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.Management Sciences
Category: Atomic Structure
Colour of fluorescene produced by cathode rays depends upon________________?
0
A. Temperature
B. Pressure
C. Volume
D. Composition of glass
Neutrons moving with an energy of 1.2 MeV are called_______________?
A. Fast neutrons
B. Slow neutrons
C. Moderate neutrons
D. All are possible
The value of e/m ratio of electron is________________?
A. 6.02 x 1023 C/kg
B. 1.7588 x 1020 C/kg
C. 9.1095 x 10-31 C/kg
D. 1.7588 x 1011 C/kg
The correct electronic configuration of Cu is ___________________?
A. [Ar]4s1
B. [Ar]4s2
C. [Ar]3d104s1
D. [Ar]3d94s2
_______________ can expel proteons from paraffins ?
A. Electron
B. Positron
C. Neutron
D. None of above has such capability
Rutherfords planet like structure was defective and unsatisfactory because_________________?
A. Moving e- accelerate towards the nucleus
B. Continuous spectrum
C. behavior of electron remain unexplained
D. all
Increase in atomic number is observed during_________________?
A. Alpha emission
B. Beta emission
C. Both A & B
D. Radioactivity
Pressure in gas discharge tube was kept________________?
A. 10 torr
B. 1 torr
C. 0.1 torr
D. 0.01 torr
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