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4

Enamels

A. Give good glossy finish

B. Are same as varnish

C. Are prepared from non-drying oil

D. Do not contain pigment

Correct Answer :

A. Give good glossy finish


Related Questions

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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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4

Ca(OH)2 is called

A. Quicklime

B. Slaked lime

C. Limestone

D. Gypsum

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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

Iron ore hematite is concentrated using

A. Electromagnetic separation mainly

B. Gravity separation

C. Froth floatation

D. Roasting

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4

The product obtained on mixing calcium oxide with water is called

A. Quicklime

B. Slaked lime

C. Milk of lime

D. None of these

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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

H2S is scrubbed from refinery gases by absorption using

A. Dilute H2SO4

B. Ethanol amine

C. Chilled water

D. Tri-butyl phosphate

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4

Which of the following is an unsaturated fatty acid?

A. Lauric acid

B. Palmitic acid

C. Stearic acid

D. Oleic acid

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4

Dacron is a

A. Condensation product of Hexamethylene diamine and adipic acid

B. Thermosetting material

C. Condensation product of dimethyl terephthalate and ethylene glycol

D. None of these

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4

Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the

A. Fertiliser manufacture

B. Car battery solution

C. Synthesis of oleum

D. Water treatment

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4

Silicone is a/an

A. Thermoplastic

B. Inorganic polymer

C. Monomer

D. None of these

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4

Cement mainly contains

A. CaO, SiO2, Al2O3

B. MgO, SiO2, K2O

C. Al2O3, MgO, Fe2O3

D. CaO, MgO, K2O

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4

Carboxymethyl cellulose (CMC) is added in detergents to

A. Prevent redeposition of soil on cleaned surface

B. Act as optical brightening agent

C. Inhibit corrosion in washing machines made of aluminium

D. None of these

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4

Gelatine which is a nitrogenous organic protein is obtained by the hydrolysis of

A. Collagen

B. Tannin

C. Molasses

D. Carbohydrate

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4

Highly porous refractory bricks are

A. Less susceptible to chemical attack by molten fluxes and gases etc

B. Very strong

C. Having very high thermal conductivity

D. None of these

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4

Which of the following is a disaccharide?

A. Sucrose

B. Glucose

C. Starch

D. Maltose

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4

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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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

__________ is a polysaccharide.

A. Maltose

B. Starch

C. Sucrose

D. Glucose

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Reaction of an alcohol with organic acid is called the __________ reaction.

A. Saponification

B. Esterification

C. Neutralisation

D. Acidification

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Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction

A. Decreases with decrease of thickness of the flakes

B. Increases with the increasing flake size keeping the flake thickness constant

C. Increases considerably with the rise of temperature

D. Decreases as the moisture content of flakes increases

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4

The basic difference between vegetable oils and fats is in their

A. Density

B. Chemical properties

C. Physical state

D. Composition

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4

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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4

Oleum produces fumes of

A. SO2

B. H2SO4

C. SO3

D. SO2 + H2SO4

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4

Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces

A. Nylon-6

B. Dacron

C. Polyester

D. PVC

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4

BHC (Benzene hexachloride) is made by the chlorination of benzene

A. Which is an addition reaction

B. Which is a substitution reaction

C. In absolute dark

D. In presence of sunlight

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4

The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at

A. SASOL (in South Africa)

B. Redcar (U.K.)

C. Los Angeles (U.S.A.)

D. Trombay (India)

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4

The drug used in contraceptives is

A. Sulfadiazine

B. Mestranol

C. Methyl salicylate

D. Penicillin

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4

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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4

The combustion reaction, C + O2 = CO2, is

A. Exothermic

B. Endothermic

C. Autocatalytic

D. None of these