31. Sea weeds are an important source of
Fluorine
Chlorine
Bromine
Iodine
✅ The correct answer is option D.
Chemical Process MCQs
32. Hydrogenation of oil takes place in a/an __________ reactor.
Autothermal
Trickle bed
Plug flow
None of these
✅ The correct answer is option B.
33. Calcination of gypsum produces
Plaster of paris
Salt cake
Nitre cake
Lime
✅ The correct answer is option A.
34. Glauber’s salt is chemically represented by
Na₂SO₄.10H₂O
CaCl(OCl)
CaSO₄.H₂O
(NH₄)₂SO₄
✅ The correct answer is option A.
35. The major constituents of glass are
Lime, clay and soda ash
Sand, lime and soda ash
Silica, alumina and clay
Silica, alumina and soda ash
✅ The correct answer is option B.
36. Baking soda is chemically represented by
Na₂CO₃
NaHCO₃
Na₂CO₃.H₂O
Na₂CO₃.10H₂O
✅ The correct answer is option B.
37. Nitrogen is an essential component of
Mineral salts
Carbohydrates
Fats
Proteins
✅ The correct answer is option D.
38. Ore concentration by froth floatation utilises the __________ of ore particles.
Density difference
Wetting characteristics
Terminal velocities
None of these
✅ The correct answer is option B.
39. Phosphoric acid is prepared from
Cryolite
Chalcopyrite
Rock phosphate
None of these
✅ The correct answer is option C.
40. Favourable conditions for the liquefaction of gases in general are
High pressure & low temperature
Low pressure & high temperature
High pressure & high temperature
Low pressure & low temperature
✅ The correct answer is option A.