Chemical Technology GATE-2007

Q 1: Which of the following is desirable in gasoline but undesirable in kerosene?

A) Aromatics
B) Mercaptans
C) Naphthenic Acid
D) Paraffins

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Q 2: In the Sulfite process for paper manufacture, the ‘cooking liquor’ is

A) Magnesium bisulfite and sulfur dioxide in acid medium
B) Magnesium sulfite and magnesium dicarbonate
C) Sodium sulfite and magnesium sulfite
D) Sodium sulfite, sodium bisulfite and sulfur dioxide

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Q 3: Match the chemicals in Group 1 with their function in Group 2.

Group -1	Group -2
P: Styrene	1: Buffer
Q: Tert-dodecyl mercaptan	2: Catalyst
R: Potassium pyrophosphate	3: Modifier
	4: Monomer

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

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Q 4: Match the product in Group 1 with its application in the industries of Group 2.

Group -1	Group -2
P: Lithium stearate	1: Cosmetics
Q: Magnesium stearate	2: Paper
R: Aluminium sulphate	3: Dry cleaning
	4: Greases

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

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Q 5: Match the synthetic fibres in Group 1 with their classification in Group 2.

Group -1	Group -2
P: Rayon	1: Polyamide
Q: Orlon	2: Polyester
R: Dacron	3: Cellulose
	4: Acrylic

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

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Q 6: Match the Petrochemical derivative in Group 1 with the raw materials in Group 2.

Group -1	Group -2
P: Acrylonitrile	1: Methane
Q: Ammonia	2: Ethane
R: Dodecene	3: Ethylene
	4: Propylene

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

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