Chemical Technology GATE-2014

Q 1: Decomposition efficiency (ɳ) of an electrolytic cell used for producing NaOH is defined as

A) ɳ= (grams of NaOH produced / grams of NaCl decomposed) × 100
B) ɳ = (grams of NaOH produced / grams of NaCl charged) × 100
C) ɳ = (gram equivalents of NaOH produced / gram equivalents of NaCl charged) × 100
D) ɳ = (theoretical current to produce one gram equivalent / actual current to produce one gram equivalent) × 100

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Q 2: Catalytic cracking is

A) a hydrogen addition process
B) a carbon rejection process
C) an exothermic process
D) a cooking process

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Q 3: Which ONE of the following statements is CORRECT?

A) The major components of biodiesel are triglycerides
B) Biodiesel is essentially a mixture of ethyl esters
C) Biodiesel is highly aromatic
D) Biodiesel has a very low aniline point

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Q 4: Match the raw materials of Groups 1 and 2 with the final products of Group 3

P1: Ethylene	Q1: Ammonia	R1: Synthetic fibre
P2: Propylene	Q2: 1-Butene	R2: Nylon 66
P3: Adipic acid	Q3: Ethylene glycol	R3: LLDPE
P4: Terephthalic acid	Q4: Hexamethylene diamine	R4: Acrylonitrile

A) P₁+Q₂→R₃; P₂+Q₁→R₄; P₃+Q₄→R₂; P₄+Q₃→R₁
B) P₁+Q₁→R₃; P₂+Q₃→R₁; P₃+Q₄→R₄; P₄+Q₂→R₂
C) P₁+Q₂→R₂; P₂+Q₃→R₁; P₃+Q₄→R₃; P₄+Q₁→R₄
D) P₁+Q₁→R₄; P₂+Q₂→R₃; P₃+Q₄→ R₂; P₄+Q₃→R₁

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Q 5: Determine the correctness or otherwise of the following Assertion [a] and Reason [r]. Assertion: Significant combustion of coke takes place only if it is heated at a higher temperature in the presence of air.

Reason: C + O₂ → CO₂ is an exothermic reaction.

A) Both [a] and [r] are true and [r] is the correct reason for [a]
B) Both [a] and [r] are true but [r] is not the correct reason for [a]
C) [a] is correct but [r] is false
D) Both [a] and [r] are false

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