Periodic Classification of Elements UPSC Questions

Chemistry

Periodic Classification of Elements MCQ Questions


1.
In the beginning, elements of the periodic table are mainly classified into
A.
Metals only
B.
Non-Metals only
C.
Metals and Non-Metals
D.
metalloids
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ANSWER :
C. Metals and Non-Metals
2.
How many elements are there on the periodic table?
A.
120
B.
118
C.
100
D.
98
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ANSWER :
B. 118
3.
Among the elements on the periodic table, how many elements are naturally occurring?
A.
94
B.
10
C.
105
D.
87
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ANSWER :
A. 94
4.
Some elements exhibited properties because of which they could neither be classified as metals nor non-metals and hence were called as
A.
Metalloids
B.
Metallurgy
C.
Periodic table
D.
None of the above
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ANSWER :
A. Metalloids
5.
The law of Octaves was invented by
A.
J.W.Dobereiner
B.
Mendeleev
C.
Newland
D.
Faraday
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ANSWER :
C. Newland
6.
The earliest attempt to classify the elements resulted in grouping the then known elements as
A.
Natural and man-made
B.
Chemical and physical
C.
Metals and non-metals
D.
None of these
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ANSWER :
C. Metals and non-metals