Chemical Technology GATE-2018

Q 1: In connection with petroleum refining, identify the incorrect statement among the following options

A) Desalting of crude oil is before processing it in atmospheric distillation unit
B) A stream of hydrogen is produced in catalytic reforming of naphtha
C) Asphalt used for paving IS a petroleum product
D) Cetane number indicates the quality of petrol/ motor spirit

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Q 2: Polyvinyl chloride is produced by

A) Co-polymerization 
B) addition-type kinetics
C) reacting chlorine with polyethylene
D) reacting hydrochloric acid with polyethylene

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Q 3: The molecular formula of the predominant chemical compound in commercial sugar is

A) C₁₂H₂₂O₁₁
B) C₁₂H₂₄O₁₂
C) C₆H₁₀O₅
D) C₆H₁₂O₆

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Q 4: Choose the correct statement, In the viscose rayon manufacturing process,

A) carbon disulfide used as reactant for xanthate formation is regenerated in a later step
B) caustic soda used as a reactant for steeping of cellulose is regenerated in a later step
C) sulphuric acid is used in the steeping process of cellulose
D) the spun viscose rayon is hardened in an alkali bath

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