Book Store

Download books and chapters from book store.
Currently only available for.
CBSE

NEET Physics : Nuclei

Multiple Choice Questions

111.

Which one of the following is a possible nuclear reaction?

${}_{5}^{10}B + {}_{2}^{4}{He} \to {}_{7}^{13}N + {}_{1}^{1}H$
${}_{11}^{23}{Na} + {}_{1}^{1}H \to {}_{10}^{20}{Ne} + {}_{2}^{4}{He}$
${}_{93}^{239}{Np} \to {}_{94}^{239}{Pu} + β^{-} + \bar{ν}$
${}_{7}^{11}N + {}_{1}^{1}H \to {}_{6}^{12}C + β^{-} + \bar{ν}$

112.

Assertion: Heavy water is a better moderator than normal water.

Reason: Heavy water absorbs neutrons more efficiently than normal water.

If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false

113.

${}_{98}^{238}U$ has 92 protons and 238 nucleons. It decays by emitting an alpha particle and becomes

${}_{92}^{238}U$
${}_{90}^{234}{Th}$
${}_{92}^{235}U$
${}_{93}^{237}{Np}$

114.

The foil bone has a ¹⁴C : ¹²C ratio, which is [ 1/16 ] of that in a living animal bone. If the half-life time of ¹⁴C is 5730 years, then the age of the fossil bone is

11460 years
17190 years
22920 years
45840 years

115.

Calculate power output of ${}_{92}^{235}U$ reactor, if it is takes 30 days to use up 2 kg of fuel, and if each fission gives 185 MeV of useable energy. Avogadro's number = 6 × 10²³ / mol?

56.3 MW
60.3 MW
58.3 MW
54.3 MW

116.

What is the energy of photon whose wavelength is 6840 $\overset{\circ}{A}$ ?

1.81 eV
3.6 eV
$-$ 13.6 eV
12.1 eV

117.

Assertion: ⁹⁴Sr from the radioactive fall out from a nuclear bomb ends up in the bones of human beings through the milk consumed by them. It causes impairment of the production of red blood cells.

Reason: The energetics β-particles emitted in the decay of ⁹⁴Sr damage the bone marrow.

If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false

118.

What is the amount of energy released by deuterium and tritium fusion? [ Given: $M_{{}_{1}^{2}H}$ =2.0141024 u, $M_{{}_{1}^{3}H}$ = 3.0160504 , $M_{{}_{0}^{1}n}$ = 1.0086654 u ]

60.6 eV
12.6 eV
17.6 eV
28.3 eV

119.

The operation of a nuclear reactor is said to be critical, if the multiplication factor ( K ) has a value

120.

Assertion: ⁹⁰Sr from the radioactive fall out from a nuclear bomb ends up in the bones of human beings through the milk consumed by them. It causes impairment of production of red blood cells.

Reason: The energies β-particles emitted in the decay of ⁹⁰Sr damage the bone marrow.

If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false

Do a good deed today
Refer a friend to Zigya

Book Store

Subject

NEET Physics : Nuclei

Multiple Choice Questions