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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
Question:- What is paraffin wax?
Answer:- Paraffin wax is obtained from petroleum by dewaxing light lubricating oil stocks. It is used in candles, wax paper, polishes, cosmetics, and electrical insulators. It assists in extracting perfumes from flowers, forms a base for medical ointments, and supplies a waterproof coating for wood. In wood and paper matches, it helps to ignite the matchstick by supplying an easily vaporized hydrocarbon fuel.
Question:- What is paraffin wax used for?
Answer:- Paraffin wax is a type of wax used for candles that can also be used to relieve pain from arthritis, sore joints or sore muscles. When the wax is melted and becomes hot, submerging your hands in the wax can be a great method to sooth pain.