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Chemical Industries - 1
1.
NaOH is produced commercially by the electrolysis of brine in a mercury cell.
a) True
b) False
2.
NaOH is a strong alkali.
a) False
b) True
3.
Na
2
CO
3
is also called baking Soda.
a) False
b) True
4.
The aqueous solution of Na
2
CO
3
Changes blue litmus red.
a) True
b) False
5.
Na
2
CO
3
is prepared commercially by solvey's process.
a) False
b) True
6.
Detergents when dissolved in water reduce the intermolecular attractive forces between water molecules.
a) False
b) True
7.
The formula for polyvinyl chloride is CH
2
=CH
2
.
a) True
b) False
8.
Polyethene is prepared by the polymerization of ethyne (C
2
H
2
)
a) False
b) True
9.
China clay or BaSO
4
are used as fillers to the pigments.
a) True
b) False
10.
NaHCO
3
is used in preparation of soap.
a) True
b) False
11.
A pigment gives colour to the paint.
a) False
b) True
12.
Gamma rays have a low preservation power.
a) False
b) True
13.
The process of preparation of soap from fat is called saponification.
a) True
b) False
14.
Polyethen is an example of thermoplastic.
a) False
b) True
15.
Paints containing lead are dangerous.
a) True
b) False
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