Nuclear Science mcq questions and answers for competitive exams

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Nuclear Science mcq questions and answers for competitive exams UPSC SSC , SSC CGL, SSC CHSL, upsc Civils , Entrance exams Online test practice online free Quiz, mock practice online
106.
Percentage of natural uranium present in uranium ore found in Jadugoda (Jharkhand) is

a
0.1
b
1
c
3
d
12

107.
The first underground nuclear test was conducted by India at

a
Narora
b
Jaisalmer
c
Pokharan
d
Kalpakkam

108.
How many colors the sunlight spectrum has?

a
1
b
3
c
5
d
7

109.
In an atomic explosion, enormous energy is released which is due to

a
Conversion of mass into energy
b
Conversion of neutrons into protons
c
Conversion of chemical energy into heat energy
d
Conversion of mechanical energy into nuclear energy

110.
Unit of radioactivity is

a
barn
b
curie
c
fermi
d
angstrom

111.
Radioactive substances can be produced readily in

a
A transistor
b
An atomic pile
c
An electron gun
d
A Wilson cloud chamber

112.
Nuclear fuel complex, Hyderabad is engaged in the job of

a
treatment of spent fuel.
b
processing of uranium ore.
c
manufacture of nuclear fuel elements/assemblies .
d
none of these.

113.
Which one is different for the neutral atoms of the isotopes of an element?

a
Atomic numbers
b
Atomic weights
c
Number of protons
d
Number of electrons

114.
Pick out the wrong statement.

a
Positron is heavier than a proton.
b
A, b-ray particle is identical with an electron.
c
The nucleus of a hydrogen atom is identical with a proton.
d
Mass of an electron is about 1/1800th of the lightest nucleus.

115.
Activity is proportional to number of

a
father nuclei
b
decayed nuclei
c
daughter nuclei
d
undecayed nuclei

116.
Nuclides having the same atomic numbers are termed as

a
isobars
b
isomers
c
isotopes
d
isotones

117.
Which of the following ores contains maximum percentage of uranium?

a
Thorium
b
Rescolite
c
Carnotite
d
Pitchblende

118.
A radioactive isotope undergoes decay with respect to time following law.

a
linear
b
logarithmic
c
exponential
d
inverse square

119.
The second underground nuclear test was conducted by India at

a
Narora
b
Pokhran
c
Jaisalmer
d
Kalpakkan

120.
Graphite is used in nuclear reactor as

a
fuel
b
lubricant
c
insulation lining of the reactor.
d
retarder of neutron velocity.

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