Q.1.

Contact process of sulphuric acid manufacture

Q.2.

Na2CO3 is called

Q.3.

Which of the following is not an antibiotic ?

Q.4.

Widely used method for the conditioning of boiler feed water is the

Q.5.

The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent.

Q.6.

The most reactive allotropic form of phosphorus is __________ phosphorus.

Q.7.

Blue colour is imparted to glass by the addition of

Q.8.

Reaction of calcium carbide with water produces a gas, which is used

Q.9.

Salt is the basic raw material for the manufacture of

Q.10.

Flux addition during smelting of ore is done to

Q.11.

Lithopaneis

Q.12.

Pick out the wrong statement.

Q.13.

Hydrazine is used in water treatment for the removal of

Q.14.

What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell ?

Q.15.

Hydrazine (N2H4) is used mainly as a/an

Q.16.

Direct conversion of chemical energy into electrical energy is done in a

Q.17.

__________ acid is the main constituent of cotton seed oil.

Q.18.

Hydrocynic acid (HCN) is used as an insecticide for

Q.19.

Which of the following is not produced commercially from sea water ?

Q.20.

Chemical formula of 'salt cake' is

Q.21.

Molecular weight of plastics ranges from

Q.22.

Pick out the wrong statement.

Q.23.

Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in

Q.24.

Chemical name of 'alum' is

Q.25.

Viscosity index improver (like polystrene or polyisobutylene) is added to lubricant to

Q.26.

Carbon content of pitch (residue of coal tar distillation) is around __________ percent.

Q.27.

Yellow glycerine is made into white, using

Q.28.

Main use of liquid nitrogen is in

Q.29.

__________ is produced using polycondensation reaction.

Q.30.

Calcination of gypsum produces

Q.31.

Unsaturated oils compared to saturated oils have

Q.32.

The biochemical treatment applied to sewage effluents is a process of

Q.33.

Pick out the wrong statement pertaining to solvent extraction of oil.Rate of extraction

Q.34.

Sodium salt of higher molecular weight fatty acid is termed as the __________ soap.

Q.35.

Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.

Q.36.

Which of the following is a detergent ?

Q.37.

The noble gas which occurs most abundantly in the atmosphere is

Q.38.

The temperature in the calcium carbide furnace is __________ °C.

Q.39.

Comparing sulphate process with sulphite process, we find that __________ in the later.

Q.40.

Raw materials required for the manufacture of __________ is acetylene and hydrochloric acid.

Q.41.

Phthalic anhydride is produced by the oxidation of

Q.42.

With increase in temperature, the equilibrium constant at constant pressure (Kp) for oxidation of sulphur dioxide

Q.43.

Ultimate analysis of coal determines its __________ content.

Q.44.

Sea weeds are an important source of

Q.45.

Synthetic glycerine is produced from

Q.46.

Brackish water which contains mostly dissolved salt, can be purified by the __________ process.

Q.47.

Sulphuric acid is mainly used in the __________ industry.

Q.48.

Production of alcohol by fermentation of molasses is an __________ process.

Q.49.

Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of

Q.50.

Which of the following is a disacchride ?