3799. Which of the following is not used as a nuclear fuel cladding material ?
Zircalloy
Cadmium
Ceramics
Stainless steel
✅ The correct answer is option B.
3805. 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.
3810. Heavy water is used as a moderator in a
pressurised water reactor (PWR).
boiling water reactor (BWR).
Candu reactor.
molten sodium cooled reactor.
✅ The correct answer is option C.
3816. U-235 content in enriched uranium, that is normally used in power reactors (e.g., at Tarapur atomic power plant), is about __________ percent.
85
50
3
97
✅ The correct answer is option C.
3820. A radioactive substance does not emit
α-ray
proton
position
β-ray
✅ The correct answer is option B.
3786. In nuclear reactions, __________ number is conserved.
mass
atomic
both (a) & (b)
neither (a) nor (b)
✅ The correct answer is option C.
3791. The half life period of a radioactive substance is best determined by counting the number of alpha particles emitted per second in a Geiger Muller counter from its known quantity. If the half life period of a radioactive substance is one month, then
3/4th of it will disintegrate in two months.
it will completely disintegrate in two months.
it will completely disintegrate in four months.
l/8th of it will remain intact at the end of four months.
✅ The correct answer is option B.
3796. Which is used as a coolant in nuclear reactor due to its high capture cross-section ?
H2
N2
He
CO2
✅ The correct answer is option A.
3800. The atomic mass of an element is fractional, because
of uncertainty principle.
it may have isobars.
it contains neutrons.
it may have isotopes.
✅ The correct answer is option D.
3806. Fast breeder Test Reactor (FBTR) is located at
Kalpakkam (near Madras).
Kota (in Rajasthan).
BARC (Trombay).
Tarapur (in Maharashtra).
✅ The correct answer is option A.