Alum is commercially produced from___________________?
Alum is commercially produced from___________________?
A. Gypsum
B. Feldspar
C. Galena
D. Bauxite
Chemical Process
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In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the__________________?
In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the__________________?A. Diamine and the ring
B. Dibasic acid and the ring
C. Diamine and the dibasic acid
D. None of these -
Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at __________________?
Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at __________________?A. 1 atm & 100°C
B. 5 atm & 275°C
C. 100 atm & 500°C
D. 50 atm & 1000°C -
Conversion of SO2 to SO3 in Monsanto 4-pass converter is about ____________________ percent?
Conversion of SO2 to SO3 in Monsanto 4-pass converter is about ____________________ percent?A. 80
B. 90
C. 98
D. 100 -
Styrene is produced from ethyl benzene by the process of__________________?
Styrene is produced from ethyl benzene by the process of__________________?A. Dehydrogenation
B. Oxidation
C. Alkylation
D. Dehydration -
Calcination of gypsum produces__________________?
Calcination of gypsum produces__________________?A. Plaster of Paris
B. Salt cake
C. Nitre cake
D. Lime -
Which is the most efficient absorbent for SO3 out of the following ?
Which is the most efficient absorbent for SO3 out of the following ?A. 20% oleum
B. 65% oleum
C. 78% H2SO4
D. 98% H2SO4 -
DDT should not be allowed to come in contact with iron (during its manufacture) to _______________?
DDT should not be allowed to come in contact with iron (during its manufacture) to _______________?A. Avoid its decomposition
B. Prevent sulphonation of the monochlorobenzene by the acid catalyst
C. Achieve non-hygroscopic property
D. None of these -
______________ are added in lacquers to remove film brittleness and to improve adhereness?
______________ are added in lacquers to remove film brittleness and to improve adhereness?A. Film forming materials
B. Plasticisers
C. Diluents
D. Solvents -
10% oleum comprises of 10% free_________________?
10% oleum comprises of 10% free_________________?A. SO2
B. H2SO3
C. SO3
D. H2SO4