Chemical Technology GATE-2017

Q 1: The DCDA (Double Contact Double Absorption) process is used in the manufacture of

A) Urea 
B) sulphuric acid
C) Nitric acid
D) Ammonia

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Q 2: Match the polymerization process in Group I with the polymers in Group – 2

Group -1	Group -2
P: Free radical polymerization	I: Nylon 6.6
Q: Ziegler Natta polymerization	II: Polypropylene
R: Condensation polymerization	III: Poly vinyl chloride

Choose the correct set of combination

A) P–I, Q–II, R–III
B) P–III, Q–II, R–I
C) P–I, Q–III, R–II 
D) P–II, Q–I, R–III

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Q 3: The purpose of the methanation reaction used in ammonia plants is to

A) Remove CO as it is a catalyst poison
B) Increase the amount of hydrogen
C) Remove sulfur as it is catalyst poison
D) Utilize methane as a catalyst for ammonia synthesis

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