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Chemistry - 9 Chapter - 9
Acids, Bases and Salts
Test - 11
1.
Salts, which are formed by the partial replacement of hydroxyl groups present in the bases, are called normal salts.
a) True
b) False
2.
When two specific salts are crystallized by dissolving them in water the crystals which are obtained are called
double salts.
a) False
b) True
3.
A chemical reaction which proceeds in one direction only is called ____ chemical reaction.
a) Exothermic
b) Reversible
c) Endothermic
d) Irreversible
4.
Acetate ion (CH
3
COO), chloride ion (CL-) nitrate ion (NO
3
) and hydrogen sulphate ion (HSO-
4
) are Lewis ______. Bases ( Feed all answers in small leters )
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5.
According to both Lewis and Bronsted concepts, ammonia is regarded as _____ while a proton (H+) is regarded as _______.
a) Base, acid
b) Acid, base
6.
Acidic, Basic and neutral nature of the salt solution is indicated by pH of the solution.
a) True
b) False
7.
Sodium hydrogen carbonate is used as banking soda.
a) False
b) True
8.
The formula of Sulphuric acid is:
a) H
2
SO
4
b) NaOH
c) HNO
3
d) HCl
9.
The formula of Ferric hydroxide is:
a) NH
4
OH
b) Fe(OH)
3
c) CH
3
COOH
d) HNO
3
10.
The formula of Acetic acid is:
a) HNO
3
b) H
2
SO
4
c) NH
4
OH
d) CH
3
COOH
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