Q.1
Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance.
Q.2
Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.
Q.3
Parathion and Malathion are
Q.4
Pasteurisation of milk means
Q.5
Hydrochloric acid is also known as
Q.6
Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine?
Q.7
Nylon-6 is manufactured from
Q.8
Oil is a/an
Q.9
In premitive days, __________ was being manufactured by Leblanc Process.
Q.10
Removal of dirt/soil by soaps or detergent does not involve the __________ of soil.
Q.11
__________ acid is the main constituent of cotton seed oil.
Q.12
DDT should not be allowed to come in contact with iron (during its manufacture) to
Q.13
Which of the following is not present in bagasse fibre?
Q.14
Sodium carbonate (soda ash) is not used in the manufacture of
Q.15
'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
Q.16
Coke used for the production of calcium carbide should have
Q.17
In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the
Q.18
The purpose of tanning in leather industry is to
Q.19
What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?
Q.20
Saponification value/number of an oil or fat is a measure of its
Q.21
High acid value of an oil or fat is an indication of
Q.22
Oleum produces fumes of
Q.23
Nylon 6-6 is manufactured from
Q.24
CO & H₂ are the constituents of
Q.25
Neoprene is a
Q.26
Neoprene is the trade name of
Q.27
The manufacture of Kraft pulp is done by a/an __________ process.
Q.28
Commercially ethylene is produced from naphtha by
Q.29
Nitric acid is not used in the manufacture of
Q.30
The basic constituent of vegetable oils is
Q.31
Pick out the wrong statement.
Q.32
Nylon-6 is a
Q.33
Polymerisation product of C₂F4 (carbon tetraflouride) is called P.T.F.E (poly chloro tetra flouro ethylene). It is also called
Q.34
The major constituent of black liquor generated during paper manufacture is sodium
Q.35
Starting material for the commercial production of ethyl alcohol in India is
Q.36
Oxidation of SO₂ to SO₃ is favoured by
Q.37
H₂S is scrubbed from refinery gases by absorption using
Q.38
Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material?
Q.39
How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?
Q.40
Pick out the wrong statement.
Q.41
Cellulose percentage in bamboo fibre is about
Q.42
During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as
Q.43
Na₂CO₃.10H₂O is called
Q.44
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at
Q.45
Main constituents of portland cement are calcium aluminate and
Q.46
A mineral is termed as 'ore', if
Q.47
Boiling of water containing temporary hardness produces
Q.48
Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement?
Q.49
Main use of liquid nitrogen is in
Q.50
Pick out the wrong statement.
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