Atoms-and-Molecules UPSC Questions

Chemistry

Atoms-and-Molecules MCQ Questions


1.
The word ‘atom’ has been derived from the Greek word ‘a-tomio’ which means _____
A.
Non-divisible
B.
Uncuttable
C.
Both a and b
D.
Divisible
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ANSWER :
C. Both a and b
2.
Who was the first to propose the atomic theory of matter on a firm scientific basis?
A.
Albert Einstein
B.
John Dalton
C.
Robert Boyle
D.
James Chadwick
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ANSWER :
B. John Dalton
3.
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
4.
What is the charge of cathode?
A.
Plus
B.
Neutral
C.
Positive
D.
Negative
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ANSWER :
D. Negative
5.
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
6.

Statement: In cathode ray discharge tube, when sufficiently high voltage is applied across the electrodes, current starts to flow.
Question: The cathode rays start from _____ and move towards the _____

A.

Anode, anode

B.

Cathode, cathode

C.

Cathode, anode

D.

Anode, cathode

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ANSWER :

C. Cathode, anode