Chemical Process MCQ Questions & Answers

91

Calgon used in water treatment is chemically

A) Sodium phosphate B) Sodium hexametaphosphate C) Calcium phosphate D) Tricresyl phosphate

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Answer & Solution

Answer: Option B

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92

The main use of activated carbon in water treatment is to control

A) Bacterial growth B) Taste and odour C) Turbidity D) None of these

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Answer & Solution

Answer: Option B

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93

Type of glass used in optical work is the __________ glass.

A) Soda-lime B) Fibre C) Lead D) Borosilicate

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Answer & Solution

Answer: Option C

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94

The most economical pulp for the production of newsprint would be the __________ pulp.

A) Groundwood B) Sulphate C) Sulphite D) Semichemical

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Answer & Solution

Answer: Option A

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95

Solvay process as compared to dual process (i.e. modified Solvay process)

A) Can use low grade brine B) Has less corrosion problems C) Involves higher investment in NH₃ recovery units than that for crystallisation units for NH₄Cl D) Both B and C

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Answer & Solution

Answer: Option D

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96

Pick out the wrong statement.

A) Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens the hard soaps and increases its cleansing action B) Soap powder is prepared by mixing soap with hydrated sodium carbonate C) Detergents differ from soaps in their action in hard water D) Tarnish inhibitor (e.g., benzotriazole) is added in soap to facilitate the removal of stains due to tea, blood etc

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Answer & Solution

Answer: Option D

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97

Cumene (isopropyl benzene) is made by

A) Oxidation of napthalene B) Propylene alkylation of benzene C) Polymerisation of a mixture of benzene & propylene D) None of these

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Answer & Solution

Answer: Option B

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98

Commercial production of soda ash by Solvay process requires limestone, __________ as raw materials.

A) Coke and sand B) Brine and coal C) Coke and caustic soda D) None of these

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Answer & Solution

Answer: Option B

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99

The gasification reaction represented by, C + H₂O = CO + H₂, is a/an __________ reaction.

A) Exothermic B) Endothermic C) Catalytic D) Autocatalytic

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Answer & Solution

Answer: Option B

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100

Dense soda ash used in the manufacture of glass, is chemically represented by

A) Na₂CO₃ B) Na₂CO₃.10H₂O C) Na₂CO₃.H₂O D) Na₂HCO₃

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Answer: Option C

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Chemical Process MCQ Questions & Answers | Chemical Engineering