Chemical Process MCQs

Option A: Making protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils

Option B: Fire fighting purposes

Option C: Both A. & B.

Option D: Neither A. nor (B)

Correct Answer: C. Both A. & B. ✔

Option A: 0.5

Option B: 5

Option C: 20

Option D: 35

Correct Answer: 5 ✔

Option A: Lauric acid

Option B: Palmitic acid

Option C: Stearic acid

Option D: Oleic acid

Correct Answer: Oleic acid ✔

Option A: Electromagnetic separation mainly

Option B: Gravity separation

Option C: Froth floatation

Option D: Roasting

Correct Answer: Gravity separation ✔

Option A: Bleaching powder

Option B: Chlorine

Option C: Calcium sulphate

Option D: Alum

Correct Answer: Alum ✔

Option A: Depithing

Option B: Digestion

Option C: Bleaching

Option D: None of these

Correct Answer: Depithing ✔

Option A: PVC

Option B: Silicone

Option C: Polyurethanes

Option D: Polyamides

Correct Answer: Polyurethanes ✔

Option A: Do not soften on application of heat

Option B: Are heavily branched molecules

Option C: Are solvent insoluble

Option D: None of these

Correct Answer: None of these ✔

Option A: Avoid mechanical weakening of fibre

Option B: Remove lignin by way of crystallisation

Option C: Increase the cellulose content

Option D: None of these

Correct Answer: Avoid mechanical weakening of fibre ✔

Option A: Ca(OH)2

Option B: C2H2

Option C: CO2

Option D: CaCO3

Correct Answer: C2H2 ✔

Option A: 3

Option B: 12

Option C: 22

Option D: 0.3

Correct Answer: 3 ✔

Option A: Simply boiling

Option B: Adding alum

Option C: Passing it through cation & anion exchangers

Option D: All (A), B. and (C)

Correct Answer: Passing it through cation & anion exchangers ✔

Option A: Unsaturated fat

Option B: Starting material for the production of iodine

Option C: By-product of chlor-alkali industry

Option D: None of these

Correct Answer: None of these ✔

Option A: Average degree of polymerisation of the polymer is 1966

Option B: Number of carbon atoms between two nitrogen atoms are 6

Option C: Number of nitrogen atoms between two carbon atoms are 6

Option D: Polymer was first synthesised in 1966

Correct Answer: Average degree of polymerisation of the polymer is 1966 ✔

Option A: Coke

Option B: Ammonia

Option C: Tar

Option D: Phenol

Correct Answer: Coke ✔

Option A: Soap from lye

Option B: Glycerine from lye

Option C: The metallic soap

Option D: The unsaponified fat from soap

Correct Answer: Soap from lye ✔

Option A: 2-8

Option B: 18-23

Option C: 27-32

Option D: 1-4

Correct Answer: 2-8 ✔

Option A: Fatty acid

Option B: Fatty alcohols

Option C: Tallow

Option D: Detergents

Correct Answer: Tallow ✔

Option A: Bacterial growth

Option B: Taste and odour

Option C: Turbidity

Option D: None of these

Correct Answer: Taste and odour ✔

Option A: Osmosis

Option B: Reverse osmosis

Option C: Absorption

Option D: Adsorption

Correct Answer: Reverse osmosis ✔

Option A: High cost

Option B: Fragile nature

Option C: Easy poisoning tendency

Option D: All A, B. and C.

Correct Answer: D. All A, B. and C. ✔

Option A: Reduced softening capacity of zeolite

Option B: Increased dosage of chlorine to provide a disinfecting residual in the water

Option C: Easy removal of its hardness

Option D: None of these

Correct Answer: Increased dosage of chlorine to provide a disinfecting residual in the water ✔

Option A: Quartz

Option B: Galena

Option C: Siderite

Option D: Chalcopyrite

Correct Answer: Galena ✔

Option A: Iron-steam reaction

Option B: Electrolysis of water

Option C: Steam reforming of naphtha

Option D: Its cryogenic separation from coke oven gas

Correct Answer: Iron-steam reaction ✔

Option A: Lime

Option B: Sulphuric acid

Option C: Chlorine

Option D: Sodium bisulphite

Correct Answer: Lime ✔

Option A: Magnesium & potassium compounds

Option B: Common salt

Option C: Bromine

Option D: Iodine

Correct Answer: Iodine ✔

Option A: SO2

Option B: H2SO4

Option C: SO3

Option D: SO2 + H2SO4

Correct Answer: SO3 ✔

Option A: Pyrolysis of oil

Option B: Sintering of porous catalyst

Option C: Hydrogen embrittlement

Option D: All A, B. and C.

Correct Answer: D. All A, B. and C. ✔

Option A: Decoloration

Option B: Hydrogenation

Option C: Oxidation

Option D: Purification

Correct Answer: Hydrogenation ✔

Option A: Can be repeatedly melted

Option B: Is useful for melt casting

Option C: Cannot be melted after forming

Option D: Is useful for spinning

Correct Answer: Cannot be melted after forming ✔

Option A: Remove lignin

Option B: Produce long fibres

Option C: Prevent deterioration on storage

Option D: None of these

Correct Answer: Remove lignin ✔

Option A: Inhibits/destroys the growth of microorganisms

Option B: Is used as a pain reliever

Option C: Is an antimalarial

Option D: Is an anaesthetic

Correct Answer: Inhibits/destroys the growth of microorganisms ✔

Option A: Polyvinyl chloride

Option B: Polythene

Option C: Bakelite

Option D: Teflon

Correct Answer: Bakelite ✔

Option A: Exchange of heat with colder stream

Option B: Adiabatic expansion through a throttle valve (Joule-Thomson expansion)

Option C: Adiabatic expansion against a piston or in a turbine

Option D: Merely compressing the gas beyond its critical pressure

Correct Answer: Adiabatic expansion through a throttle valve (Joule-Thomson expansion) ✔

Option A: Na2SO4

Option B: CaSO4

Option C: MgSO4

Option D: BaSO4

Correct Answer: Na2SO4 ✔

Option A: Sodium sulphide & sodium carbonate

Option B: Sodium sulphite & sodium carbonate

Option C: Sodium sulphite & sodium sulphide

Option D: None of these

Correct Answer: Sodium sulphide & sodium carbonate ✔

Option A: Proteins with high molecular weight (around 10,000)

Option B: Derived from living organisms

Option C: Catalyst for temperature sensitive reactions

Option D: All A, B. and C.

Correct Answer: D. All A, B. and C. ✔

Option A: Zinc

Option B: Nickel

Option C: Platinum

Option D: Copper

Correct Answer: Nickel ✔

Option A: Adsorbing on palladium

Option B: Absorbing in ethanolamine

Option C: Scrubbing with wash oil

Option D: Passing it through electrostatic precipitator

Correct Answer: Scrubbing with wash oil ✔

Option A: Nitric acid

Option B: Sulphuric acid

Option C: Ammonium sulphate

Option D: Hydrochloric acid

Correct Answer: Sulphuric acid ✔

Option A: Galena

Option B: Chalcopyrite

Option C: Hematite

Option D: Bauxite

Correct Answer: Hematite ✔

Option A: Hydrogenation

Option B: Oxidation

Option C: Hydrolysis

Option D: Hydrocracking

Correct Answer: Hydrogenation ✔

Option A: Concentrated sulphuric acid

Option B: Oleum

Option C: Sulphurous acid

Option D: Dilute sulphuric acid

Correct Answer: Concentrated sulphuric acid ✔

Option A: Calcium sulphate

Option B: Potassium sulphate

Option C: Potassium chlorate

Option D: None of these

Correct Answer: None of these ✔

Option A: Coke breeze

Option B: Lime powder

Option C: Silica/quartz

Option D: Dolomite

Correct Answer: Silica/quartz ✔

Option A: Thermosetting

Option B: Thermoplastic

Option C: Fibrous

Option D: Chemically active

Correct Answer: Thermoplastic ✔

Option A: V2O5

Option B: Pt

Option C: Ni

Option D: Cr

Correct Answer: V2O5 ✔

Option A: Hydrocyanic acid

Option B: Nicotine

Option C: Sodium fluoride

Option D: Hexane

Correct Answer: Hexane ✔

Option A: 5000 to 10000

Option B: 20000 to 250000

Option C: 500 to 5000

Option D: 106 to 109

Correct Answer: 20000 to 250000 ✔

Option A: NaOH

Option B: H2SO4

Option C: Hydrazine

Option D: Alum solution

Correct Answer: H2SO4 ✔

Option A: Lead oxide

Option B: Silica

Option C: Alumina

Option D: Soda

Correct Answer: Lead oxide ✔

Option A: Ethyl alcohol

Option B: Ethylene

Option C: Both A. & B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. & B. ✔

Option A: Oxidising

Option B: Reducing

Option C: Complex forming

Option D: Photochemical

Correct Answer: Complex forming ✔

Option A: Cationic

Option B: Anionic

Option C: Amphoteric

Option D: Semi polar

Correct Answer: Anionic ✔

Option A: Phosgene

Option B: Calcium hypochlorite

Option C: Chlorine

Option D: Ammonium chloride

Correct Answer: Calcium hypochlorite ✔

Option A: Red

Option B: Yellow

Option C: Violet

Option D: Black

Correct Answer: Yellow ✔

Option A: Alkaline

Option B: Acidic

Option C: Neutral

Option D: None of these

Correct Answer: Alkaline ✔

Option A: Remove impurities/gangue

Option B: Enhance rate of reaction

Option C: Accelerate reduction of ore

Option D: Separate slag from metal

Correct Answer: Remove impurities/gangue ✔

Option A: Activated carbon

Option B: Diatomaceous earth

Option C: Bauxite

Option D: Bentonite

Correct Answer: Activated carbon ✔

Option A: Chromium

Option B: Arsenic

Option C: Copper

Option D: Manganese

Correct Answer: Copper ✔

Option A: Catalytic cracking

Option B: Catalytic dehydrogenation

Option C: Pyrolysis

Option D: Hydrocracking

Correct Answer: Hydrocracking ✔

Option A: Hydration

Option B: Inversion

Option C: Esterification

Option D: None of these

Correct Answer: Inversion ✔

Option A: Impart resistance to penetration by liquids

Option B: Increase its thickness

Option C: Increase its flexibility & opacity

Option D: Increase its brightness

Correct Answer: Impart resistance to penetration by liquids ✔

Option A: Sand to cement ratio

Option B: Water to cement ratio

Option C: Ambient temperature fluctuation

Option D: Drying period

Correct Answer: Sand to cement ratio ✔

Option A: Cold lime process

Option B: Coagulation

Option C: Hot-lime soda process

Option D: Sequestration

Correct Answer: Hot-lime soda process ✔

Option A: Filtration

Option B: Boiling

Option C: Distillation

Option D: None of these

Correct Answer: Distillation ✔

Option A: Teflon

Option B: Bakelite

Option C: Polyester

Option D: Nylon-66

Correct Answer: Bakelite ✔

Option A: Cl2 & Na

Option B: Cl2 & H2

Option C: O2 & H2

Option D: Cl2, H2 & NaOH solution

Correct Answer: Cl2, H2 & NaOH solution ✔

Option A: H2SO3

Option B: H2SO4

Option C: H2S2O7

Option D: H2SO7

Correct Answer: H2S2O7 ✔

Option A: Yields acid of higher concentration than chamber process

Option B: Yields acids of lower concentration than chamber process

Option C: Is obsolete

Option D: Eliminates absorber

Correct Answer: Yields acid of higher concentration than chamber process ✔

Option A: High pressure & low temperature

Option B: Low pressure & high temperature

Option C: High pressure & high temperature

Option D: Low pressure & low temperature

Correct Answer: High pressure & low temperature ✔

Option A: Styrene

Option B: Phenol

Option C: Benzene

Option D: Tri-nitro-toluene

Correct Answer: Phenol ✔

Option A: Controlling timber degradation by ants

Option B: Controlling poultry lice

Option C: Potato beetle

Option D: Citrus fruits

Correct Answer: Citrus fruits ✔

Option A: Extraction with amyl or butyl acetate

Option B: Ternary Azeotropic distillation

Option C: Evaporator in calandria

Option D: Extractive distillation

Correct Answer: Extraction with amyl or butyl acetate ✔

Option A: Viscose rayon

Option B: Corundum

Option C: Plasticiser for unsaturated polyester

Option D: Paints

Correct Answer: Viscose rayon ✔

Option A: SO3 gas is sparingly soluble in water

Option B: Water forms an acid mist, which is difficult to absorb

Option C: The purity of acid is affected

Option D: Scale formation in the absorber is to be avoided

Correct Answer: Water forms an acid mist, which is difficult to absorb ✔

Option A: Phenol formaldehyde

Option B: An inorganic polymer

Option C: Poly tetra-fluoro-ethylene (P.T.F.E.)

Option D: A monomer

Correct Answer: Poly tetra-fluoro-ethylene (P.T.F.E.) ✔

Option A: 5

Option B: 70

Option C: 500

Option D: 1700

Correct Answer: 70 ✔

Option A: Detergents

Option B: Fertilisers

Option C: Aqua regia

Option D: Explosives

Correct Answer: Detergents ✔

Option A: Cellulose nitrate

Option B: Regenerated cellulose nitrate

Option C: Regenerated cellulose acetate

Option D: None of these

Correct Answer: None of these ✔

Option A: Boiling

Option B: Adding Ca(OH)2

Option C: Boiling it with Na2CO3

Option D: None of these

Correct Answer: Boiling ✔

Option A: Cellulose acetate

Option B: Regenerated cellulose

Option C: Cellulose nitrate

Option D: Cellulose acetate butyrate

Correct Answer: Cellulose nitrate ✔

Option A: Impart flexibility

Option B: Improve workability during fabrication

Option C: Develop new improved properties not present in the original resins

Option D: All A, B. and C.

Correct Answer: D. All A, B. and C. ✔

Option A: Adjust the pH of the syrup

Option B: Remove the coloring matter from the syrup

Option C: Reduce the viscosity of the syrup

Option D: Improve the rate of crystallisation of sugar

Correct Answer: Adjust the pH of the syrup ✔

Option A: Silica

Option B: Dissolved oxygen

Option C: Suspended salt

Option D: Dissolved salt

Correct Answer: Silica ✔

Option A: Alexander

Option B: Flaming

Option C: Doctor Zhivago

Option D: None of these

Correct Answer: Alexander ✔

Option A: Polythene

Option B: Phenol formaldehyde

Option C: Poly vinyl chloride

Option D: None of these

Correct Answer: Phenol formaldehyde ✔

Option A: Insecticides

Option B: Analgesic drug

Option C: Fire retardant

Option D: Hydrogenation catalyst

Correct Answer: Fire retardant ✔

Option A: Monosaccharide

Option B: Disaccharide

Option C: Polysaccharide

Option D: None of these

Correct Answer: Disaccharide ✔

Option A: Hardness

Option B: Abrasion/resistance

Option C: Melting point

Option D: None of these

Correct Answer: None of these ✔

Option A: C6H6Cl6

Option B: C6Cl6

Option C: C6H5Cl

Option D: C6H4Cl2

Correct Answer: C6Cl6 ✔

Option A: (NH4)2SO4

Option B: NH4Cl

Option C: (NH4)2 NO3

Option D: Liquid NH3

Correct Answer: (NH4)2SO4 ✔

Option A: 10

Option B: 25

Option C: 50

Option D: 98

Correct Answer: 10 ✔

Option A: 10

Option B: 50

Option C: 80

Option D: 95

Correct Answer: 50 ✔

Option A: Producer gas

Option B: Water gas

Option C: Coke oven gas

Option D: All A., B. and C.

Correct Answer: D. All A., B. and C. ✔

Option A: A volatile alkaloid

Option B: Obtained by treating by-products of the tobacco processing industry

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. and B. ✔

Option A: SO3 and 80kg of H2SO4

Option B: H2SO4 and 80kg of SO3

Option C: SO3 for each 100 kg of H2SO4

Option D: None of these

Correct Answer: SO3 and 80kg of H2SO4 ✔

Option A: Continuous

Option B: Aerobic batch

Option C: Anaerobic batch

Option D: None of these

Correct Answer: Aerobic batch ✔

Option A: Presence of air

Option B: Absence of air

Option C: High concentration

Option D: Presence of ammonium salts

Correct Answer: High concentration ✔

Option A: Light soda ash

Option B: Dense soda ash

Option C: Sodium bicarbonate

Option D: Dehydrated soda ash

Correct Answer: Light soda ash ✔