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Chemistry Class 10 Chapter 10 - Acids, Bases and Salts - 9
1.
A substance that can accept a pair of electrons to form a
coordinate covalent bond is known as?
a) Lewis acid
b) Lewis base
c) Arrhenius acid
d) Bronsted Lowry acid
2.
HCl is a(n)?
a) base
b) metal
c) acid
d) salt
3.
Which one of the following is an acid?
a) HNO
3
b) NaOH
c) NH
4
OH
d) KOH
4.
In pure water, the concentration of?
a) none of these
b) H
+
and OH
-
ions are equal
c) H
+
ion is less than OH
-
ion
d) H
+
ion is greater than OH
-
ion
5.
The reaction between acids and bases that gives salts and water is known as?
a) hydrolysis
b) condensation
c) neutralization
d) dehydration
6.
The pH of bleach is?
a) 7
b) 14
c) 13
d) 8
7.
The formula of sodium hydroxide is?
a) KOH
b) Ca(OH)
2
c) NaOH
d) Mg(OH)
2
8.
Arrhenius was a?
a) physicist
b) biologist
c) chemist
d) geologist
9.
The colour of methyl red in acidic solution is?
a) pink
b) yellow
c) blue
d) red
10.
Which one of the following is a base?
a) H
2
SO
4
b) HNO
3
c) KOH
d) HCl
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