A. Limestone
B. Soda ash
C. Coke
D. Sodium sulphate
Sand and ______________ is fused at 1300°C, to produce sodium silicate ? Read More »
Chemical Process A. Drilling of petroleum wells and pickling of steel sheets
B. Manufacture of cationic detergent
C. Treatment of spent fuel of nuclear reactor
D. None of these
The main use of HCl is in the___________________? Read More »
Chemical Process A. Making protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils
B. Fire fighting purposes
C. Both A. & B.
D. Neither A. nor (B)
High purity nitrogen is used in__________________? Read More »
Chemical Process A. 0.5
B. 5
C. 20
D. 35
A. Lauric acid
B. Palmitic acid
C. Stearic acid
D. Oleic acid
Which of the following is an unsaturated fatty acid ? Read More »
Chemical Process A. Electromagnetic separation mainly
B. Gravity separation
C. Froth floatation
D. Roasting
Iron ore hematite is concentrated using ____________________? Read More »
Chemical Process A. Bleaching powder
B. Chlorine
C. Calcium sulphate
D. Alum
A. Depithing
B. Digestion
C. Bleaching
D. None of these
A. PVC
B. Silicone
C. Polyurethanes
D. Polyamides
Flexible foam (for mattresses) is usually made of_____________________? Read More »
Chemical Process A. Do not soften on application of heat
B. Are heavily branched molecules
C. Are solvent insoluble
D. None of these
Thermoplastic materials_____________________? Read More »
Chemical Process