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

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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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Graphite is a/an

A. Electrical insulator

B. Allotrope of carbon

C. Moderator used in nuclear reactor

D. Both (B) and (C)

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Electric bulbs are made of __________ glass.

A. Jena

B. Flint

C. Crookes

D. Pyrex

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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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Synthetic glycerine is produced from

A. Toluene

B. Phenol

C. Propylene

D. Naphthalene

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Sulphuric acid saturated with SO₃ is called

A. Concentrated H₂SO₄

B. Sulphurous acid

C. Oleum

D. None of these

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CaO is called

A. Quick lime

B. Slaked lime

C. Limestone

D. Calcite

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Aryl benzene sulphonate (ABS) is a

A. Detergent

B. Plasticiser for unsaturated polyester

C. Starting material for the synthesis of glycerine

D. Coating ingredient for photographic film

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Plasticisers are added to synthetic plastics to

A. Impart flexibility

B. Improve workability during fabrication

C. Develop new improved properties not present in the original resins

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

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Sulphuric acid is mainly used in the __________ industry.

A. Fertiliser

B. Steel

C. Paper

D. Paint

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Pick out the wrong statement.

A. Pasteurisation of milk involves moderate heating followed by cooling

B. Bakeries and breweries make use of yeasts

C. Enzyme is a complex nitrogenous compound

D. Oils and fats are alkaloids

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The drug used in contraceptives is

A. Sulfadiazine

B. Mestranol

C. Methyl salicylate

D. Penicillin

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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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Fusion of limestone and __________ produces high alumina cement.

A. Sand

B. Bauxite

C. Quicklime

D. Calcite

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Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

A. CaO

B. MnO₂

C. ZnO

D. FeS

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Pick out the wrong statement.

A. Conversion of SO₂ to SO₃ in Monsanto-4 pass converter is about 98%

B. The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide

C. Vitriol oil is nothing but technical sulphuric acid

D. Decomposition of sulphuric acid on heating does not start before its boiling

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Setting of plaster of Paris is accompanied with

A. Hydration

B. Dehydration

C. Hydrolysis

D. Loss of CO₂

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One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

A. Adjust the pH of the syrup

B. Remove the coloring matter from the syrup

C. Reduce the viscosity of the syrup

D. Improve the rate of crystallisation of sugar

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Mercury cells for caustic soda manufacture, compared to diaphragm cells

A. Require lower initial investment

B. Require more power

C. Produce lower concentration NaOH

D. None of these

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Styrene (a monomer for the production of polystyrene) is commercially produced by

A. Catalytic dehydrogenation of ethyl benzene

B. Dehydration of ethyl alcohol followed by hydrogenation

C. Reacting ethylene oxide with acetaldehyde

D. Fermentation of starch

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

A. 300

B. 1100

C. 700

D. 900

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__________ is an ore of lead.

A. Quartz

B. Galena

C. Siderite

D. Chalcopyrite

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Hydrophilic group of a soap or detergent solution is

A. Water hating

B. Soil loving

C. Water loving

D. None of these

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Pure rectified spirit contains about __________ percent alcohol.

A. 45

B. 70

C. 95

D. 99.5

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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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Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces

A. Nylon-6

B. Dacron

C. Polyester

D. PVC

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Manufacture of phthalic anhydride uses __________ as a catalyst.

A. Ni

B. Cr

C. V₂O₅

D. Al₂O₃

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Phenol is mainly used

A. To produce benzene

B. To produce phenol formaldehyde

C. To produce polyester resin

D. As a plasticiser for unsaturated polyester

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The noble gas which occurs most abundantly in the atmosphere is

A. Helium

B. Neon

C. Krypton

D. Argon

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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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Chemical name of soda ash is

A. Sodium bicarbonate

B. Sodium thiosulphate

C. Potassium carbonate

D. None of these

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Accepted Answer

B. Refractoriness

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

Correct Answer :

Show all Chemical Process MCQ

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Pick out the wrong statement.

Setting of plaster of Paris is accompanied with

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Mercury cells for caustic soda manufacture, compared to diaphragm cells

Styrene (a monomer for the production of polystyrene) is commercially produced by

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

__________ is an ore of lead.

Hydrophilic group of a soap or detergent solution is

Pure rectified spirit contains about __________ percent alcohol.

Oils and fats are converted to soap in a process called

Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces

Manufacture of phthalic anhydride uses __________ as a catalyst.

Phenol is mainly used

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Hydrogenation of oil/fat does not

Chemical name of soda ash is

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

Correct Answer :

Show all Chemical Process MCQ

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Graphite is a/an

Electric bulbs are made of __________ glass.

Presence of carbonaceous matter in the sewage

Synthetic glycerine is produced from

Sulphuric acid saturated with SO3 is called

CaO is called

Aryl benzene sulphonate (ABS) is a

Plasticisers are added to synthetic plastics to

Sulphuric acid is mainly used in the __________ industry.

Pick out the wrong statement.

The drug used in contraceptives is

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

Fusion of limestone and __________ produces high alumina cement.

Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.

Pick out the wrong statement.

Setting of plaster of Paris is accompanied with

One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to

Mercury cells for caustic soda manufacture, compared to diaphragm cells

Styrene (a monomer for the production of polystyrene) is commercially produced by

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

__________ is an ore of lead.

Hydrophilic group of a soap or detergent solution is

Pure rectified spirit contains about __________ percent alcohol.

Oils and fats are converted to soap in a process called

Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces

Manufacture of phthalic anhydride uses __________ as a catalyst.

Phenol is mainly used

The noble gas which occurs most abundantly in the atmosphere is

Hydrogenation of oil/fat does not

Chemical name of soda ash is

Also checkout

Sulphuric acid saturated with SO₃ is called