Q.1.

Common salt is generally not produced commonly by __________ method from brine.

Q.2.

Massacuits is a terminology used in the __________ industry.

Q.3.

Oxygen is separated by distillation from air after its liquefaction. The boiling point of oxygen is about __________ °C.

Q.4.

Mercury electrolytic cell produces 50-NaOH solution. Its operating temperature is __________ °C.

Q.5.

Chemical name of soda ash is

Q.6.

Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material ?

Q.7.

Essential oils are usually obtained using

Q.8.

Exothermic condensation reaction of monochlorobenzene with chloral in presence ofoleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.

Q.9.

Low purity oxygen is used for

Q.10.

Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is

Q.11.

High temperature carbonisation of coal takes place at __________ °C.

Q.12.

Sodium carbonate (soda ash) is not used in the manufacture of

Q.13.

Chlorine gas is produced by the electrolysis of brine (NaCl solution with solid NaCl make up) in mercury electrolytic cell. Which of the following is the anodic reaction?

Q.14.

Hydrodenation of vegetable oils is a/an __________ reaction.

Q.15.

Starting raw material for the manufacture of maleic anhydride is

Q.16.

Production of one ton of dry paper pulp requires about __________ tons of bamboo or wood.

Q.17.

Aryl benzene sulphonate (ABS) is a

Q.18.

Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it

Q.19.

Carbon tetrachloride (CCl4) is the starting raw material for the manufacture of

Q.20.

Carbon disulphide is mainly used in the production of

Q.21.

Commercial production of Vanaspati is done by __________ of edible vegetable oils.

Q.22.

The basic constituent of vegetable oils is

Q.23.

Which is a high grade pulp ?

Q.24.

Titanium dioxide is a/an __________ colour pigment.

Q.25.

Vanillin is a type of

Q.26.

Glass is

Q.27.

Impurities present in brine is normally removed by treatment with

Q.28.

Cement mainly contains

Q.29.

__________ is produced using molasses as the starting raw material.

Q.30.

Poly tetraflouro ethylene (P.T.F.E.) is known as

Q.31.

White phosphorous is stored under water, because

Q.32.

Viscose rayon

Q.33.

Zeolite is a/an

Q.34.

Permanent hardness of water is due to the presence of calcium & magnesium

Q.35.

Pick out the wrong statement.

Q.36.

Dacron (or terylene) fibres as compared to nylon'fibres have

Q.37.

Adipic acid is an intermediate in the manufacture of

Q.38.

__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.

Q.39.

Salt is added in the kettle during soap manufacture to separate

Q.40.

99.purity oxygen is used in

Q.41.

Which catalyst is used in the manufacture of ethylene oxide by oxidation of ethylene ?

Q.42.

Baking soda is chemically represented by

Q.43.

Fourdrinier machine is used in the manufacture of

Q.44.

Celluloid is chemically

Q.45.

The most economical pulp for the production of newsprint would be the __________ pulp.

Q.46.

Stereospecific agents are exemplified by

Q.47.

Mercury cells for caustic soda manufacture, compared to diaphragm cells

Q.48.

Temporary hardness of water can be removed by

Q.49.

Analgesic drugs are

Q.50.

Hydrogenation of oil/fat does not