Q. The major constituents of glass are

  • (A) silica, alumina and clay
  • (B) silica, alumina and soda ash
  • (C) lime, clay and soda ash
  • (D) sand, lime and soda ash
πŸ’¬ Discuss
βœ… Correct Answer: (D) sand, lime and soda ash

Q. Main constituents of Portland cement are calcium aluminate and

  • (A) carbonates
  • (B) sodium silicate
  • (C) silicates
  • (D) gypsum
πŸ’¬ Discuss
βœ… Correct Answer: (C) silicates

Q. Fats as compared to oils have

  • (A) lower melting point
  • (B) much higher reactivity to oxygen
  • (C) less unsaturated glycerides of fatty acids
  • (D) more unsaturated glycerides of fatty acids
πŸ’¬ Discuss
βœ… Correct Answer: (C) less unsaturated glycerides of fatty acids

Q. The main product of high temperature carbonization of coal is

  • (A) ammonia
  • (B) coke
  • (C) phenol
  • (D) tar
πŸ’¬ Discuss
βœ… Correct Answer: (B) coke

Q. Phosphoric acid is prepared from

  • (A) rock phosphate
  • (B) cryolite
  • (C) chalcopyrite
  • (D) none of these
πŸ’¬ Discuss
βœ… Correct Answer: (A) rock phosphate

Q. Electric bulbs are made of _____ glass.

  • (A) pyrex
  • (B) crookes
  • (C) flint
  • (D) jena
πŸ’¬ Discuss
βœ… Correct Answer: (C) flint

Q. Esterification reaction process

  • (A) mercaptans
  • (B) soap
  • (C) detergent
  • (D) vanaspati
πŸ’¬ Discuss
βœ… Correct Answer: (B) soap

Q. Chemical name of gridnard reagent is

  • (A) sodium bicarbonate
  • (B) sodium sulphite
  • (C) ethyl magnesium chloride
  • (D) sodium thiosulphate
πŸ’¬ Discuss
βœ… Correct Answer: (C) ethyl magnesium chloride

Q. Catalyst used in the hydrogenation of oil is

  • (A) alumina
  • (B) iron
  • (C) nickel
  • (D) platinum
πŸ’¬ Discuss
βœ… Correct Answer: (C) nickel

Q. Viscose rayon is chemically

  • (A) regenerated cellulose acetate
  • (B) cellulose acetate
  • (C) cellulose nitrate0
  • (D) regenerated cellulose nitrate
πŸ’¬ Discuss
βœ… Correct Answer: (B) cellulose acetate

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