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4

Nylon-6 is a

A. Polyamide

B. Thermosetting resin

C. Polyester

D. None of these

Correct Answer :

A. Polyamide


Related Questions

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Which of the following is an explosive?

A. Nitro-glycerine

B. Trinitrotoluene (TNT)

C. Cellulose nitrate

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

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4

In industrial nomenclature, alcohol means

A. Butyl alcohol

B. Propyl alcohol

C. Ethanol

D. Methyl alcohol

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4

The most commonly used substance to speed up the sedimentation of sewage is

A. Lime

B. Sulphuric acid

C. Chlorine

D. Sodium bisulphite

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4

Which of the following processes is absent in glass manufacturing process?

A. Sintering

B. Annealing

C. Shaping or forming

D. Melting

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4

Styrene-butadiene-rubber (SBR) as compared to natural rubber has

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)

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4

At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.

A. Independent of

B. Directly proportional to

C. Inversely proportional to

D. Proportional to the square of

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4

10% oleum comprises of 10% free

A. SO2

B. H2SO3

C. SO3

D. H2SO4

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4

Oils and fats are converted to soap in a process called

A. Hydrogenation

B. Esterification

C. Saponification

D. None of these

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Soaps remove dirt by

A. Increasing the surface tension

B. Decreasing wettability

C. Supplying hydrophilic group

D. None of these

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4

__________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace.

A. Bauxite

B. Limestone

C. Quartz

D. Manganese

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4

Flash point of most vegetable oils is about __________ °C.

A. 50

B. 100

C. 200

D. 300

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4

Which of the following impurities in feed water for high pressure boiler is the most detrimental?

A. Silica

B. Dissolved oxygen

C. Suspended salt

D. Dissolved salt

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4

Viscose rayon

A. Cannot be made from sulphite pulp

B. Utilises H2SO4, NaOH and CS2 during its manufacture

C. Cannot yield textile grade fibre

D. None of these

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4

Catalyst used in the oxidation of benzene to produce Maleic anhydride is

A. V2O5

B. Pt

C. Ni

D. Cr

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Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have

A. High electrical insulation properties

B. Sharp melting points

C. Low co-efficient of thermal expansion

D. Compressive strength much greater than their tensile strengths

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4

Paper grade bamboo contains about __________ percent cellulose.

A. 5

B. 20

C. 40

D. 60

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4

__________ process is used for the manufacture of sodium carbonate by ammonia soda process.

A. Ostwald's

B. Bosch

C. Solvay

D. Haber's

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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

Phosphoric acid is prepared from

A. Cryolite

B. Chalcopyrite

C. Rock phosphate

D. None of these

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4

Bromine content in sea water may be around __________ ppm.

A. 70

B. 640

C. 1875

D. 2500

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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

Glycerine is not used in the

A. Manufacture of explosive

B. Conditioning and humidification of tobacco

C. Manufacture of pharmaceuticals

D. None of these

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4

Vegetable oils and fats basically differ in their

A. Density ranges

B. Physical state

C. Chemical composition

D. Chemical properties

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4

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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4

Concentration of NaOH solution produced by mercury electrolytic cell is about __________ percent.

A. 10

B. 25

C. 50

D. 98

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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

Maleic anhydride is produced by catalytic oxidation of

A. Toluene

B. Ethyl alcohol

C. Naphthalene

D. Benzene

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4

Main use of hydrazine is

A. As a rocket fuel

B. In water treatment

C. As a disinfectant

D. As fire retardant

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4

Esterification reaction

A. Produces soap

B. Is reversible

C. Is a reaction between an alcohol and an organic acid

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

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4

The end bleaching agent used to move last traces of colour bodies from the pulp is

A. Chlorine dioxide (ClO2)

B. MgO

C. SO2 gas

D. Mercaptans