More than 100 percent of _________________ is present in oleum?

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. Chemical formula of oleum is_________________?

   A. H2SO3
   B. H2SO4
   C. H2S2O7
   D. H2SO7

3. Oleum produces fumes of_____________________?

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

4. 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

5. 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

6. 10% oleum comprises of 10% free_________________?

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

7. Pure rectified spirit contains about _________________ percent alcohol?

   A. 45
   B. 70
   C. 95
   D. 99.5

8. Sucrose content in the raw juice extracted from sugar cane is about _________________ percent?

   A. 1 – 2
   B. 15 – 20
   C. 50 – 60
   D. 80 – 85

9. Average sulphur content in Indian pyrites is about _________________ percent?

   A. 15
   B. 35
   C. 55
   D. 70

10. The amount of benzene present in pure Benzol is about _______________ percent ?

    A. 30
    B. 50
    C. 70
    D. 90