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Question:- Rayon is chemically A. cellulose B. pectin C. glucose D. amylase
Answer:- Option A
Question:- Optic fibres are mainly used for which of the following? A. Musical instruments B. Food industry C. Weaving D. Communication
Answer:- Option D
Question:- The major ingredient of leather is A. collagen B. carbohydrate C. polymer D. nucleic acid
Answer:- Option A
Question:- What are the soaps? A. Salts of silicates B. Mixture of glycerol and alcohols C. Sodium or potassium salts of heavier fatty acids D. Esters of heavy fatty acids
Answer:- Option C
Question:- 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
Answer:- Option B
Question:- In vulcanisation, natural rubber is heated with A. Carbon B. Silicon C. Sulphur D. Phosphorous
Answer:- Option C
Question:- Deep blue colour is imparted to glass by the presence of A. cupric oxide B. nickel oxide C. cobalt oxide D. iron oxide
Answer:- Option C
Question:- Glass is made of the mixture of A. quartz and mica B. sand and silicates C. salt and quartz D. sand and salt
Answer:- Option B
Question:- The vast resources of unutilised natural gas can be used in the production of A. graphite B. Synthetic petroleum C. fertilisers D. carbide
Answer:- Option C
Question:- 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
Answer:- Option C
Question:- 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
Answer:- Option B
Question:- Soap is a mixture of sodium or potassium salts of A. dicarboxylic acids B. monocarboxylic acids C. glycerol D. tricarboxylic acids
Answer:- Option B
Question:- The type of glass used in making lenses and prisms is A. jena glass B. soft glass C. pyrex glass D. flint glass
Answer:- Option D
Question:- Which one of the following is the petroleum wax? A. Paraffin wax B. Jonoba wax C. Carnauba wax D. Bees wax
Answer:- Option A