A. Detergents

B. Fertilisers

C. Aqua regia

D. Explosives

A. Are absorbed throughout the plant

B. Kill insects following external bodily contact

C. Are stomach poisons

D. Emit poisonous vapour

A. Can be repeatedly melted

B. Is useful for melt casting

C. Cannot be melted after forming

D. Is useful for spinning

A. A black, sticky & viscous liquid

B. Used in the manufacture of greases, emulsions & soaps

C. Composed mainly of rosin & fatty acids

D. All (A), (B) & (C)

A. Condensation product of Hexamethylene diamine and adipic acid

B. Thermosetting material

C. Condensation product of dimethyl terephthalate and ethylene glycol

D. None of these

A. Act as an acidifying agent

B. Increase its concentration

C. Increase the amount of molasses

D. Increase the crystal size

A. Freeze drying

B. Electrolytic

C. Solar evaporation

D. Vacuum evaporation

A. Nitric acid

B. Hydrochloric acid

C. Methyl alcohol

D. Formic acid

A. Extrusion

B. Mastication

C. Calendaring

D. Vulcanisation

A. Alumina

B. Silica gel

C. Platinum

D. Nickel

A. Is a good adhesive

B. Is an elastomer

C. Cannot be used for surface coatings

D. Is a polyester

A. Coagulation

B. Sedimentation

C. Softening

D. Disinfection

A. Detergent

B. Plasticiser for unsaturated polyester

C. Starting material for the synthesis of glycerine

D. Coating ingredient for photographic film

A. Poorer tensile strength

B. Poorer resistance to oxidation

C. Greater amount of heat build-up under heavy loading

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

A. Bicarbonates & sulphates of calcium and magnesium

B. Undesirable taste and odour

C. Bacteria

D. Its corrosiveness

A. Avoid its decomposition

B. Prevent sulphonation of the monochlorobenzene by the acid catalyst

C. Achieve non-hygroscopic property

D. None of these

A. Cement

B. Lime from limestone

C. Slaked lime from quick lime

D. None of these

A. Exchange of heat with colder stream

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

C. Adiabatic expansion against a piston or in a turbine

D. Merely compressing the gas beyond its critical pressure

A. Chamber process of sulphuric acid manufacture produces pure acid of concentration < 80%

B. Contact process of sulphuric acid manufacture produces pure acid of concentration ≥ 98%

C. 75% oleum can be produced by distillation of 20% oleum

D. Contact process of sulphuric acid manufacture uses nickel as the catalyst

A. 10² - 10²

B. 10⁵ - 10⁹

C. 10² - 10⁷

D. 10⁹ - 10¹¹

A. Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate

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

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

D. Red color is imparted to glass by addition of arsenic oxide

A. Storage & shipment of frozen foods and ice-creams

B. Liquefaction of permanent gases

C. Liquefaction of natural gas

D. None of these

A. Same as Dacron

B. A polyester

C. Both (A) & (B)

D. Neither (A) nor (B)

A. Sodium silicate

B. Sodium borate

C. Sodium tripolyphosphate (STPP)

D. Caustic soda

A. Cellulose nitrate

B. Regenerated cellulose nitrate

C. Regenerated cellulose acetate

D. None of these

A. Washing soda

B. Soda ash

C. Slaked lime

D. Quicklime

A. Coking coals cannot be used

B. Low carbon conversion efficiency is achieved

C. Entrainment of solids is higher

D. Large quantity of coal can be processed

A. Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures

B. Reduces sulphate ions to sulphides causing obnoxious smell

C. Increases the quantity of chlorine used for its purification

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

A. Hydrocyanic acid

B. Nicotine

C. Sodium fluoride

D. Hexane

A. H₂SO₃

B. H₂SO₄

C. H₂S₂O₇

D. H₂SO₇

A. Lead

B. Cement

C. Carbon disulphide

D. None of these