(NH₄)2SO₄
NH₄Cl
(NH₄)2 NO₃
Liquid NH₃
✅ The correct answer is option A.
Chemical Engineering MCQs
Main use of hydrazine is
As a rocket fuel
In water treatment
As a disinfectant
As fire retardant
✅ The correct answer is option A.
Catalytic oxidation of naphthalene produces
Styrene
Phenol
Phthalic anhydride
None of these
✅ The correct answer is option C.
99.5% purity oxygen is used in
Cutting and welding by oxy-acetylene flame
Hospitals for medicinal purposes
Gas masks and artificial breathing apparatus
All of the above
✅ The correct answer is option D.
__________ iron is the purest form of iron.
Cast
Wrought
Pig
High silicon
✅ The correct answer is option B.
Washing soda is chemically represented by
Na₂CO₃
Na₂CO₃.H₂O
Na₂CO₃.10H₂O
NaHCO₃
✅ The correct answer is option C.
Multistage catalytic converter is not used in the
Conversion of SO₂ to SO₃
NH₃ synthesis reaction
Both A & B
Neither A nor B
✅ The correct answer is option B.
Flexible foam (for mattresses) is usually made of
PVC
Silicone
Polyurethanes
Polyamides
✅ The correct answer is option C.
Systemic insecticides
Are absorbed throughout the plant
Kill insects following external bodily contact
Are stomach poisons
Emit poisonous vapour
✅ The correct answer is option A.
Blue vitriol is chemically
Copper sulphate
Ferrous sulphate
Copper nitrate
Aluminium sulphate
✅ The correct answer is option A.