Chemistry MCQS for Class 10
Permanent hardness can be removed by using .
Sodium Zeolite
Quick lime
Lime water
Soda lime
Sodium zeolite is resin of:
NaAl(SiO3)2
KAl(SiO3)2
RbAl(SiO3)2
LiAl(SiO3)2
The % age of drinkable water on earth is
5.00%
0.02%
0.20%
2.00%
How many percentage to water contains oceans?
67%
77%
97%
87%
Which of the following in soluble in water.
Glucose
Alcohal
Organic acids
All of them
Which compound protect teeth from diseases?
Iodine compound
Chlorine compound
Bromine compound
Fluorine compound
Calcium carbonate is in water.
Sparingly
Insoluble
None of them
Soluble
Clark’s method is used to remove the hardness of water, in this method which is used.
Ca-Zeolite
Na-Zeolite
Ca(OH)2
Ca(HCO3)2
Chemical formula of hypochlorous acid is.
HCl
HOCl
HF
H2CO3
Which of the following gas is used to destroy harmful bacteria in water.
fluorine
Chlorine
Iodine
Bromine
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