- (A) It decreases in a period
- (B) It decreases in a group
- (C) It is measured in KJ/mol
- (D) It is absorption of energy
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Quantum number which represent shape of orbital of electron is called?
- (A) Magnetic Quantum Number
- (B) Azimuthal Quantum Number
- (C) Principal Quantum Number
- (D) None of the above
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Atomic arbital needs at least __ of volume of space to find an electron.
- (A) 85%
- (B) 87%
- (C) 95%
- (D) 98%
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Bracket series is found in?
- (A) Infrared Region
- (B) Visible Region
- (C) Ultraviolet Region
- (D) None of the above
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Which radiations emit when slow moving neutrons hit the copper metal?
- (A) Gamma
- (B) Delta
- (C) Alpha
- (D) Beta
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Charge on electron was discovered by?
- (A) Rutherford
- (B) Stonely
- (C) Millikan
- (D) None of the above
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Which neutrons are more effective for fission process?
- (A) Fast neutrons
- (B) Slow neutrons
- (C) Both A & B
- (D) None of the above
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Speed of fast neutron is __ energy.
- (A) 1.1 Mev
- (B) 1.2 Mev
- (C) 1.3 Mev
- (D) 1.4 Mev
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Speed of slow neutron is below __ energy.
- (A) 0.5 eV
- (B) 1 eV
- (C) 1.5 eV
- (D) 2 eV