Chemical Process MCQs

Question 1

The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is

Accepted Answer

Oleum

Answer

Dilute H 2 SO 4

Answer

Ultraviolet light

Answer

None of these

Question 2

In the manufacture of H 2 SO 4 , vanadium catalyst as compared to platinum catalyst

Accepted Answer

All of the above

Answer

Gives higher conversion efficiency

Answer

Has a longer life and is not poisoned by arsenic

Answer

Handles lower SO 2 content gas (7 - 10% SO 2 ), thus increasing the capital cost of the plant

Question 3

Impurities present in brine is normally removed by treatment with

Accepted Answer

All of the above

Answer

NH 3 and CO 2

Answer

Lime and soda ash

Answer

Lime, ammonia and carbon

Question 4

Multistage catalytic converter is not used in the

Accepted Answer

NH 3 synthesis reaction

Answer

Conversion of SO 2 to SO 3

Answer

Both A & B

Answer

Neither A nor B

Question 5

Salt cake is chemically represented by

Accepted Answer

Na 2 SO 4

Answer

CaSO 4 .$$\frac{1}{2}$$ H 2 O

Answer

MgSO 4

Answer

BaSO 4

Question 6

Anion exchanger is regenerated usually with

Accepted Answer

NaOH

Answer

H 2 SO 4

Answer

Hydrazine

Answer

Alum solution

Question 7

What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?

Accepted Answer

Cl 2 , H 2 & NaOH solution

Answer

Cl 2 & Na

Answer

Cl 2 & H 2

Answer

O 2 & H 2

Question 8

Which of the following is not responsible for causing permanent hardness of water?

Accepted Answer

Ca(HCO 3 ) 2

Answer

CaCl 2

Answer

MgCl 2

Answer

None of these

Question 9

Catalyst used in the oxidation of benzene to produce maleic anhydride is

Accepted Answer

V 2 O 5

Answer

Pt

Answer

Ni

Answer

Cr