10% oleum comprises of 10% free_________________?

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

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

7. Gun powder, which is an explosive comprises of charcoal, sulphur and____________________?

   A. Glycerine B. Salt petre C. Nitro glycerine D. Dynamite...

8. A mineral is termed as ‘ore’, if ____________________?

   A. A metal can be economically extracted from it B. It contains ≥ 40% metal C. The metal present in it is costly D. All A , B. and C....

9. Hydrazine (N2H4) is used mainly as a/an__________________?

   A. Explosive B. Rocket fuel C. Detergents additive D. None of these...

10. Deacon’s method is used for the manufacture of____________________?

    A. Glauber’s salt B. Common salt C. Chlorine D. Graphite electrode...