Home
Current Affairs January 2024

What is the correct answer?

4

In a fission process, maximum percentage of energy is released as

A. Kinetic energy of neutrons

B. Kinetic energy of fission products

C. Instantaneous release of gamma rays

D. Gradual radioactive decay of fission products

Correct Answer :

B. Kinetic energy of fission products


Related Questions

What is the correct answer?

4

The process by which a heavy nucleus is spitted into two light nuclei is known as

A. Splitting

B. Fission

C. Fusion

D. Disintegration

What is the correct answer?

4

Moderator in nuclear plants is used to

A. Reduce temperature

B. Extract heat from nuclear reaction

C. Control the reaction

D. Cause collision with the fast moving neutrons to reduce their speed

What is the correct answer?

4

The efficiency of a nuclear power plant in comparison to conventional and nuclear consideration is

A. Higher cost of nuclear fuel

B. High initial cost

C. High heat rejection in condenser

D. Lower temperature and pressure conditions

What is the correct answer?

4

Electron volt is the unit of

A. Atomic power

B. Energy

C. Voltage

D. Radio activity

What is the correct answer?

4

The following present serious difficulty in designing reactor shield

A. Alpha particles

B. Beta particles

C. Thermal neutrons

D. Fast neutrons and gamma rays

What is the correct answer?

4

Which is not identical for an atom and an isotope?

A. Mass number

B. Atomic number

C. Chemical properties

D. Position in periodic table

What is the correct answer?

4

The fast breeder reactor uses the following moderator

A. Demineralised water

B. Carbon dioxide

C. Heavy water

D. No moderator is used

What is the correct answer?

4

Reactors designed for propulsion applications are designed for

A. Natural uranium

B. Enriched uranium

C. Pure uranium

D. Any type of uranium

What is the correct answer?

4

One gram of uranium will produce energy equivalent to approximately

A. 1 tonne of high grade coal

B. 4.5 tonnes of high grade coal

C. 10 tonnes of high grade coal

D. 100 tonnes of high grade coal

What is the correct answer?

4

The primary fuel used in nuclear power plants is

A. U₂₃₅

B. U₂₃₈

C. Pu₂₃₉

D. Pu₂₃₃

What is the correct answer?

4

Solid fuel for nuclear reactions may be fabricated into various small shapes such as

A. Plates

B. Pallets

C. Pins

D. Any one of the above

What is the correct answer?

4

In nuclear fission

A. The original elements change into completely different elements

B. The electrons of the element change

C. The molecules rearrange themselves to form other molecules

D. None of the above

What is the correct answer?

4

The energy produced by a thermal reactor of same size as a breeder reactor is

A. Almost same

B. Slightly more

C. Slightly less

D. Much less

What is the correct answer?

4

U235 will undergo fission by

A. High energy (fast) neutrons alone

B. Low energy (slow) neutrons alone

C. Either fast or slow neutrons

D. Medium energy neutrons

What is the correct answer?

4

Which of the following particles is the lightest?

A. Nucleus

B. Electron

C. Proton

D. Meson

What is the correct answer?

4

Where reactor operation is designed with fast neutrons such as in reactors using highly enriched fuel, the moderator used is

A. Heavy water

B. Graphite

C. Carbon dioxide

D. No moderator is needed

What is the correct answer?

4

Ideally the neutron flux in reactor should be

A. Maximum in centre and zero at side

B. Maximum at side and zero in canter

C. Uniform throughout

D. Zero throughout

What is the correct answer?

4

The energy released during the fission of one atom of Uranium 235 in million electron volts is about

A. 100

B. 200

C. 300

D. 400

What is the correct answer?

4

A boiling water reactor uses following as fuel

A. Enriched uranium

B. Plutonium

C. Thorium

D. U

What is the correct answer?

4

In nuclear fission each neutron that causes fission releases

A. No new neutron

B. At least one new neutron

C. One new neutron

D. More than one new neutron

What is the correct answer?

4

Each fission of U₂₃₅ produces following number of fast neutrons per fission

A. 1 neutron

B. 3 neutrons

C. 1, 2 neutrons

D. 2 neutrons

What is the correct answer?

4

Plutonium is produced

A. As basic raw material

B. By neutron irradiation of Uz

C. By neutron irradiation of thorium

D. Artificially

What is the correct answer?

4

The commonly used material for shielding is

A. Lead or concrete

B. Lead and tin

C. Graphite or cadmium

D. Thick galvanised sheets

What is the correct answer?

4

A nuclear unit becoming critical means

A. It is generating power to rated capacity

B. It is capable of generating much more than rated capacity

C. There is danger of nuclear spread

D. Chain reaction that causes automatic splitting of the fuel nuclei has been established

What is the correct answer?

4

When a reactor becomes critical, then the production of neutrons is

A. Infinite

B. Zero

C. Exactly balanced by the loss of neutrons through leakage

D. Initiated

What is the correct answer?

4

The main interest of shielding in nuclear reactor is protection against

A. X-rays

B. Infrared rays

C. Neutrons and gamma rays

D. Electrons

What is the correct answer?

4

Reflector in nuclear power plants _________ neutron leakage.

A. Increases

B. Decreases

C. Have no effect on

D. None of these

What is the correct answer?

4

The coolant used in boiling water reactor is

A. CO2

B. Pressurised water

C. Mixture of water and steam

D. Liquid metal

What is the correct answer?

4

The size of the reactor is said to be critical when

A. Chain reaction can be initiated

B. It becomes uncontrollable

C. It explodes

D. It produces no power

What is the correct answer?

4

Half life of a radioactive isotope corresponds to the time required for half of the following to decay

A. Electrons

B. Protons

C. Neutrons

D. Atom