Sand and ______________ is fused at 1300°C, to produce sodium silicate ?
A. Limestone
B. Soda ash
C. Coke
D. Sodium sulphate
Chemical Process
The main use of HCl is in the___________________?
The main use of HCl is in the___________________?
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
High purity nitrogen is used in__________________?
High purity nitrogen is used in__________________?
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)
Percentage of glycerine present in the spent lye obtained during soap manufacture is about________________?
Percentage of glycerine present in the spent lye obtained during soap manufacture is about________________?
A. 0.5
B. 5
C. 20
D. 35
Which of the following is an unsaturated fatty acid ?
Which of the following is an unsaturated fatty acid ?
A. Lauric acid
B. Palmitic acid
C. Stearic acid
D. Oleic acid
Iron ore hematite is concentrated using ____________________?
Iron ore hematite is concentrated using ____________________?
A. Electromagnetic separation mainly
B. Gravity separation
C. Froth floatation
D. Roasting
The most widely used coagulant for removing suspended impurities from water is__________________?
The most widely used coagulant for removing suspended impurities from water is__________________?
A. Bleaching powder
B. Chlorine
C. Calcium sulphate
D. Alum
Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?
Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo ?
A. Depithing
B. Digestion
C. Bleaching
D. None of these
Flexible foam (for mattresses) is usually made of_____________________?
Flexible foam (for mattresses) is usually made of_____________________?
A. PVC
B. Silicone
C. Polyurethanes
D. Polyamides
Thermoplastic materials_____________________?
Thermoplastic materials_____________________?
A. Do not soften on application of heat
B. Are heavily branched molecules
C. Are solvent insoluble
D. None of these