Author name: Admin

fissile atoms are evenly distributed throughout the mass of nuclear reactor.

same substance (e.g. heavy water) is used as moderator & coolant.

the fuel and the moderator is mixed to form a homogeneous material.

all (a), (b) and (c).

equal to

less than

more than

either more or less

radioactive

physical

chemical

all (a), (b) and (c)

slow down the secondary neutrons.

absorb the secondary neutrons.

control the chain reaction.

none of these.

20

200

1000

2000

0.71

6.31

99.29

12.73

is a better neutron moderator as well.

requires comparatively smaller pumps and heat exchanger for a given heat transfer rate.

has a better heat transfer characteristics, and it can be pressurised to attain a high temperature.

all (a), (b) and (c).

coolant water is allowed to boil in the core of the reactor.

coolant water, after being heated in the reactor core, generates steam in a boiler.

pressurised water is pumped into the core.

fuel and the coolant are thoroughly mixed to form a homogeneous solution.

Atomic weights

Atomic numbers

Number of protons

Number of electrons

ordinary water.

mildly acidic (pH = 6) water.

mildly alkaline (pH = 8) water.

none of these.