The S-Block Elements NDA Questions

NDA Chemistry

The S-Block Elements MCQ Questions


13.
What is the other name for calcium oxide?
A.
Face cream
B.
Caustic soda
C.
Quick lime
D.
Washing soda
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ANSWER :
C. Quick lime
14.
Which of the following compounds are important compounds of calcium?
A.
Calcium oxide
B.
Calcium sulphate
C.
Cement
D.
All the above
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ANSWER :
D. All the above
15.
What is the melting point of calcium oxide in K?
A.
200 K
B.
2870 K
C.
1098 K
D.
2067 K
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ANSWER :
B. 2870 K
16.
Calcium oxide is employed in the purification of _____
A.
Talcum powder
B.
Sugar
C.
Salt
D.
Tooth paste
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ANSWER :
B. Sugar
17.
_____ is prepared by adding water to quick lime
A.
Calcium oxide
B.
Calcium sulphate
C.
Calcium hydroxide
D.
Calcium carbonate
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ANSWER :
C. Calcium hydroxide
18.
What is the aqueous solution of calcium hydroxide called as?
A.
Milk of magnesia
B.
Mortar
C.
Washing powder
D.
Lime water
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ANSWER :
D. Lime water