ENGINEERING MATERIALS QUIZ

'Heavy water' is termed as 'heavy' because it is

A heavy liquid

Denser than water

An oxide of heavier isotope of oxygen

An oxide of deuterium

TRUE ANSWER : ?
YOUR ANSWER : ?

A thermal nuclear reactor compared to a fast breeder reactor

Requires less fuel to run at the same power level

Gives higher power density

Uses faster neutrons for fission

Uses slower neutrons for fission

TRUE ANSWER : ?
YOUR ANSWER : ?

The sum of masses of two nuclei produced in nuclear fission compared to the mass of original nucleus is

More

Much more

Same

Less

TRUE ANSWER : ?
YOUR ANSWER : ?

The velocity of thermal (slow) neutrons triggering nuclear fission reaction (having energy equal to 0.025 eV) is about __________ metres/second.

3300

4400

1100

2200

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following undergoes fission reaction easily?

U-235

U-238

Th-232

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The decay product of tritium (a beta emitter) is

Hydrogen

Lithium

Deuterium

Helium

TRUE ANSWER : ?
YOUR ANSWER : ?

The 92U238 emits an a-particle. The product is

90U234

90U238

92U236

90U236

TRUE ANSWER : ?
YOUR ANSWER : ?

A radioactive substance does not emit

Α-ray

Β-ray

Proton

Position

TRUE ANSWER : ?
YOUR ANSWER : ?

The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be __________ of its original weight.

1/8

1/16

1/4

1/2

TRUE ANSWER : ?
YOUR ANSWER : ?

Fuel for a fast breeder reactor is

Uranium

Radium

Plutonium

Neptunium

TRUE ANSWER : ?
YOUR ANSWER : ?

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