Chemical Process MCQs

Option A: High early strength cement are made from materials having high silica to lime ratio

Option B: The function of gypsum in cement is to enhance its initial setting rate

Option C: Acid resistant cements are known as silicate cement

Option D: Major component of greyish Portland cement is tricalcium silicate

Correct Answer: High early strength cement are made from materials having high silica to lime ratio ✔

Option A: DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence

Option B: Chloral is obtained by the chlorination of ethyl alcohol

Option C: Insecticides acting on the insects through the respiratory system are called fumigants

Option D: Benzene hexachloride is not a contact insecticide

Correct Answer: Benzene hexachloride is not a contact insecticide ✔

Option A: A fat is converted into oil by its hydrogenation

Option B: There is no difference between a fat and an oil so far as its physical properties are concerned

Option C: All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon

Option D: Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their

Correct Answer: C. All vegetable oils except coconut oil, contains fatty acids having more than sixteen carbon
atoms ✔

Option A: Eosin requirement in tallow soap is about 40-50% which fastens the lather formation, softens

Option B: Soap powder is prepared by mixing soap with hydrated sodium carbonate

Option C: Detergents differ from soaps in their action in hard water

Option D: Tarnish inhibitor (e.g., Benzotriazole) is added in soap to facilitate the removal of stains due

Correct Answer: D. Tarnish inhibitor (e.g., Benzotriazole) is added in soap to facilitate the removal of stains due
to tea, blood etc ✔

Option A: 50

Option B: 70

Option C: 95

Option D: 80

Correct Answer: 95 ✔

Option A: Before filtration, reduces the bacterial load on filters

Option B: After filtration, combats the corrosiveness of water due to the presence of O2 & CO2

Option C: Is to adjust the pH value

Option D: All A , B. and C.

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

Option A: Ethyl magnesium chloride

Option B: Methyl magnesium chloride

Option C: Dichlorophenol

Option D: Monochloroacetic acid

Correct Answer: Ethyl magnesium chloride ✔

Option A: Phthalic anhydride

Option B: Vinyl chloride

Option C: Maleic anhydride

Option D: Dacron

Correct Answer: Vinyl chloride ✔

Option A: Pesticides

Option B: Plasticisers for unsaturated polyesters

Option C: Pain-relieving drugs (analgesic)

Option D: Tranquilisers

Correct Answer: Pesticides ✔

Option A: Bromine

Option B: Magnesium compounds

Option C: Potassium compounds

Option D: Sodium sulphate

Correct Answer: Sodium sulphate ✔

Option A: Fat

Option B: Naphthalene

Option C: Cumene

Option D: Sucrose

Correct Answer: Fat ✔

Option A: Bi-carbonates

Option B: Sulphates & chlorides

Option C: Carbonate

Option D: None of these

Correct Answer: Sulphates & chlorides ✔

Option A: Minimises its turbidity

Option B: Helps in controlling its taste and odour

Option C: Minimises its corrosiveness

Option D: None of these

Correct Answer: Minimises its corrosiveness ✔

Option A: Corrosion

Option B: Sequestration

Option C: Scale formation

Option D: None of these

Correct Answer: Corrosion ✔

Option A: Nylon-6

Option B: Dacron

Option C: Polyester

Option D: PVC

Correct Answer: Dacron ✔

Option A: Low co-efficient of expansion

Option B: High co-efficient of expansion

Option C: High melting point

Option D: Both B. and (C)

Correct Answer: Low co-efficient of expansion ✔

Option A: Caffeine

Option B: Nicotine

Option C: Calgon

Option D: Lignin

Correct Answer: Caffeine ✔

Option A: Better heat & acid resistant properties

Option B: Poorer resistance to alkalis

Option C: Poorer dyeability

Option D: All A , B. and C.

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

Option A: Freeze drying

Option B: Electrolytic

Option C: Solar evaporation

Option D: Vacuum evaporation

Correct Answer: Freeze drying ✔

Option A: 50

Option B: 100

Option C: 200

Option D: 300

Correct Answer: 200 ✔

Option A: Bleaching powder

Option B: Slaked lime

Option C: Alum

Option D: Copper sulphate

Correct Answer: Alum ✔

Option A: Sulphate

Option B: Carbonate

Option C: Hydroxide

Option D: Bi-carbonate

Correct Answer: Carbonate ✔

Option A: 5

Option B: 20

Option C: 40

Option D: 60

Correct Answer: 5 ✔

Option A: Hydration

Option B: Decomposition

Option C: Oxidation

Option D: Reduction

Correct Answer: Hydration ✔

Option A: Endothermic

Option B: Autocatalytic

Option C: Exothermic

Option D: Homogenous

Correct Answer: Exothermic ✔

Option A: Linde’s

Option B: Claude’s

Option C: Either A. or B.

Option D: None of these

Correct Answer: C. Either A. or B. ✔

Option A: Mechanical

Option B: Sulphate/Kraft

Option C: Sulphite

Option D: Neutral sulphite semi-chemical

Correct Answer: Neutral sulphite semi-chemical ✔

Option A: Toluene

Option B: Phenol

Option C: Propylene

Option D: Naphthalene

Correct Answer: Propylene ✔

Option A: Has low free fatty acid content

Option B: Is odourless

Option C: Both A. & B.

Option D: Neither A. nor B.

Correct Answer: D. Neither A. nor B. ✔

Option A: Final rolling out of paper

Option B: Cutting of fibres

Option C: Hydration of fibres

Option D: Fibrillation of fibre

Correct Answer: Final rolling out of paper ✔

Option A: Around 10% alcohol

Option B: Around 1% acetic acid

Option C: Both A. and B.

Option D: Neither A. nor B.

Correct Answer: C. Both A. and B. ✔

Option A: Propyl alcohol

Option B: Acetone

Option C: Trichloroethylene

Option D: Formaldehyde

Correct Answer: Acetone ✔

Option A: Oxidation of naphthalene

Option B: Oxidation of benzene

Option C: Dehydrogenation of ethyl benzene

Option D: None of these

Correct Answer: Oxidation of naphthalene ✔

Option A: Exothermic

Option B: Endothermic

Option C: Not possible

Option D: None of these

Correct Answer: Exothermic ✔

Option A: Na2CO3

Option B: Na2CO3.H2O

Option C: Na2CO3.10H2O

Option D: NaHCO3

Correct Answer: Na2CO3 ✔

Option A: Less than

Option B: More than

Option C: Same

Option D: None of these

Correct Answer: Less than ✔

Option A: CaSO4.½H2O

Option B: Used for setting of broken bones

Option C: Both A. and B.

Option D: Same as gypsum

Correct Answer: C. Both A. and B. ✔

Option A: Copper sulphate

Option B: Ferrous sulphate

Option C: Copper nitrate

Option D: Aluminium sulphate

Correct Answer: Copper sulphate ✔

Option A: Fertiliser

Option B: Steel

Option C: Paper

Option D: Paint

Correct Answer: Fertiliser ✔

Option A: Fatty alcohol

Option B: Alkyl benzene sulphonate (ABS)

Option C: Fatty acids

Option D: Methylene chloride

Correct Answer: Alkyl benzene sulphonate (ABS) ✔

Option A: A slow reaction

Option B: A discontinuous reaction (requiring regeneration of iron by water gas intermittently)

Option C: Still in development stage (by employing fluidised bed technique)

Option D: All A , B. and C

Correct Answer: D. All A , B. and C ✔

Option A: Adhesive

Option B: Abrasive

Option C: Type of glass

Option D: Brittle material

Correct Answer: Abrasive ✔

Option A: Caustic soda

Option B: Soda ash

Option C: Bromine from sea water

Option D: Hydrochloric acid

Correct Answer: Soda ash ✔

Option A: Substrate

Option B: Enzyme

Option C: Nutrient

Option D: None of these

Correct Answer: Enzyme ✔

Option A: Metals

Option B: Alloys

Option C: Refractories

Option D: Non-metals

Correct Answer: Refractories ✔

Option A: Calcium chloride

Option B: Potassium sulphate

Option C: Sodium sulphate

Option D: Calcium sulphate

Correct Answer: Calcium sulphate ✔

Option A: Used in glycerine manufacture

Option B: An explosive

Option C: Used in dye manufacture

Option D: None of these

Correct Answer: An explosive ✔

Option A: Chlorine

Option B: Ferric sulphate

Option C: Calcium sulphate

Option D: Activated carbon

Correct Answer: Ferric sulphate ✔

Option A: Jena

Option B: Flint

Option C: Crookes

Option D: Pyrex

Correct Answer: Flint ✔

Option A: Cutting

Option B: Fibrillation

Option C: Hydration

Option D: Strengthening

Correct Answer: Strengthening ✔

Option A: Used for paper making

Option B: Used as a cattle feed

Option C: Highly acidic in nature

Option D: None of these

Correct Answer: None of these ✔

Option A: Soap

Option B: Metallic soap

Option C: Detergent

Option D: Alkaloid

Correct Answer: Metallic soap ✔

Option A: Sucrose

Option B: Glucose

Option C: Starch

Option D: Maltose

Correct Answer: Sucrose ✔

Option A: Is prone to thermal decomposition

Option B: Has high water solubility and is unstable

Option C: Is soluble in ammonium chloride and potassium chloride solution

Option D: All A , B. and C.

Correct Answer: Is soluble in ammonium chloride and potassium chloride solution ✔

Option A: Water

Option B: Liquid ammonia

Option C: Kerosene oil

Option D: Alcohol

Correct Answer: Kerosene oil ✔

Option A: Antibiotic

Option B: Antiseptic

Option C: Disinfectant

Option D: None of these

Correct Answer: ✔

Option A: Hydrogenation

Option B: Esterification

Option C: Saponification

Option D: None of these

Correct Answer: Saponification ✔

Option A: Same as Polytetrafluoroethylene (PTFE)

Option B: An inorganic polymer

Option C: Same as thermosetting phenol-formaldehyde

Option D: Not a polymer

Correct Answer: Same as thermosetting phenol-formaldehyde ✔

Option A: Fluorine

Option B: Chlorine

Option C: Bromine

Option D: Iodine

Correct Answer: Iodine ✔

Option A: Vitamin

Option B: Analgesic drug

Option C: Anaesthetics

Option D: Anti-malarial drug

Correct Answer: Vitamin ✔

Option A: Moving

Option B: Fixed

Option C: Fluidised

Option D: Entrained

Correct Answer: Moving ✔

Option A: Low fusion point of ash

Option B: High ash content

Option C: High sulphur content

Option D: None of these

Correct Answer: None of these ✔

Option A: H2, & CH4

Option B: CO, & CO2

Option C: H2, & CO

Option D: CH4, & CO

Correct Answer: H2, & CH4 ✔

Option A: Increasing the surface tension

Option B: Decreasing wettability

Option C: Supplying hydrophilic group

Option D: None of these

Correct Answer: None of these ✔

Option A: 70

Option B: 55

Option C: 80

Option D: 94

Correct Answer: 94 ✔

Option A: Penicillin

Option B: Antibiotics

Option C: Wine

Option D: Pasteurised milk

Correct Answer: Wine ✔

Option A: Sulphur

Option B: Bromine

Option C: Platinum

Option D: Alumina

Correct Answer: Sulphur ✔

Option A: Are absorbed throughout the plant

Option B: Kill insects following external bodily contact

Option C: Are stomach poisons

Option D: Emit poisonous vapour

Correct Answer: Are absorbed throughout the plant ✔

Option A: Sodium thiosulphate

Option B: Ethyl magnesium chloride

Option C: Sodium sulphite

Option D: Sodium bicarbonate

Correct Answer: Ethyl magnesium chloride ✔

Option A: Naphthalene

Option B: Benzene

Option C: Toluene

Option D: Aniline

Correct Answer: Benzene ✔

Option A: 0.1 to 0.5

Option B: 1 to 5

Option C: 5 to 10

Option D: 15 to 25

Correct Answer: 0.1 to 0.5 ✔

Option A: Laminates

Option B: Card boxes

Option C: Furniture

Option D: Books

Correct Answer: Laminates ✔

Option A: It is very corrosive at elevated temperature

Option B: Its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be

Option C: It decomposes on further increasing the temperature

Option D: None of these

Correct Answer: B. Its viscosity is not reduced on further heating (hence pressure drop on pumping it, cannot be
further reduced) ✔

Option A: Butyl alcohol

Option B: Propyl alcohol

Option C: Ethanol

Option D: Methyl alcohol

Correct Answer: Ethanol ✔

Option A: Sulphur

Option B: Charcoal

Option C: Potassium nitrate

Option D: All A , B, & C.

Correct Answer: D. All A , B, & C. ✔

Option A: Phosphate rock with phosphoric acid

Option B: Phosphate rock with sulphuric acid

Option C: Phosphate rock with nitric acid

Option D: Ammonium phosphate with phosphoric acid

Correct Answer: Phosphate rock with phosphoric acid ✔

Option A: 15

Option B: 35

Option C: 55

Option D: 70

Correct Answer: 35 ✔

Option A: Bakelite

Option B: Teflon

Option C: Celluloid

Option D: Dacron

Correct Answer: Teflon ✔

Option A: Carbon, hydrogen, nitrogen & sulphur

Option B: Carbon, ash, sulphur & nitrogen

Option C: Carbon, sulphur, volatile matter & ash

Option D: Carbon, volatile matter, ash & moisture

Correct Answer: Carbon, sulphur, volatile matter & ash ✔

Option A: Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)

Option B: Inhibits its corrosive effects

Option C: Does not allow redeposition of dirt on the cleaned surface

Option D: None of these

Correct Answer: Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions) ✔

Option A: Distillation

Option B: Dehydration

Option C: Dehydrogenation

Option D: None of these

Correct Answer: None of these ✔

Option A: Perspex

Option B: Nylon-66

Option C: Polystyrene

Option D: Bakelite

Correct Answer: Nylon-66 ✔

Option A: 10

Option B: 40

Option C: 70

Option D: 85

Correct Answer: 40 ✔

Option A: Exchange of heat with colder stream

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

Option C: Merely compressing it beyond critical pressure

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

Correct Answer: Merely compressing it beyond critical pressure ✔

Option A: Benzoic acid

Option B: Phenol and acetone

Option C: Isoprene

Option D: Styrene

Correct Answer: Phenol and acetone ✔

Option A: Fat

Option B: Explosive

Option C: Plasticiser

Option D: Rocket propellant

Correct Answer: Fat ✔

Option A: 70

Option B: 640

Option C: 1875

Option D: 2500

Correct Answer: 70 ✔

Option A: Blue vitriol

Option B: Gypsum

Option C: Calcium silicate

Option D: Calcium sulphate

Correct Answer: Gypsum ✔

Option A: Rosin

Option B: Borax

Option C: Benzyl acetate

Option D: Sodium carbonate

Correct Answer: Borax ✔

Option A: Na2SO4.10H2O

Option B: CaCl(OCl)

Option C: CaSO4.H2O

Option D: (NH4)2SO4

Correct Answer: Na2SO4.10H2O ✔

Option A: Gypsum

Option B: Silicates

Option C: Sodium silicate

Option D: Carbonates

Correct Answer: Silicates ✔

Option A: Permit the use of alum as a coagulant

Option B: Increase the softening capacity of zeolite

Option C: Facilitate easy regeneration of zeolite

Option D: All A , B. and C.

Correct Answer: Permit the use of alum as a coagulant ✔

Option A: Brine

Option B: Chloramines

Option C: Sodium bisulphite

Option D: Liquid chlorines

Correct Answer: Brine ✔

Option A: Quicklime

Option B: Slaked lime

Option C: Milk of lime

Option D: None of these

Correct Answer: Slaked lime ✔

Option A: Xanthates

Option B: Stearic acid

Option C: Calcium & aluminium stearate

Option D: Formic acid

Correct Answer: Calcium & aluminium stearate ✔

Option A: Hard

Option B: Soft

Option C: Metallic

Option D: Lubricating

Correct Answer: Soft ✔

Option A: Decreases with decrease of thickness of the flakes

Option B: Increases with the increasing flake size keeping the flake thickness constant

Option C: Increases considerably with the rise of temperature

Option D: Decreases as the moisture content of flakes increases

Correct Answer: Decreases as the moisture content of flakes increases ✔

Option A: As a starting material for ‘hypo’

Option B: In photographic industry

Option C: As rocket fuel

Option D: In printing industry

Correct Answer: As rocket fuel ✔

Option A: Decreases its tensile strength

Option B: Increases its ozone & oxygen reactivity

Option C: Increases its oil & solvent resistance

Option D: Converts its plasticity into elasticity

Correct Answer: Converts its plasticity into elasticity ✔

Option A: 500°C

Option B: 750°C

Option C: 1000°C

Option D: 1500°C

Correct Answer: 1000°C ✔