More Questions on This Topic :

Question 1. __________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.
  1.    Pyrex
  2.    Soda lime
  3.    Lead
  4.    High silica
Answer: Option A

Question 2. Rotary kiln is not involved in the production of
  1.    Cement
  2.    Lime from limestone
  3.    Slaked lime from quick lime
  4.    None of these
Answer: Option C

Question 3. Which is the main reducing agent during production of iron from iron ore in a blast furnace?
  1.    C
  2.    CO
  3.    CO₂
  4.    H₂
Answer: Option B

Question 4. A good quality coal should have
  1.    Low fusion point of ash
  2.    High ash content
  3.    High sulphur content
  4.    None of these
Answer: Option D

Question 5. Which of the following processes is absent in glass manufacturing process?
  1.    Sintering
  2.    Annealing
  3.    Shaping or forming
  4.    Melting
Answer: Option A

Question 6. Dichloro diphenyl __________ is the full form of DDT (an insecticide).
  1.    Tetrachloroethane
  2.    Trichloroethane
  3.    Tetrachloromethane
  4.    Trichloromethane
Answer: Option B