A. Fuel is natural uranium and heavy water acts both as moderator & coolant

B. Coolant water boils in the core of the reactor

D. Use of moderator is not required

A. More atomic number

B. Less atomic weight

D. More atomic weight

A. Uranium

B. Radium

C. Neptunium

A. The nucleus of a hydrogen atom is identical with a proton

C. Mass of an electron is about 1/1800th of the lightest nucleus

D. A, ?-ray particle is identical with an electron

A. 12.73

B. 6.31

D. 99.29

A. Limonite

B. Pitchblende

D. Galena

B. Isomers

C. Isotopes

D. Isobars

B. Rutherford

C. Hahn and Strassmann

D. Plane

A. Zircaloy

B. Molybdenum

C. High carbon steel

A. Radioactive decay

C. Combustion

D. Thermionic emission

A. It is difficult to initiate fusion reaction

B. Quantity of fuel required for initiating fusion reaction is prohibitively high

D. The fuel required (i.e., deuterium & tritium) is scarce

A. Radioactive

B. Chemical

D. All A., B. and C.

B. 29.71

C. 0.71

D. 0.015

A. Accelerating the neutrons

B. None of these

D. Power generation

E. bardment on different materials</strong>

B. Angstrom

C. Barn

D. Fermi

B. Molten sodium cooled

C. Pressurised water

D. Helium cooled

A. Chemical properties

B. Electronic configuration

C. Nuclear charge

A. Uranium-235

B. Uranium-233

C. Plutonium-239

A. Molten sodium as coolant as well as moderator

B. Graphite as moderator

D. Water as coolant

A. 92U236

C. 90U238

D. 90U236

B. Helium

C. None of these

D. Deuterium

A. A

B. A + Z

C. Z

A. Is unpredictable; may increase or decrease

C. Increases

D. Remain same

B. Electrons

C. Protons

D. Neutrons

A. None of these

C. Thorium-233

D. Uranium-238

A. Neutron breeding capability

C. Excellent moderating properties

D. Capability to increase the reaction rate in the core

A. Cold chamber

B. Mass spectrograph

C. Cyclotron

A. Natural uranium

C. Monazite sand

D. Plutonium

A. 0.71

B. 7.54

C. 32.97

A. None of these

C. Power generation on commercial scale

D. Economic power generation

A. Use molten sodium as coolant

C. Convert fertile material to fissile material

D. Use fast neutrons for fission

A. Isotones

C. Isotopes

D. Isobars

A. Uranium

B. Polonium

C. Hafnium

A. 7.54

B. 0.71

D. 32.97

A. 7

B. 0.01

D. 1.2

B. Rescolite

C. Carnotite

D. Pitchblende

A. The ratio of the density of the nucleus to that of the atom is 1012

B. ?-particle is identical with a doubly charged helium ion

C. The mass of deuterium atom is half that of helium atom

B. Lower neutron capture cross-section

C. Non-reactivity to uranium

D. Lower density

A. 92U235

C. None of these

D. 92U234

B. 4

C. 18.6

D. 0

B. Beryllium

C. Graphite

D. Heavy water

B. Absorbs

C. Accelerates

D. Reflects

A. Treatment of spent fuel

B. Processing of uranium ore

C. None of these

A. Slow down the secondary neutrons

C. Absorb the fast neutrons

D. Protect the fuel element from coming in contact with the coolant

A. Enriched uranium

B. Thermal

D. Heavy water moderated

B. Coolant & moderator

C. None of these

D. Fuel & coolant

A. Isostere

B. Isobars

D. Isotopes

A. Chemical

B. Physical

C. None of these

A. Mildly alkaline (pH = 8) water

B. None of these

C. Mildly acidic (pH = 6) water

B. Heterogeneous reactor

C. Breeder reactor

D. Liquid metal (e.g., molten sodium) cooled reactor