Acids, Bases and Salts NDA Questions

NDA Chemistry

Acids, Bases and Salts MCQ Questions


7.
Sodium carbonate is a basic salt because it is a salt of a _____ acid and _____ base.
A.
Weak, weak
B.
Strong, strong
C.
Strong, weak
D.
Weak, strong
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ANSWER :
D. Weak, strong
8.
Which of the following is used for the manufacture of soap?
A.
Sodium chloride
B.
Sodium hydroxide
C.
Potassium nitrate
D.
Phenolphthalein solution
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ANSWER :
B. Sodium hydroxide
9.
Sugar is _____ in nature.
A.
Neutral
B.
Acidic
C.
Basic
D.
None of the above
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ANSWER :
A. Neutral
10.
Alkalis are bases, which are _____ in water.
A.
Soluble
B.
Insoluble
C.
Acidic
D.
Basic
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ANSWER :
A. Soluble
11.
What is the colour of the phenolphthalein in acidic solutions?
A.
Blue
B.
Red
C.
Green
D.
No colour
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ANSWER :
D. No colour
12.
What is the colour of the phenolphthalein in basic solutions?
A.
Green
B.
Pink
C.
Yellow
D.
Purple
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ANSWER :
B. Pink