Complete the reaction : He 2 3 + H 1 2 → He 2 4 + ____ + Energy

Nuclear fusion is the process where the nuclei of two light atoms combine to form a new nucleus with release of energy. The complete reaction can be written as He 2 3 + H 1 2 → He 2 4 + H 1 1 + Energy.

A nuclear reaction is represented by the equation: H 1 2 + H 1 2 → H 2 3 e + x c + E What type of nuclear bomb is based on similar reactions?

The name of the process represented by the given equation is Nuclear fusion. In a fusion reaction when two smaller nuclei are given very high temperature and pressure they combine to form a bigger nucleus with the release of energy. Hydrogen bomb is based on the nuclear fusion reaction.

How much is 4 . 5 × 10 14 J in MeV ? (Speed of light, c = 3 × 10 8 m s )

1 . 602 × 10 - 13 J = 1 MeV ∴ 1 J = 1 1 . 602 × 10 - 13 MeV ∴ 4 . 5 × 10 14 J = 4 . 5 × 10 14 × 1 1 . 602 × 10 - 13 MeV = 2 . 8 × 10 27 MeV .

HARD

Earn 100

Differentiate between nuclear fission and nuclear fusion.

Important Questions on Thermionic Emission and Radioactivity

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

What do you understand by the term nuclear fusion?

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

The energy released when

3 g

of material is completely converted into energy during a nuclear reaction is (given, speed of light =

3 \times 10^{8} m / s

MEDIUM

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

Why is a nuclear fusion reaction called a thermonuclear reaction?

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

Nuclear power plants use nuclear fission reaction to produce electricity. What is the advantage of producing electricity by fusion reaction?

MEDIUM

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

What do you mean by Nuclear Fission? Explain with example.

MEDIUM

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

For a nuclear reactor

48 KJ

of energy is produced per minute. If the energy released per fission is

3.2 \times 10^{- 11} J

then the number of fissions which would be taking place in a reactor per second is

MEDIUM

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

Complete the reaction :
${}^{3}{He}_{2} + {}^{2}H_{1} \to {}^{4}{He}_{2} +____+$ Energy

MEDIUM

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

Write any two hazards of nuclear power generation.

MEDIUM

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

What do you mean by Nuclear fusion? Explain with example.

MEDIUM

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

The amount of material that releases

4.5 \times 10^{14} J

of energy when it is completely converted into energy during a nuclear reaction. [Given speed of light =

3 \times 10^{8} m / s

]

MEDIUM

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

Mention two hazards of nuclear power reactor.

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

Differentiate between nuclear fusion and nuclear fission.

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

A nuclear reaction is represented by the equation:

{}_{1}^{2}H + {}_{1}^{2}H \to {}_{2}^{3}H e + x c + E

What type of nuclear bomb is based on similar reactions?

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

Calculate the energy released in

joules

when

5 g

of a material is completely converted into energy during a nuclear reaction.

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

Which product of the nuclear fission of uranium-

235

is utilised to cause further fission of its nuclei?

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

The mass numbers of four elements

A, B, C

and

D

are

2, 20, 135

and

235

respectively. Which one of them will be most suitable to make: an atom bomb?

MEDIUM

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

Give scientific reason: It is absolutely necessary to control the fission reaction in nuclear power plants.

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

How much is

4.5 \times 10^{14} J

MeV

? (Speed of light,

c = 3 \times 10^{8} \frac{m}{s}

)

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

A nuclear power plant is working normally. What would you do if the reactor core suddenly got too hot?

EASY

Science>Physics>Thermionic Emission and Radioactivity>Nuclear Fission and Fusion

A nuclear reactor has half the length of all its control rods inserted in graphite. What must be done so that the reactor produces more heat? Explain your answer.

Differentiate between nuclear fission and nuclear fusion.

Important Questions on Thermionic Emission and Radioactivity

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