Related Questions
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4
Acrylonitrile is mainly used in the __________ industry.
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4
More than 100 percent of __________ is present in oleum.
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4
Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.
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4
Sodium bisulphite is used for __________ water.
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4
At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.
B. Directly proportional to
C. Inversely proportional to
D. Proportional to the square of
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4
Flux addition during smelting of ore is done to
A. Remove impurities/gangue
B. Enhance rate of reaction
C. Accelerate reduction of ore
D. Separate slag from metal
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4
Percentage of glycerine present in the spent lye obtained during soap manufacture is about
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Oxygen is produced by fractionation of air using __________ process.
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4
Polycaprolactam is commercially known as
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CO & H2 are the constituents of
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Manufacture of phthalic anhydride uses __________ as a catalyst.
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Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is
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4
Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement?
C. Calcium & aluminium stearate
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4
Penicillin, an antibiotic drug was discovered by
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Which of the following processes can remove both temporary as well as permanent hardness of water?
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Which of the following is a constituent of vinegar?
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The catalyst used in shift converter is
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4
Synthetic glycerine is produced from
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4
Baking soda is chemically represented by
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4
Pick out the wrong statement.
A. Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators
B. Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur
C. Lead azide is a popular military explosive
D. TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being
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4
Separation of fresh water from sea water can be done by the __________ operation.
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4
What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?
D. Cl2, H2 & NaOH solution
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4
Gun powder, which is an explosive comprises of charcoal, sulphur and
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4
Viscose rayon is
B. Regenerated cellulose nitrate
C. Regenerated cellulose acetate
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4
Linde process of gas liquefaction employs
A. Exchange of heat with colder stream
B. Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
C. Adiabatic expansion against a piston or in a turbine
D. Merely compressing the gas beyond its critical pressure
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4
__________ is a polysaccharide.
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Which of the following is a constituent of coffee?
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4
Bleaching of paper pulp is done with
C. Chlorine or chlorine dioxide
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4
Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
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4
In the production of soda ash by Solvay process, the by-product is