Q. _________ is a special constituent of chlorophyll without which photosynthesis is not possible.

  • (A) Calcium
  • (B) Nitrogen
  • (C) Phosphorous
  • (D) Hydrogen
πŸ’¬ Discuss
βœ… Correct Answer: (B) Nitrogen

Q. ________ is a non volatile film forming constituent of a paint.

  • (A) Thinner
  • (B) Dryer
  • (C) Drying oil
  • (D) None of these
πŸ’¬ Discuss
βœ… Correct Answer: (C) Drying oil

Q. _________ iron is produced by the annealing of white cast iron.

  • (A) Malleable
  • (B) Nodular
  • (C) Ductile
  • (D) Grey
πŸ’¬ Discuss
βœ… Correct Answer: (A) Malleable

Q. _________ has the highest melting point out of the following.

  • (A) Tungsten
  • (B) Zirconium
  • (C) Molybdenum
  • (D) Tantalum
πŸ’¬ Discuss
βœ… Correct Answer: (A) Tungsten

Q. ________ has a negative co-efficient of linear expansion.

  • (A) Iron
  • (B) Copper
  • (C) Rubber
  • (D) Nickel
πŸ’¬ Discuss
βœ… Correct Answer: (B) Copper

Q. _____ glass is used in the mercury in glass thermometer meant for measuring a temperature of 500Β°C.

  • (A) Borosilicate
  • (B) High silica
  • (C) Supermax
  • (D) Lead
πŸ’¬ Discuss
βœ… Correct Answer: (C) Supermax

Q. ________ furnace is generally used in the non-ferrous foundries.

  • (A) Direct arc
  • (B) Indirect arc
  • (C) Resistance
  • (D) Induction
πŸ’¬ Discuss
βœ… Correct Answer: (B) Indirect arc

Q. _________ flux is used for the extraction of metal from its self fluxing ores.

  • (A) No
  • (B) Acid
  • (C) Basic
  • (D) Neutral
πŸ’¬ Discuss
βœ… Correct Answer: (A) No

Q. ________ fluid force is not considered in the Navier-Stokes equation.

  • (A) Turbulent
  • (B) Viscous
  • (C) Gravity
  • (D) Pressure
πŸ’¬ Discuss
βœ… Correct Answer: (A) Turbulent

Q. ________ circuit is most commonly used to measure strain with the help of a strain gauge.

  • (A) Ballast
  • (B) Voltage balancing potentiometric
  • (C) Simple current sensitive
  • (D) None of these
πŸ’¬ Discuss
βœ… Correct Answer: (B) Voltage balancing potentiometric

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