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Current Affairs January 2024

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4

In the production of soda ash by Solvay process, the by-product is

A. CaCl2

B. NH4Cl

C. NH3

D. NaOH

Correct Answer :

A. CaCl2


Related Questions

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4

Pick out the wrong statement.

A. DDT is manufactured by the condensation of chlorobenzene with chloral at 30°C in presence of oleum, which is a highly exothermic reaction

B. Chloral is obtained by the chlorination of ethyl alcohol

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

D. Benzene hexachloride is not a contact insecticide

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4

Widely used method for the conditioning of boiler feed water is the

A. Cold lime process

B. Coagulation

C. Hot-lime soda process

D. Sequestration

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4

Conversion of SO2 to SO3 in Monsanto 4-pass converter is about __________ percent.

A. 80

B. 90

C. 98

D. 100

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4

Litharge is

A. Lead oxide

B. Zinc oxide

C. Zinc sulphide

D. Cellulosic photographic material

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4

Fermentator temperature during production of alcohol from molasses is around __________ °C.

A. 5

B. 30

C. 130

D. 300

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4

Exothermic condensation reaction of monochlorobenzene with chloral in presence of 20% oleum as catalyst produces DDT. The reaction temperature is maintained at __________ °C.

A. 15-30

B. 90-100

C. 250-300

D. < 0

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4

Bleaching of paper pulp is done with

A. Activated clay

B. Bromine

C. Chlorine or chlorine dioxide

D. Magnesium sulphite

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4

Ethanol amine is produced using ammonia and

A. Ethyl benzene

B. Ethylene oxide

C. Ethanol

D. Ethane

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4

Low temperature carbonisation of coal takes place at __________ °C.

A. 300

B. 1100

C. 700

D. 900

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4

Sulphuric acid completely saturated with sulphur trioxide is called

A. Concentrated sulphuric acid

B. Oleum

C. Sulphurous acid

D. Dilute sulphuric acid

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4

Pick out the wrong statement. Iodine value of an oil or fat is

A. The number of grams of iodine taken up by 100 gm of oil or fat

B. A measure of its unsaturation

C. Helpful in findings its adulteration & its suitability for making soap

D. Independent of the type of oil, whether it is drying or non-drying

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4

Calgon used in water treatment is chemically

A. Sodium phosphate

B. Sodium hexametaphosphate

C. Calcium phosphate

D. Tricresyl phosphate

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4

Polycaprolactam is commercially known as

A. Nylon-6

B. Nylon-66

C. Dacron

D. Rayon

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4

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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4

Nickel is not used as a catalyst in the

A. Fischer-Tropsch process

B. Shift conversion

C. Hydrogenation of oil

D. Ostwald's process of HNO3 manufacture

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4

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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4

Pick out the correct statement.

A. A fat is converted into oil by its hydrogenation

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

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

D. Vegetable oils are classified as drying, non-drying and semi drying oils depending upon their fatty acids content

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4

__________ is used as a catalyst in fat splitting.

A. ZnO

B. Ni

C. V2O5

D. FeO

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4

Reaction of calcium carbide with water produces a gas, which is used

A. As an illuminant

B. For metal cutting/welding

C. Both (A) & (B)

D. Neither (A) nor (B)

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4

Esterification reaction produces

A. Detergent

B. Vanaspati

C. Soap

D. Mercaptans

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4

Maleic anhydride is produced by catalytic oxidation of

A. Toluene

B. Ethyl alcohol

C. Naphthalene

D. Benzene

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4

Hydrogenation of oil/fat does not

A. Improve its resistance to rancid oxidation

B. Raise its melting point

C. Remove double bonds

D. None of these

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4

Fat splitting catalyst is

A. CaCO3

B. ZnO

C. Al2O3

D. Fe

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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

Gun powder, which is an explosive comprises of charcoal, sulphur and

A. Glycerine

B. Salt petre

C. Nitro glycerine

D. Dynamite

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4

The basic constituent of vegetable oils is

A. Triglyceride

B. Fatty acids

C. Fatty alcohol

D. Mono esters

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4

Which of the following is a constituent of coffee?

A. Caffeine

B. Nicotine

C. Calgon

D. Lignin

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4

Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil.

A. Drying

B. Semi-drying

C. Non-drying

D. None of these

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4

Solvent used for extraction of oil is

A. Hexane

B. Methyl ethyl ketone

C. Furfural

D. None of these

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4

Sulphur addition in soap is done to

A. Improve the soap texture

B. Cure pimples & dandruff

C. Fasten lather formation

D. Increase its cleansing action