Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of_________________?

Related Mcqs:

1. Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like_________________?

   A. High cost B. Fragile nature C. Easy poisoning tendency D. All A, B. and C....

2. In the manufacture of H2SO4, vanadium catalyst as compared to platinum catalyst___________________?

   A. Gives higher conversion efficiency B. Has a longer life and is not poisoned by arsenic C. Handles lower SO2 content gas (7 -10% SO2), thus increasing the capital cost of the plant D. All A , B. and C....

3. Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively ?

   A. V2O5 & Cr2O3. B. Oxides of nitrogen & Cr2O3 C. V2O5 on a porous carrier & oxides of nitrogen D. Oxides of nitrogen & V2O5 on a porous carrier...

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. Conversion of CO to CO2 by steam in presence of a catalyst is called__________________?

   A. Steam reforming B. Shift conversion C. Steam gasification D. None of these...

6. Oxidation of ortho-xylene in presence of ______________ catalyst is done to produce phthalic anhydride on commercial scale ?

   A. Nickel B. Vanadium C. Alumina D. Iron...

7. Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at __________________?

   A. 1 atm & 100°C B. 5 atm & 275°C C. 100 atm & 500°C D. 50 atm & 1000°C...

8. Highly porous refractory bricks are ____________________?

   A. Less susceptible to chemical attack by molten fluxes and gases etc B. Very strong C. Having very high thermal conductivity D. None of these...

9. Nickel is not used as a catalyst in the____________________?

   A. Fischer-Tropsch process B. Shift conversion C. Hydrogenation of oil D. Ostwald’s process of HNO3 manufacture...

10. Fat splitting catalyst is__________________?

    A. CaCO3 B. ZnO C. Al2O3 D. Fe...