Main source of ______________ is monazite sand? A. Uranium B. Polonium C. HafniumD. Thorium

Research reactors are normally meant for_____________________? A. Producing high neutron flux 1012-1013 neutrons/cm2, sec and studying the effect of neutron bombardment on different materials B. Accelerating the neutrons C. Power generation D. None of these

Artificially produced radioactive isotopes are used for____________________? A. Power generationB. Treatment of certain diseases C. Initiating nuclear fission and fusion D. All A., B. and C.

Which one is different for the neutral atoms of the isotopes of an element ? A. Atomic weights B. Atomic numbers C. Number of protons D. Number of electrons

Uranium is recovered from its ore (pitchblende) by________________? A. Froth floatation techniqueB. Leaching with sulphuric acid C. Smelting in a furnace D. Dissolving in water

Which of the following is not an ore of uranium ? A. PitchblendeB. Kyanite C. Carnotite D. Rescolite

“Critical mass” is the minimum mass of nuclear fissile material required for the_______________________? A. Sustainment of chain reaction B. Power generation on commercial scale C. Economic power generation D. None of these

When the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as____________________? A. Isomers B. Isotopes C. IsobarsD. Isotones

Nuclear fuel generally used in reactors is uranium oxide instead of uranium, because the former has higher _____________________? A. Melting point, hence can be subjected to higher temperature B. Density; hence core volume for a given power output would be…

Radioactivity of an isotope is expressed in______________________? A. Barn B. MeVC. Curie D. Ergs