SO₃
H₂SO₄
H₂SO₃
SO₂
✅ The correct answer is option B.
Chemical Engineering MCQs
Which of the following is the main constituent of the mother liquor produced in salt industry?
Quick lime
Glauber’s salt
Salt petre
Bromine
✅ The correct answer is option D.
Coagulant is used __________ filtration.
Before
After
During
To avoid
✅ The correct answer is option A.
Main constituent of limestone is
CaCO₃
MgCO₃
Na₂CO₃
CaSO₄
✅ The correct answer is option A.
Na₂CO₃.10H₂O is called
Washing soda
Soda ash
Slaked lime
Quicklime
✅ The correct answer is option A.
Pig iron is produced by blast furnaces in India using mostly the iron ore named
Hematite
Magnetite
Siderite
Chalcopyrite
✅ The correct answer is option A.
Sulphur addition in soap is done to
Improve the soap texture
Cure pimples & dandruff
Fasten lather formation
Increase its cleansing action
✅ The correct answer is option B.
Esterification reaction
Produces soap
Is reversible
Is a reaction between an alcohol and an organic acid
All of the above
✅ The correct answer is option D.
__________ are used as corrosion inhibitor for iron & steel in aqueous solutions.
Phosphates
Chromates
Sulphates
Bi-carbonates
✅ The correct answer is option B.
Sudden temperature fluctuation does not affect pyrex glass, because of its
Low co-efficient of expansion
High co-efficient of expansion
High melting point
Both B and C
✅ The correct answer is option A.