A. Aluminium sulphate
B. Ferrous sulphate
C. Hydrated lime
D. Chloramine
Related Mcqs:
- The most commonly used chemical coagulant in water treatment is________________?
A. Ferrous sulphate
B. Alum
C. Lime
D. Hydrazine - The amount of chemical coagulant added for treatment of polluted water ______________ with increase in temperature of the polluted water to be treated?
A. Decreases
B. Increases
C. Remain constant
D. May increase or decrease; depends on the chemical characteristics of polluted water - Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The ratio of chemical potential to free energy of a pure substance at constant temperature and pressure is________________?
A. 0
B. 1
C. ∞
D. None of these - At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by (where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.) ?
A. μ° + RT ln f
B. μ°+ R ln f
C. μ° + T ln f
D. μ° + R/T ln f - Which is the most widely used coagulant for the treatment of turbid water ?
A. Alum (aluminium sulphate)
B. Lime
C. Ferric chloride
D. Sodium aluminate - Chemical engineering thermodynamics is concerned with the ____________ in/of chemical processes?
A. Reaction mechanism
B. Calculation of rates
C. Energy transformation from one form to another
D. None of these - The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about ____________ decibels?
A. 60
B. 90
C. 105
D. 120 - Hazardous/polluting chemical industries should have an ‘exclusion zone’ with a green belt and general public access prohibited around it, covering a radius of _____________ metres?
A. 100
B. 1000
C. 400
D. 4000 - Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about ______________ decibels?
A. 20
B. 60
C. 90
D. 120 - If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will___________________?
A. Increase
B. Decrease
C. Remain unaltered
D. Increase or decrease; depends on the particular reaction
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