Acids, Bases and Salts NDA Questions

NDA Chemistry

Acids, Bases and Salts MCQ Questions


1.
Tooth decay is caused by the presence of _____
A.
Acid
B.
Base
C.
Salt
D.
Neutral
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ANSWER :
A. Acid
2.
Acetic acid is a _____ acid
A.
Strong
B.
Neutral
C.
Weak
D.
Base
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ANSWER :
C. Weak
3.
The pH range between which our body works to survive in the atmosphere is _____
A.
7 to 7.8
B.
1 to 8
C.
2.3 to 6
D.
1 to 7.4
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ANSWER :
A. 7 to 7.8
4.
Turmeric contains a natural dye of _____ colour.
A.
Blue
B.
Green
C.
Purple
D.
Yellow
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ANSWER :
D. Yellow
5.
Neutralisation reactions is a chemical and _____ change.
A.
Reversible
B.
Physical
C.
Irreversible
D.
None of the above
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ANSWER :
C. Irreversible
6.
Acid + Base ---> Salt + _____. Complete the equation.
A.
Solvent
B.
Water
C.
Powder
D.
Heat
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ANSWER :
B. Water