191. Nuclear fuel usually used in a Boiling Water Reactor (BWR) is
plutonium
enriched uranium
natural uranium
thorium
✅ The correct answer is option B.
Nuclear Power Engineering MCQs
192. Which one is different for the neutral atoms of the isotopes of an element ?
Atomic weights
Atomic numbers
Number of protons
Number of electrons
✅ The correct answer is option A.
193. ‘Heavy water’ is termed as ‘heavy’ because it is
denser than water.
an oxide of deuterium.
a heavy liquid.
an oxide of heavier isotope of oxygen.
✅ The correct answer is option B.
194. ‘Light water’ used as a coolant in nuclear reactor is nothing but
ordinary water.
mildly acidic (pH = 6) water.
mildly alkaline (pH = 8) water.
none of these.
✅ The correct answer is option A.
195. In the nuclear reaction, 93N239 94Pu239 + ?; the missing particle is a/an
electron
proton
neutron
position
✅ The correct answer is option A.
196. The mass number of an element is not changed, when it emits __________ radiations.
α & β
β & γ
γ & α
α, β, & γ
✅ The correct answer is option B.
197. Which of the following is not used as a nuclear fuel cladding material ?
Zircalloy
Cadmium
Ceramics
Stainless steel
✅ The correct answer is option B.
198. Heavy water has maximum density at __________ °C.
4
11.6
0
18.6
✅ The correct answer is option B.
199. In a pressurised water reactor (PWR), the
fuel is natural uranium and heavy water acts both as moderator & coolant.
coolant water boils in the core of the reactor.
coolant water is pressurised to prevent bulk boiling of water in the core.
use of moderator is not required.
✅ The correct answer is option C.
200. Candu reactor is a __________ nuclcear reactor.
natural uranium fuelled heavy water cooled & moderated
highly enriched uranium (85% U-235) fuelled
homogeneous
fast breeder
✅ The correct answer is option A.