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Chemistry Class 10 Chapter 10 - Acids, Bases and Salts - 4
1.
The negative logarithm of the molar concentration of H
+
ions in aquous solution is known as?
a) condensation
b) ionization of water
c) pH
d) pOH
2.
When OH^- ions increases and H^+ ions decreases in a solution, it becomes?
a) acidic
b) none of these
c) neutral
d) basic
3.
Which one of the following is a basic salt?
a) (NH
4
)H
2
PO
4
b) NaHCO
c) Cu(OH)Cl
d) KHSO
4.
Phenolphthalein in acidic solution is?
a) colourless
b) blue
c) pink
d) red
5.
The salt which is formed by the complete neutralization of anb acid is called as?
a) soda ash
b) acid salt
c) normal salt
d) basic salt
6.
Apple grows better at pH range?
a) 6.0 - 7.5
b) 5.5 - 6.5
c) 5.5 - 7.0
d) 6.5 - 7.0
7.
Which one of the following is a method of food preservation?
a) drying
b) boiling
c) salting
d) all of these
8.
Methyle red changes its colour at pH?
a) 7
b) 5.5
c) 11
d) 9
9.
Magnesium hydroxide is used?
a) in making plasters
b) as laxative
c) in making cement
d) in making mortar
10.
The main component of the gastric juice in the stomach is?
a) H
2
SO
4
b) HCl
c) NaCl
d) HNO
3
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