Table of Contents
Chemistry Mcqs Online Test Preparation With Answers
Positive rays produce flashes on _.
A. Platinum plate
B. Gold Plate
C. Zinc sulphide plate
D. Silver plate
Which scientist named anode rays as proton?
A. Thomos
B. Stonely
C. J.Perrin
D. Rutherford
Which scientist named cathode rays as electrons _.
A. J.J. Thomson
B. Stonely
C. J Perrin
D. None of the above
e/m for positive ray is _ e/m for negative ray.
A. larger than
B. Smaller than
C. equal to
D. None of the above
Tha mass of electron is __ times less than mass of proton.
A. 1836
B. 1837
C. 1838
D. 1839
Which type of cathode is used to focus cathode rays on a platinum foil?
A. Concave cathode
B. Convex Cathode
C. Straight Cathode
D. None of the above
Free neutron decays into _.
A. Proton, electron, deuterium
B. Proton, electron, protrium
C. Proton, electron, neutrino
D. Proton, electron, deuteron
The speed of slow neutron is _ energy.
A. Below 1 ev
B. Above 1 ev
C. Below 1 Mev
D. Above 1 Mev
The speed of fast neutrons is __ energy.
A. 1.1 Mev
B. 1.2 Mev
C. 1.3 Mev
D. 1.4 Mev
Which neutrons are more effective for fission process.
A. Slow neutrons
B. Fast neutrons
C. Both a and b
D. None of the above