10th Science Chapter-06 Nuclear Physics Creative One Mark Question and Answers Part-02

10th Science Chapter-06 Nuclear Physics Creative One Mark Question and Answers Part-02

01.The phenomenon of nuclear decay with the emission of radiations is called _______

a) alpha decay
b) radioactivity
c) nuclear fission
d) nuclear fusion

Correct answer
radioactivity




02.______________ was named after the planet Uranus.

a) Uranium
b) Platinum
c) Electonics
d) none of these

Correct answer
Uranium



03._________ rays travel with the speed of light

a) x
b) y
c) r
d) k

Correct answer
y

04.Promethium is a radioactive substance with atomic number _____

a) 60
b) 61
c) 62
d) 63

Correct answer
61

05.If the radiation exposure is 100 R, it may cause _________

a) ulcer
b) cancer
c) TB
d) fever

Correct answer
cancer

06.__________ made radioactivity is also known as induced radioactivity and artificial radioactivity.

a) animal
b) man
c) woman
d) none of these

Correct answer
man

07.The safe limit of overall exposure to radiation is given as ______ milli sievert per year.

a) 10
b) 20
c) 30
d) 40

Correct answer
20

08.__________ rays are known as electrons.

a) anode
b) cathode
c) neutrons
d) electrons

Correct answer
cathode

09.Irene Curie and F. Joliot discovered _______ radioactivity.

a) natural
b) artificial
c) radio activity
d) none of these

Correct answer
artificial

10.The minimum mass of a fissile material to sustain chain reaction is called ______

a) subcritical
b) supercritical
c) critical mass
d) atomic mass

Correct answer
critical mass

11.__________ - proton chain reaction is an example of nuclear fusion.

a) nutran
b) nuclear
c) proton
d) electron

Correct answer
proton

12.______________ emitted radiations spontaneously like uranium

a) uranium
b) radium
c) water solution
d) none of these

Correct answer
radium

13.During an alpha decay, the mass number decreases by ______

a) one
b) two
c) three
d) four

Correct answer
four