A. SO2
B. H2SO4
C. SO3
D. SO2 + H2SO4
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 - 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 - Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at _____________ °C ?
A. 15-30
B. 90-100
C. 250-300
D. < 0 - Chemical formula of oleum is_________________?
A. H2SO3
B. H2SO4
C. H2S2O7
D. H2SO7 - More than 100 percent of _________________ is present in oleum?
A. SO3
B. H2SO4
C. H2SO3
D. SO2 - 10% oleum comprises of 10% free_________________?
A. SO2
B. H2SO3
C. SO3
D. H2SO4 - Flexible foam (for mattresses) is usually made of_____________________?
A. PVC
B. Silicone
C. Polyurethanes
D. Polyamides - 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 - Reaction of calcium carbide with water produces a gas, which is used_________________?
A. As an illuminant
B. For metal cutting/welding
C. Both A. & B.
D. Neither A. nor B. - Fusion of limestone and ______________ produces high alumina cement?
A. Sand
B. Bauxite
C. Quicklime
D. Calcite
