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.Management Sciences
Category: Nuclear Power Engineering
The atomic mass of an element is fractional, because ______________________?
A. Of uncertainty principle
B. It may have isobars
C. It contains neutrons
D. It may have isotopes
Plutonium________________?
A. Is recovered from spent fuel from thermal nuclear reactor
B. Has much lower melting point (640°C ) compared to thorium (1690°C)
C. Both A. and B.
D. Neither A. nor B.
Sodium melts (at atmospheric pressure) at a temperature of ____________ °C?
A. 58
B. 98
C. 348
D. 588
Pick out the wrong statement?
A. The nucleus of a hydrogen atom is identical with a proton
B. A, β-ray particle is identical with an electron
C. Mass of an electron is about 1/1800th of the lightest nucleus
D. Positron is heavier than a proton
Isotopes of an element have different_____________________?
A. Mass number
B. Electronic configuration
C. Nuclear charge
D. Chemical properties
Solar energy results from _______________ reaction?
A. Fission
B. Combustion
C. Thermonuclear
D. None of these
Which of the following ores contains maximum percentage of uranium ?
A. Carnotite
B. Thorium
C. Rescolite
D. Pitchblende
Isotopes of an element have different_________________?
A. Mass number
B. Electronic configuration
C. Nuclear charge
D. Chemical properties
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