General Science - Measurements,Nuclear Science and Synthetic Materials

Which one of the following is the petroleum wax?

A. Paraffin wax

B. Jonoba wax

C. Carnauba wax

D. Bees wax

The type of glass used in making lenses and prisms is

A. jena glass

B. soft glass

C. pyrex glass

D. flint glass

Soap is a mixture of sodium or potassium salts of

A. dicarboxylic acids

B. monocarboxylic acids

C. glycerol

D. tricarboxylic acids

Paper is manufactured by

A. Wood and resin

B. Wood, sodium and bleaching powder

C. Wood, calcium, hydrogen sulphite and resin

D. Wood and bleaching powder

Gypsum is added to cement clinker to

A. increase the tensile strength of cement

B. decrease the rate of setting of cement

C. facilitate the formation of colloidal gel

D. bind the particles of calcium silicate

Deep blue colour is imparted to glass by the presence of

A. cupric oxide

B. nickel oxide

C. cobalt oxide

D. iron oxide

Glass is made of the mixture of

A. quartz and mica

B. sand and silicates

C. salt and quartz

D. sand and salt

The vast resources of unutilised natural gas can be used in the production of

A. graphite

B. Synthetic petroleum

C. fertilisers

D. carbide

In vulcanisation, natural rubber is heated with

A. Carbon

B. Silicon

C. Sulphur

D. Phosphorous

How does common salt help in separating soap from the solution after saponification?

A. By decreasing density of Soap

B. By decreasing solubility of Soap

C. By increasing density of Soap

D. By increasing solubility of Soap

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