x 10-7C
C. -1.59 x 10-19 C
D. 1.59 x 10-19C
4 Different radioactive material have
A. same half lives
B. different half lives
C. same mean lives
D. same total lives
5 The reciprocal of decay constant λ of a radioactive material is:
A. Frequency
B. Half life
C. Year
D. Mean life
6 The nucleous of uranium -235 differs from a nucleous of a uranium -238 in that the later contains
A. 3 more neutrons
B. 3 more electrons
C. 3 more protons
D. 3 more ions
7 Gamma rays consist of steam of
A. electron
B. proton
C. photons
D. all of these
8 The number if neutrons in the nucleus of 92U235are
A. Infinite
B. 92
C. 235
D. 143
9 Which are not the elementary particles?
A. Photons
B. Leptons
C. Hadrons
D. Quarks
10 The chemical properties of all the isotopes of an elements are
A. same
B. different
C. slightly different
D. none of these

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