1.
Which of the following
elements is non-radioactive?
a.
Uranium
b.
Thorium
c.
Plutonium
d.
Zirconium
2.
According to Dalton’s
atomic theory the smallest particle which can exist independently is:
a.
An atom
b.
A molecule
c.
A cation
d.
An anion
3.
The recent atomic weight
scale is based on:
a.
1H1
b.
1H2
c.
6C12
4.
The neutral atom’s two
isotopes differ in the number of:
a.
Electron shells
b.
Protons
c.
Valence electrons
d.
Neutrons
5.
Optical fibres are
mainly used in:
a.
Communication
b.
Weaving
c.
Musical Instruments
d.
Food
Industry
6.
The
first synthetic fibre made by man was:
a. Rayon
b. Nylon
c. Polyester
d. Terycott
7.
Which
variety of glass is heat resistant?
a. Hard glass
b. Flint glass
c. Pyrex
glass
d. Bottle glass
8.
Which
of the following is used for removing air bubbles from glass during its
manufacture ?
a. Fledspar\
b. Arsenic
oxide
c. Potassium Carbonate
d. Soda Ash
9.
What
are soaps?
a. Salts of silicates
b. Ester of heavy fatty acids
c. Sodium
or potassium salts of heavier fatty acids
d. Mixture of glycerol and alcohol
10.
Which
of the following is used in making artificial sweetener saccharine?
a.
Benzene
b.
Toluene
c.
Phenol
d.
Aniline
11.
Rayon
is chemically:
a.
Glucose
b.
Amylase
c.
Cellulose
d.
Peptin
12.
Which
of following is used as a filter in rubber tyres?
a.
Graphite
b.
Coal
c.
Coke
d.
Carbon Black
13.
In
vulcanization, natural rubber is heated with:
a. Carbon
b. Sulphur
c. Silicon
d. Phosphorus
14.
Which
type of fire extinguisher is used for petroleum fire?
a. Foam type
b. Soda acid type
c. Powder
type
d. None of these
15.
Which
is/ are the important raw materials in cement industry?
a. Limestone
b. Gypsum & Clay
c. Clay
d. Limestone
& Clay
16.
Which
of the following is the petroleum wax?
a. Bees wax
b. Carnauba wax
c. Paraffin
wax
d. Jojoba wax
17.
Which
of the following fibres is generally preferred for making gauze and lint?
a.
Cotton
b.
Rayon
c.
Nylon
d.
Terylene
18.
Rubber
is coagulated from latex by adding:
a.
Hydrochloric acid
b.
Acetic acid
c.
Sulphuric acid
d.
Carbonic acid
19.
Paper
is manufactured by:
a.
Wood and resin
b.
Wood, Sodium and Bleaching
powder
c.
Wood and bleaching
powder
d.
Wood, Calcium, hydrogen sulphate and resin
20.
Which
synthetic fibre is known as artificial silk?
a.
Cotton
b.
Rayon
c.
Terylene
d.
Nylon