Unit of radioactivity is__________________?
Unit of radioactivity is__________________?
A. Barn
B. Fermi
C. Angstrom
D. Curie
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The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?
The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element ?A. A + Z
B. A – Z
C. A
D. ZWhich is not a fissile nuclear material ?
Which is not a fissile nuclear material ?A. U-233
B. U-235
C. U-238
D. Pu-239The function of moderators in nuclear reactor is to _________________?
The function of moderators in nuclear reactor is to _________________?A. Slow down the secondary neutrons
B. Absorb the secondary neutrons
C. Control the chain reaction
D. None of theseWhen the difference between mass number and atomic number of atoms of two or more elements are same, the atoms are termed as____________________?
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. Isobars
D. IsotonesIn a homogeneous nuclear reactor, the _____________ are mixed together?
In a homogeneous nuclear reactor, the _____________ are mixed together?A. Fuel & coolant
B. Fuel & moderator
C. Coolant & moderator
D. None of theseIsotopes of an element have different_____________________?
Isotopes of an element have different_____________________?A. Mass number
B. Electronic configuration
C. Nuclear charge
D. Chemical properties