A. PVC
B. Silicone
C. Polyurethanes
D. Polyamides
Related Mcqs:
- 20% oleum means that in 100 kg oleum, there are 20 kg of_____________________?
A. SO3 and 80kg of H2SO4
B. H2SO4 and 80kg of SO3
C. SO3 for each 100 kg of H2SO4
D. None of these - Oleum produces fumes of_____________________?
A. SO2
B. H2SO4
C. SO3
D. SO2 + H2SO4 - Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of_____________________?
A. Nitric acid
B. Hydrochloric acid
C. Methyl alcohol
D. Formic acid - Zeolite removes both temporary as well as permanent hardness of water by precipitating calcium and magnesium present in water as insoluble zeolites. Used zeolite is regenerated by flushing with the solution of_____________________?
A. Calcium sulphate
B. Sodium chloride
C. Sodium sulphate
D. Magnesium chloride - Cation exchanger is regenerated usually with_________________________?
A. NaOH
B. H2SO4
C. Hydrazine
D. Alum solution - Which glass is usually used in optical work ?
A. Lead glass
B. High silica (borosilicate) glass
C. Photo-sensitive glass
D. Fibre glass - Essential oils are usually obtained using__________________?
A. Steam distillation
B. Extractive distillation
C. Solvent extraction
D. Leaching - Concentration of sulphide ores is done usually by____________________?
A. Roasting
B. Smelting
C. Froth floatation
D. Electromagnetic separation - Anion exchanger is regenerated usually with ____________________?
A. NaOH
B. H2SO4
C. Hydrazine
D. Alum solution - Le-Blanc process is a primitive process for the manufacture of___________________?
A. Caustic soda
B. Soda ash
C. Bromine from sea water
D. Hydrochloric acid
