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Chemistry - 9 Chapter - 9
Acids, Bases and Salts
Test - 15
1.
PH of acid is
a) Equal to 7
b) Equal to 14
c) Less than 7
d) More than 7
2.
The conjugate base of acetic acid is:
a) No
3
-
b) HCO
3
-
c) CH
3
COO
-
d) SO
4
-2
3.
Which one is a Lewis acid
a) NH
3
b) AlCl
3
c) CH
3
d) CH
3
COOH
4.
Acidity of a base is defined as
a) Number of ionizable hydrogen atom present in its molecule
b) Number of electron pair donated by a base
c) Number of protons donated by an acid
d) Number of ionizable hydroxyle group present in a base
5.
Na
2
CO
3
is known as
a) Castic soda
b) Baking soda
c) Washing Soda
d) Lemon soda
6.
An acid having PH=3 will have OH
-
ion concentration mol dm
-3
:
a) 10
-14
b) 100
c) 10
-3
d) 10
-11
7.
A strong acid has
a) Incomplete ionization
b) Great number of hydrogen atoms
c) Great number of hydroxyle atoms
d) Complete ionization
8.
Apple plant grows at PH of soil
a) 6.0-8.0
b) 5.0 - 6.5
c) 7.0-8.0
d) 4.5-6.0
9.
Some acids are free from oxygen it was discovered by _____________.
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10.
The word acid is derived from a Latin word _________ that means 'Sour'
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11.
Arrehenius presented a concept that all compounds which give ________________ in Aqous-solution are acids
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