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Hydrogen bomb is based on the principle of

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Important Questions on Nuclear Chemistry

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

In nuclear transmutation

_{8} O^{16} {(A, B)}_{7} N^{13}

A

and

B

are respectively

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

The equation

4_{1}^{1} H^{+} \to {}_{2}^{4}{He}^{2 +} + 2 e^{- 1} + 26 MeV

represents.

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Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

In the nuclear reaction

{}_{13}{Al}^{27} + {}_{2}{He}^{4} ⟶ {}_{14}X^{30} + {}_{1}H^{1}, X

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Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

An electron, a doubly ionized helium ion

({He}^{+ +})

and proton are having the same kinetic energy. The relation between their respective de-Broglie wavelength

λ_{e}, λ_{{He}^{+ +}}

and

λ_{p}

is :

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

In the radioactive disintegration series

_{90}^{232} T h \to_{82}^{208} P b,

involving

α

and

β

decay, the total number of

α

and

β

particles emitted are

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The Binding energy per nucleon of

{}_{3}^{7}{L i}

and

{}_{2}^{4}{H e}

nucleon are

5.60 M e V

and

7.06 M eV

, respectively. In the nuclear reaction

_{3}^{7} L i +_{1}^{1} H \to_{2}^{4} H e +_{2}^{4} H e + Q

, the value of energy

Q

released is

MEDIUM

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

{}_{2}^{4}{H e} + {}_{4}^{9}{B e} \to {}_{0}^{1}n + ?

The missing ion in the above nuclear reaction is

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Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

If the nucleons of a nucleus are separated far apart from each other, the sum of masses of all these nucleons is larger than the mass of the nucleus.

Calculate the energy released if ${}^{238}U$ nucleus emits an $α -$ particle.

Given:

Atomic mass of $_{}^{238} U = 238.0508 u$

Atomic mass of $_{}^{234} T h = 234.04363 u$

Atomic mass of alpha-particle $= 4.00260 u and 1 u = 931 \frac{M e V}{c^{2}}$

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Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

Hydrogen bomb is based on the principle of

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Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

Which of the following is a fusion reaction?

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A neutron is absorbed by a $_{3} L i^{6}$ nucleus with subsequent emission of an alpha particle. Write the corresponding nuclear reaction. Calculate the energy released in this reaction.

Given that $m (x_{6} L i^{6}) = 6.015126 a . m . u .;$

$m (x_{2} H e^{4}) = 4.002604 a . m . u .;$

$m_{n} = 1.008665 a . m . u .;$

$m (x_{1} H^{3}) = 3.016049 a . m . u .$

HARD

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

In fission of $U - 235$ , the percentage of mass converted into energy is about

[Consider reaction: ${}_{92}^{235}U + {}_{0}^{1}n \to {}_{56}^{141}{Ba} + {}_{36}^{92}{Kr} + {}_{0}^{3}n + 200 MeV$ and the energy equivalent of $1 amu = 931 MeV$ ]

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

Which of the following is fusion process?

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

The binding energy per nucleon for deuteron and helium are 1.1MeV and 7.0MeV. The energy released when two deuterons fuse to form a helium nucleus is

HARD

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

A radioactive element X has atomic number Z and atomic mass number A. It decays by the emission of an alpha particle and a gamma ray. The new element is

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Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

If in a nuclear fusion process, the masses of the fusing nuclei are

m_{1}

and

m_{2}

and the mass of the resultant nucleus is

m_{3}

, then

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

Which one of the following nuclear reactions is a source of energy in the sun

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Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

In the fusion reaction

{}_{1}^{2}H + {}_{1}^{2}H \to {}_{2}^{3}{He} + {}_{0}^{1}n,

the masses of deuteron, helium and neutron expressed in

amu

are

2.015, 3.017

and

1.009,

respectively. If

1 kg

of deuterium undergoes complete fusion, find the amount of total energy released.

(1 amu = 931 .5 MeV) .

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

In the nuclear fusion reaction,

_{1}^{2} H +_{1}^{3} H \to_{2}^{4} He + n

, given that the magnitude of repulsive potential energy between the two nuclei is approximately

7 .7 \times 10^{- 14} J

. The temperature at which the gases must be heated to initiate the reaction is nearly

[

Boltzmann's constant

k = 1 {.38\times10}^{- 23} J K^{- 1}

]

EASY

Chemistry>Physical Chemistry>Nuclear Chemistry>Applications of Radioactivity

Nuclear fusion reactions happens spontaneously in _____.

Hydrogen bomb is based on the principle of

Important Questions on Nuclear Chemistry

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