Chemical Technology GATE-2013

Q 1: In the manufacture of sulphuric acid by the contact process, the catalytic oxidation of SO₂ is carried out in multiple stages mainly to

A) increase the reaction rate by providing inter-stage heating
B) increase the overall conversion by providing inter-stage heating
C) increase the overall conversion by providing inter-stage cooling
D) decrease the overall conversion by removing sulfur trioxide between stages

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Q 2: Match the reactant–product combination in Group 1 with the unit process in Group 2

(P) propylene –butanol	(1) Pyrolysis
(Q) cumene –phenol	(2) Dehydrogenation
(R) butane –butadiene	(3) Hydroformylation
(S) ethylene dichloride – vinyl chloride	(4) Peroxidation

A) P-3, Q-2, R-4, S-1
B) P-2, Q-4, R-3, S-1 
C) P-1, Q-3, R-2, S-4
D) P-3, Q-4, R-2, S-1

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Q 3: Identify which of the following statements are FALSE.

Q: The production of synthesis gas from coal and steam is an endothermic process

Q: Production of synthesis gas from coal and steam is an endothermic process

R. Use of chlorine for bleaching of wood pulp results in the release of dioxins

S: In the manufacture of urea from ammonia, the main intermediate product formed is ammonium bicarbonate

A) P and Q only
B) R and S only
C) Q and R only  
D) P and S only

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