Symbols, Formulae and Simple Chemical Equations NDA Questions

NDA Chemistry

Symbols, Formulae and Simple Chemical Equations MCQ Questions


1.
Electrical discharge carried out in the modified cathode ray tube led to the discovery of _____ carrying positively charged particles.
A.
Anode rays
B.
Protons
C.
Canal rays
D.
Cathode rays
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ANSWER :
C. Canal rays
2.
Like charges repel each other and unlike charges _____ each other.
A.
Attract
B.
Repel
C.
Unbend
D.
Break
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ANSWER :
A. Attract
3.
What is the charge of cathode?
A.
Plus
B.
Neutral
C.
Positive
D.
Negative
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ANSWER :
D. Negative
4.
Who showed that if electricity is passed through a solution of an electrolyte, chemical reactions occurred at the electrodes, that resulted in the liberation and deposition of matter at the electrode?
A.
Hans Gieger
B.
Michael Faraday
C.
Ernest Rutherford
D.
J.J.Thomson
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ANSWER :
B. Michael Faraday
5.
Neutrons were discovered by Chadwick by bombarding a thin sheet of beryllium by _____
A.
g particles
B.
h particles
C.
α-particles
D.
b particles
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ANSWER :
C. α-particles
6.
The 1s orbital in a hydrogen atom corresponds to the most stable condition and is called the _____
A.
Ground state
B.
Excited state
C.
Degenerate
D.
Generate
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ANSWER :
A. Ground state