The substances that reduces the effectiveness of a catalyst are called ___________________?

Related Mcqs:

1. Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________?

   A. ionic substances
   B. metallic substances
   C. molecular solids
   D. covalent network solids

   Submitted by: Mansoor Ul Haque

2. The addition of a catalyst to the reaction system__________________?

   A. Increases the rate of forward reaction only
   B. Increases the rate of reverse reaction
   C. Increases the rate of forward but decreases the rate of backward reaction
   D. Increases the rate of forward as well as backward reaction equally

3. Each catalyst has_________________?

   A. Specificity
   B. Special structure
   C. Its own Ea
   D. all of above

4. A catalyst can not effect__________________?

   A. Products
   B. Chemical equilibrium
   C. Reactants
   D. both A & B

5. Which catalyst is used in contact process ?

   A. Fe2O3
   B. V2O5
   C. SO3
   D. Ag2O

6. Catalyst used to speed up the reaction of ammonia synthesis is________________________?

   A. V2O5
   B. V2O5 and Pt
   C. Fe
   D. Pieces of Fe crystals are embedded in fused mixture of MgO Al2O3 and SiO2

7. Which of the following is the most suitable catalyst for ammonia synthesis ?

   A. Pt
   B. ZnO + Cr2O3
   C. Fe in fused mixture of Al2O3 + SiQ2 + MgO
   D. All of the above

8. What catalyst is employed when benzene is prepared from acetylene at 70°C?

   A. Cr2O3 + A2O3 + SiO2
   B. Raney nickel
   C. Organo-nickel
   D. Ni 250 – 300°C

9. In Bosch Process, that is used to separate the Hydrogen gas from water Gas, the catalyst is used ______?

   A. Pt
   B. FeO
   C. Cr²O³
   D. Both B&C

   Submitted by: Aamir khan Hullio

10. The product of the reaction between steam and Hydrocarbon in presence of Ni catalyst at 900°C is _____.

    A. CO²+O²
    B. CO+H²(water gas)
    C. CO³+H²O
    D. Laughing Gas

    Submitted by: Aamir khan Hullio