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Current Affairs January 2024

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4

Hydrazine (N2H4) is used mainly as a/an

A. Explosive

B. Rocket fuel

C. Detergents additive

D. None of these

Correct Answer :

B. Rocket fuel


Related Questions

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4

Dry ice (solidified CO2) is used for the

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

B. Liquefaction of permanent gases

C. Liquefaction of natural gas

D. None of these

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4

Neoprene is chemically known as

A. Polybutadiene

B. Styrene butadiene rubber (SBR)

C. Polyurethane

D. Polychlorophrene

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4

Sea weeds are an important source of

A. Fluorine

B. Chlorine

C. Bromine

D. Iodine

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The major constituent of black liquor generated during paper manufacture is sodium

A. Sulphate

B. Carbonate

C. Hydroxide

D. Bi-carbonate

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Sizing material is incorporated in paper to

A. Impart resistance to penetration by liquids

B. Increase its thickness

C. Increase its flexibility & opacity

D. Increase its brightness

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At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).

A. P

B. √P

C. P2

D. 1/P

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4

Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like

A. High cost

B. Fragile nature

C. Easy poisoning tendency

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

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4

Transparent soaps (e.g. Pears) are

A. Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency

B. Metallic soaps with frothing agent and free Stearic acid to achieve transparency

C. Metallic soaps with frothing agent from which glycerine has not been recovered

D. None of these

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4

Which of the following is an yellow pigment?

A. Titanium dioxide

B. Ferrous sulphate

C. Lead chromates

D. Zinc sulphides

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The most reactive allotropic form of phosphorus is __________ phosphorus.

A. Red

B. Yellow

C. Violet

D. Black

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Mannheim furnace is used in the manufacture of

A. Hydrochloric acid

B. H2SO4 by Chamber process

C. Calcium carbide

D. Corundum

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4

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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4

Which of the following is a detergent?

A. Benzene hexachloride

B. Alkyl benzene sulphonate

C. Polytetrafluoroethylene

D. Cellulose nitrate

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Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process?

A. NH3

B. NaCl

C. CaO

D. Coke

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4

Coke oven gas consists mainly of

A. H2, & CH4

B. CO, & CO2

C. H2, & CO

D. CH4, & CO

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4

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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4

During the manufacture of sulphuric acid, the temperature of molten sulphur is not increased beyond 160°C, as

A. It is very corrosive at elevated temperature

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

C. It decomposes on further increasing the temperature

D. None of these

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4

In Kraft process of paper manufacture, white cooking liquor consists of caustic soda

A. Sodium sulphide & sodium carbonate

B. Sodium sulphite & sodium carbonate

C. Sodium sulphite & sodium sulphide

D. None of these

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4

Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulfonic acid produces sodium dodecylbenzene sulphate, which is a/an

A. Explosive

B. Soap

C. Detergent

D. Analgesic drug

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4

Conversion of CO to CO2 by steam in presence of a catalyst is called

A. Steam reforming

B. Shift conversion

C. Steam gasification

D. None of these

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4

Oxygen is produced by fractionation of air using __________ process.

A. Linde's

B. Claude's

C. Either (A) or (B)

D. None of these

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4

Synthesis gas is a mixture of

A. CO and H2

B. N2 and H2

C. H2, CH4 and CO

D. CO2 and H2

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Phthalic anhydride is produced by the oxidation of

A. Naphthalene

B. Benzene

C. Toluene

D. Aniline

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4

Neoprene is a

A. Monomer

B. Synthetic rubber

C. Polyester

D. None of these

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4

Penicillin is separated from fermented broth by

A. Extraction with amyl or butyl acetate

B. Ternary Azeotropic distillation

C. Evaporator in calandria

D. Extractive distillation

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4

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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Which of the following is the purest form of water out of the following?

A. Underground water

B. Rain water

C. Well water

D. Lake water

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Nickel is not used as a catalyst in the __________ reaction.

A. Shift conversion

B. Oil hydrogenation

C. Steaming reforming of naphtha

D. Ammonia cracking/dissociation

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4

A good quality coal should have

A. Low fusion point of ash

B. High ash content

C. High sulphur content

D. None of these

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Starting raw material for the manufacture of alum is

A. Alumina

B. Gypsum

C. Bauxite

D. Ammonium bicarbonate