Chemical Process for Water Treatment MCQ Test Questions - Set 30 - ObjectiveBooks

Chemical Process for Water Treatment MCQ Test Questions - Set 30

Practice Test: Question Set - 30


1. Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction.
    (A) Endothermic
    (B) Exothermic
    (C) Irreversible
    (D) Both (b) and (c)

2. Catalyst used in the manufacture of sulphuric acid by chamber & contact processes are respectively
    (A) V2O5 & Cr2O3.
    (B) Oxides of nitrogen & Cr2O3
    (C) V2O5 on a porous carrier & oxides of nitrogen
    (D) Oxides of nitrogen & V2O5 on a porous carrier

3. In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2  2SO3), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to SO3 can be increased by
    (A) Increasing the oxygen concentration
    (B) Putting more quantity of V2O5 catalyst in the converter
    (C) Removing some quantity of SO3 during intermediate stage
    (D) Maintaining low temperature & pressure in the converter

4. Pick out the wrong statement.
    (A) Pasteurization of milk involves moderate heating followed by cooling
    (B) Bakeries and breweries make use of yeasts
    (C) Enzyme is a complex nitrogenous compound
    (D) Oils and fats are alkaloids

5. Fumigant insecticides
    (A) Kill insects, when they eat it
    (B) Emit poisonous vapor
    (C) Are absorbed throughout the plant
    (D) None of these

6. Calgon used in water treatment is chemically
    (A) Sodium phosphate
    (B) Sodium hexametaphosphate
    (C) Calcium phosphate
    (D) Tricresyl phosphate

7. Nitrogen is an essential component of
    (A) Mineral salts
    (B) Carbohydrates
    (C) Fats
    (D) Proteins

8. Caprolactam (a raw material for nylon-6 manufacture) is produced from
    (A) Phenol
    (B) Naphthalene
    (C) Benzene
    (D) Pyridine

9. High temperature carbonization of coal produces
    (A) Inferior coke compared to low temperature carbonization
    (B) Less of gases compared to liquid products
    (C) Larger quantity of tar compared to low temperature carbonization
    (D) None of these

10. The type of high refractive index glass used in optical instruments is __________ glass.
    (A) Pyrex
    (B) Flint
    (C) Crookes
    (D) None of these

11. Which of the following is used as a coagulant in water treatment?
    (A) Chloramine
    (B) Chlorine
    (C) Ferrous sulphate
    (D) Hydrogen peroxide

12. Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine?
    (A) Na2CO3
    (B) NaHCO3
    (C) H2
    (D) None of these

13. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil.
    (A) Drying
    (B) Semi-drying
    (C) Non-drying
    (D) None of these

14. Fermentation of molasses to produce ethyl alcohol is done at __________ °C.
    (A) 20 - 30
    (B) < - 5
    (C) 100 - 150
    (D) 250 - 300

15. Nylon-66 is manufactured from
    (A) Hexamethylene diamine and adipic acid
    (B) Hexamethylene diamine and Maleic anhydride
    (C) Caprolactam
    (D) Dimethyl terephthalate and ethylene glycol

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