Nuclear Power Engineering MCQ Questions & Answers

71

Pick out the wrong statement.

A) The disintegration rate of a radioactive substance can not be increased by heating it B) Electrons have negligible mass and unit negative change C) Deuterium atom has one proton and two neutrons in its nucleus D) Cadmium is capable of absorbing neutrons

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Answer & Solution

Answer: Option C

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72

Plutonium

A) Is recovered from spent fuel from thermal nuclear reactor B) Has much lower melting point (640°C ) compared to thorium (1690°C) C) Both A & B D) Neither A nor B

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Answer & Solution

Answer: Option C

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73

Pick out the wrong statement.

A) Α-particle emission from a radioactive element makes it electrically negative B) Β-particle emission from a radioactive element makes it electrically positive C) A radioactive element having a half life period of 20 years will completely disintegrated in 40 years D) The disintegration constant of a radioactive isotope is independent of pressure, temperature or concentration

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Answer & Solution

Answer: Option C

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74

Positron is a/an

A) Nucleus having two protons B) Helium nucleus C) Electron with positive charge D) Nucleus with one proton and one neutron

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Answer & Solution

Answer: Option C

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75

Which of the following types of nuclear reactors is most prone to radioactive hazards?

A) Pressurised water reactor B) Gas cooled reactor C) Molten sodium cooled reactor D) Boiling water reactor

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Answer & Solution

Answer: Option D

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76

The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron?

A) 159 B) 1837 C) 2537 D) 10000

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Answer & Solution

Answer: Option B

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77

Net efficiency of ordinary light water cooled nuclear reactor is about __________ percent.

A) 32 B) 52 C) 72 D) 88

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Answer & Solution

Answer: Option A

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78

Commercial power generation from fusion reactor is not yet possible, because

A) It is difficult to control fusion reaction B) The fuel required (e.g. deuterium and tritium) is scarce C) It is difficult to initiate fusion reaction D) Quantity of fuel required for initiating fusion reaction is prohibitively high

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Answer & Solution

Answer: Option A

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79

Fast breeder reactors are most usable in India, because of our largest __________ deposits.

A) Thorium B) Plutonium C) Uranium D) None of these

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Answer & Solution

Answer: Option A

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80

Pick out the wrong statement.

A) The ratio of the density of the 'nucleus' to that of the 'atom' is 10¹² B) Α-particle is identical with a doubly charged helium ion C) The mass of deuterium atom is half that of helium atom D) Gamma rays are high energy electrons

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Answer & Solution

Answer: Option D

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Nuclear Power Engineering MCQ Questions & Answers | Chemical Engineering