Chemical formula of oleum is_________________?

Related Mcqs:

1. 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...

2. Oleum produces fumes of_____________________?

   A. SO2 B. H2SO4 C. SO3 D. SO2 + H2SO4...

3. 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...

4. 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...

5. More than 100 percent of _________________ is present in oleum?

   A. SO3 B. H2SO4 C. H2SO3 D. SO2...

6. 10% oleum comprises of 10% free_________________?

   A. SO2 B. H2SO3 C. SO3 D. H2SO4...

7. Chemical formula of BHC, which is an insecticide is__________________?

   A. C6H6Cl6 B. C6Cl6 C. C6H5Cl D. C6H4Cl2...

8. Chemical formula of ‘salt cake’ is____________________?

   A. Na2SO4 B. CaSO4 C. MgSO4 D. BaSO4...

9. CaCl(OCl) is the chemical formula of___________________?

   A. Hypo B. Bleaching powder C. Plaster of Paris D. Aqua regia...

10. Superior quality laboratory apparatus is made of the _____________ glass having low thermal co-efficient of expansion & high chemical resistance?

    A. Flint B. Soda C. Pyrex D. Potash...