591. Production of one ton of cement requires about __________ tons of limestone.
0.6
1.2
2.2
3.8
✅ The correct answer is option B.
Chemical Process MCQs
592. Which of the following is not produced commercially from sea water?
Magnesium & potassium compounds
Common salt
Bromine
Iodine
✅ The correct answer is option D.
593. Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because
Its calorific value is very less
Tar neutralises the residual acids present in pitch
It reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop
All of the above
✅ The correct answer is option C.
594. The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by
Electrolysis
Electrolytic reduction
Electrolytic oxidation
None of these
✅ The correct answer is option B.
595. Percentage of uranium in carnotite ore found in Jadugoda (Jharkhand) is about
0.1 to 0.5
1 to 5
5 to 10
15 to 25
✅ The correct answer is option A.
597. Which of the following contains least amount of N₂?
Coke oven gas
Blast furnace gas
Producer gas
Water gas (blue gas)
✅ The correct answer is option A.
598. __________ acid is an unsaturated fatty acid.
Palmitic
Oleic
Stearic
Oxalic
✅ The correct answer is option B.
599. Catalytic oxidation of toluene produces
Styrene
Phenol
Benzene
Tri-nitro-toluene
✅ The correct answer is option B.
600. In the manufacture of H₂SO₄, vanadium catalyst as compared to platinum catalyst
Gives higher conversion efficiency
Has a longer life and is not poisoned by arsenic
Handles lower SO₂ content gas (7 -10% SO₂), thus increasing the capital cost of the plant
All of the above
✅ The correct answer is option D.