The P-Block Elements NDA Questions

NDA Chemistry

The P-Block Elements MCQ Questions


1.
What are the less abundant elements in nature?
A.
Gallium
B.
Indium
C.
Thallium
D.
All the above
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ANSWER :
D. All the above
2.
What is the most abundant element on earth?
A.
Helium
B.
Hydrogen
C.
Oxygen
D.
Carbon
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ANSWER :
C. Oxygen
3.
______ metal/s, owing to their reactivity with oxygen and nitrogen at elevated temperatures, have often been used to remove air from vacuum tubes
A.
Calcium
B.
Barium
C.
Both a and b
D.
Beryllium
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ANSWER :
C. Both a and b
4.
Elements on two extremes of a period easily combine with ______ to form oxides
A.
Nitrogen
B.
Oxygen
C.
Boron
D.
Silicon
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ANSWER :
B. Oxygen
5.
The normal oxide formed with oxygen by the element on extreme left is the most ______
A.
Salt
B.
Neutral
C.
Acidic
D.
Basic
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ANSWER :
C. Acidic
6.
The normal oxide formed with oxygen by the element on extreme right is the most ______
A.
Acidic
B.
Basic
C.
Neutral
D.
Salt
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ANSWER :
A. Acidic