Bleaching powder
Slaked lime
Alum
Copper sulphate
✅ The correct answer is option C.
Chemical Process MCQs
A ‘unit process’ is exemplified by the
Distillation
Hydrogenation of oils
Absorption
Humidification
✅ The correct answer is option B.
Chemical formula of ‘salt cake’ is
Na₂SO₄
CaSO₄
MgSO₄
BaSO₄
✅ The correct answer is option A.
In premitive days, __________ was being manufactured by Leblanc Process.
Alum
Washing soda
Soda ash
Calcium carbide
✅ The correct answer is option C.
Which is a high grade pulp?
Rag pulp
Mechanical pulp
Sulphate pulp
Sulphite pulp
✅ The correct answer is option C.
How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?
500°C
750°C
1000°C
1500°C
✅ The correct answer is option C.
Magnesium and calcium __________ cause temporary hardness of water.
Carbonates
Bicarbonates
Phosphates
Sulphates
✅ The correct answer is option B.
Solvay process as compared to dual process (i.e. modified Solvay process)
Can use low grade brine
Has less corrosion problems
Involves higher investment in NH₃ recovery units than that for crystallisation units for NH₄Cl
Both B and C
✅ The correct answer is option D.
Chloramines are used in water treatment for
Disinfection and control of taste & odour
Corrosion control
Removing turbidity
Control of bacteria
✅ The correct answer is option A.
Which of the following is not a food additive?
Citric acid
Invertage
Benzoyl peroxide
Ammonium chloride
✅ The correct answer is option D.