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Current Affairs January 2024

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Acrylonitrile is mainly used in the __________ industry.

A. Polymer

B. Printing

C. Dyeing

D. Photographic

Correct Answer :

C. Dyeing


Related Questions

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Neon gas is

A. Flammable in nature

B. Used in color discharge tube

C. Filled in lamps having tungsten filament

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

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Styrene is produced from ethyl benzene by the process of

A. Dehydrogenation

B. Oxidation

C. Alkylation

D. Dehydration

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Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart greenish blue color to the glass.

A. Chromium

B. Arsenic

C. Copper

D. Manganese

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Salt is added in the kettle during soap manufacture to separate

A. Soap from lye

B. Glycerine from lye

C. The metallic soap

D. The unsaponified fat from soap

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Black liquor is converted into white liquor by

A. Evaporation and burning the concentrate followed by causticisation of products

B. Multi-effect evaporation only

C. Selective liquid extraction

D. Extractive distillation

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Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at

A. 1 atm & 100°C

B. 5 atm & 275°C

C. 100 atm & 500°C

D. 50 atm & 1000°C

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Starting material for the production of styrene butadiene rubber (SBR) is

A. Ethyl alcohol

B. Ethylene

C. Both (A) & (B)

D. Neither (A) nor (B)

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Which of the following is an additional step in the manufacture of paper from bagasse as compared to that from bamboo?

A. Depithing

B. Digestion

C. Bleaching

D. None of these

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__________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.

A. Chlorine

B. Ammonium chloride

C. Sodium carbonate

D. Sodium bi-carbonate

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Solvent used for extraction of oil is

A. Hexane

B. Methyl ethyl ketone

C. Furfural

D. None of these

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Zeolite is a/an

A. Naturally occuring clay which is capable of exchanging cations

B. Abrasive material

C. Catalyst used in shift conversion

D. None of these

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__________ of rubber decreases after its vulcanisation.

A. Resistance to the action of organic solvent

B. Tackiness

C. Maximum service temperature

D. Tensile strength

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High purity nitrogen is used in

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

B. Fire fighting purposes

C. Both (A) & (B)

D. Neither (A) nor (B)

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Average sulphur content in Indian pyrites is about __________ percent.

A. 15

B. 35

C. 55

D. 70

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Polythene is a/an __________ polymerisation product.

A. Addition

B. Condensation

C. Thermosetting

D. None of these

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Which of the following paper does not require a filler during manufacture?

A. Bond paper

B. Writing paper

C. Blotting paper

D. Coloured paper

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Fourdrinier machine is used in the manufacture of

A. Sugar

B. Paper

C. Alcohol from molasses

D. Phenol formaldehyde

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__________ is a thermosetting plastic.

A. Polyvinyl chloride

B. Polythene

C. Bakelite

D. Teflon

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Digestion of wood-base materials (for manufacture of pulp) is done to

A. Remove lignin

B. Produce long fibres

C. Prevent deterioration on storage

D. None of these

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Presence of carbonaceous matter in the sewage

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)

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__________ is an ore concentrating metallurgical process involving a chemical change.

A. Electromagnetic separation

B. Froth floatation

C. Roasting

D. None of these

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Enzymes are

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

B. Derived from living organisms

C. Catalyst for temperature sensitive reactions

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

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Molecular weights of polymers are in the range of

A. 102 - 102

B. 105 - 109

C. 102 - 107

D. 109 - 1011

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Thermosetting plastic materials

A. Can be repeatedly melted

B. Is useful for melt casting

C. Cannot be melted after forming

D. Is useful for spinning

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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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Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively

A. V2O5 & Cr2O3.

B. Oxides of nitrogen & Cr2O3

C. V2O5 on a porous carrier & oxides of nitrogen

D. Oxides of nitrogen & V2O5 on a porous carrier

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Fourdrinier machine is used in the manufacture of

A. Nylon-6

B. Paper

C. Antibiotics

D. Sugar

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Which form of sulphur is the most stable at room temperature?

A. Plastic

B. Monoclinic

C. Rhombic

D. Flowers of sulphur

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Resistance to fusion of the refractory under a steady rising temperature condition is called

A. Spalling

B. Refractoriness

C. Both (A) & (B)

D. Neither (A) nor (B)

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Presence of H2S in raw water (to be chlorinated) results in the

A. Reduced softening capacity of zeolite

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

C. Easy removal of its hardness

D. None of these