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11.

Select the wrong statement. Compared to platinum catalyst vanadium pentoxide catalyst used in contact process for the manufacture of H2SO4

A.	is relatively immune to poisons	B.	requires low initial investment and 5% replacement per year
C.	requires low O2/SO2 to give economic conversion	D.	requires dilute SO2 input (7-10%)

12.

The catalyst used in the manufacture of sulphuric acid by contact process is

A.	iron	B.	aluminium oxid
C.	nickel	D.	vanadium pentoxide

13.

In the manufacture of sulphuric acid by contact process platinum catalyst was previously used but suffers from

A.	easy poisoning	B.	fragility
C.	high initial investment	D.	all of these answers

14.

Poison for platinum catalyst is

A.	sulphuric acid is formed in solution	B.	phosphorous
C.	arsenic	D.	coke

15.

The most favourable conditions of temperature and pressure for the oxidation of sulphur dioxide to sulphur trioxide are

A.	low temperature high pressure	B.	low temperature low pressure
C.	high temperature high pressure	D.	high temperature low pressure

16.

The equilibrium yield of sulphur trioxide obtained from the oxidation of sulphur dioxide can be increased by

A.	square root of system pressure at a given temperature	B.	cube root of system pressure at a given temperature
C.	square of system pressure at a given temperature	D.	cube of system pressure at a given temperature

17.

Equilibrium constant (Kp) at constant pressure for sulphur dioxide oxidation

A.	increases with increase in temperature	B.	decreases with increase in temperature
C.	remains unaffected with change in temperature	D.	decreases linearly with increase in temperature

18.

For the production of sulphuric acid chamber process was developed first but produced acid of concentration

A.	less than 80%	B.	98%
C.	100%	D.	95%

19.

Contact process for the manufacture of sulphuric acid yields

A.	80% H2SO4 only	B.	98% H2SO4 and higher
C.	95% H2SO4 only	D.	90% H2SO4 only

20.

65% oleum

A.	is prepared by distilling 20% oleum	B.	is prespared by chamber process
C.	does not contain free SO3	D.	contains 0.65% free SO3