chemical engineering chemical process MCQs – Page 29

Practise multiple-choice questions from chemical engineering chemical process for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering chemical process Mcqs
561. Coal tar is used as a___________________?
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A. All A , B. and C.

B. Binder in making carbon electrodes

C. Binding material for coal briquettes

D. Fuel in rotary kiln

562. 10% oleum comprises of 10% free_________________?
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A. SO3

B. H2SO4

C. SO2

D. H2SO3

563. Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate ?
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A. Has high water solubility and is unstable

B. All A , B. and C.

C. Is soluble in ammonium chloride and potassium chloride solution

D. Is prone to thermal decomposition

564. DDT should not be allowed to come in contact with iron (during its manufacture) to _______________?
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A. None of these

B. Avoid its decomposition

C. Achieve non-hygroscopic property

D. Prevent sulphonation of the monochlorobenzene by the acid catalyst

565. In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 ? 2SO3), the reverse reaction becomes appreciable at a temperature of 550 C. The percentage equilibrium conversion of SO2 to SO3 can be increased by ?
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A. Removing some quantity of SO3 during intermediate stage

B. Increasing the oxygen concentration

C. Maintaining low temperature & pressure in the converter

D. Putting more quantity of V2O5 catalyst in the converter

566. Zeolite used in water softening process (cation exchange) is regenerated by washing with___________________?
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A. Liquid chlorines

B. Brine

C. Sodium bisulphite

D. Chloramines

567. An alkali metal salt of Palmitic acid is known as _____________________?
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A. Alkaloid

B. Detergent

C. Soap

D. Metallic soap
568. Pick out the wrong statement pertaining to the soap manufacture?
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A. Transparent soaps are made by cold process

B. Organic pigments are used as colouring materials in the soap manufacture

C. Both laundry as well as toilet soaps are manufactured by hot process

D. Colourless rosin is used in the manufacture of laundry soaps

569. Concentration of hydrogen peroxide is done by_____________________?
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A. Atmospheric distillation

B. Vacuum crystallisation

C. Dehydration

D. Crystallisation

570. ____________ process is used for the commercial production of nitric acid by the catalytic oxidation of ammonia ?
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A. Solvay

B. Habers

C. None of these

D. Ostwalds
571. Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc ?
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A. Sodium borate

B. Sodium tripolyphosphate (STPP)

C. Caustic soda

D. Sodium silicate

572. Pick out the wrong statement?
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A. Red color is imparted to glass by addition of arsenic oxide

B. Ordinary glass is represented chemically by Na2O . CaO . 6SiO2

C. Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or

D. Hard glass which is used for making laboratory glass wares is a mixture of sodium

E. osilicate and aluminium borosilicate

F. enic oxide

573. Zeolite is a/an___________________?
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A. None of these

B. Catalyst used in shift conversion

C. Naturally occuring clay which is capable of exchanging cations

D. Abrasive material

574. Which of the following processes is absent in glass manufacturing process ?
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A. Sintering

B. Melting

C. Annealing

D. Shaping or forming

575. Most commonly used rubber vulcanising agent is___________________?
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A. Bromine

B. Sulphur

C. Platinum

D. Alumina

576. Ca(OH)2 is called __________________?
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A. Limestone

B. Gypsum

C. Quicklime

D. Slaked lime
577. ____________ is a polysaccharide?
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A. Sucrose

B. Glucose

C. Maltose

D. Starch
578. Sodium carbonate (soda ash) is not used in the manufacture of___________________?
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A. Fire extinguishers

B. Detergents

C. Sugar

D. Baking powder

579. Thorium is mainly used _______________?
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A. For the manufacture of gas mantles

B. In the manufacture of hydrogen bomb

C. In the treatment of cancer

D. As a fissile fuel in a nuclear reactor

580. Neoprene is the trade name of___________________?
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A. Phenol formaldehyde

B. Styrene-butadiene rubber

C. Polyurethane

D. Polychlorophrene