Chemical Process Generation Multiple Choice Questions - Set 31 - ObjectiveBooks

Chemical Process Generation Multiple Choice Questions - Set 31

Practice Test: Question Set - 31

1. Anion exchanger is regenerated usually with
    (A) NaOH
    (B) H2SO4
    (C) Hydrazine
    (D) Alum solution

2. Sodium chloride content in sea water is about __________ gms/liter.
    (A) 2
    (B) 10
    (C) 25
    (D) 50

3. Which of the following has sodium bicarbonate as its main constituent?
    (A) Baking soda
    (B) Baking powder
    (C) Washing soda
    (D) None of these

4. Low purity oxygen is used for
    (A) L.D. steel making
    (B) Cutting and welding of metals
    (C) Medicinal purposes
    (D) Chemical oxidation processes

5. Lindane is
    (A) Not a fumigant
    (B) BHC (Benzene Hexachloride) containing 99% γ-isomer
    (C) A by-product of BHC manufacture
    (D) Both (b) and (c)

6. Highly porous refractory bricks are
    (A) Less susceptible to chemical attack by molten fluxes and gases etc.
    (B) Very strong
    (C) Having very high thermal conductivity
    (D) None of these

7. Carboxymethyl cellulose (CMC) is added in detergents to act as a/an
    (A) Surfactant
    (B) Builder
    (C) Optical brightening agent
    (D) Anti soil redeposition agent

8. The temperature in the calcium carbide furnace is __________ °C.
    (A) 200-300
    (B) 700-850
    (C) 2000-2200
    (D) 4000-4500

9. Kopper-Totzek coal gasifier
    (A) Can give ammonia synthesis gas (H2 + N2)
    (B) Is a moving bed reactor
    (C) Cannot use coking coal
    (D) Operate at very high pressure

10. Polyvinyl chloride (PVC) is
    (A) A thermosetting material
    (B) A condensation polymerization product
    (C) Made by employing emulsion polymerization
    (D) None of these

11. Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.
    (A) 75
    (B) < 10v
    (C) > 30
    (D) 50

12. The basic difference between vegetable oils and fats is in their
    (A) Density
    (B) Chemical properties
    (C) Physical state
    (D) Composition

13. 'Synthesis gas' meant for the synthesis of organic compound is a variable mixture of
    (A) N2 & H2
    (B) CO2 & H2
    (C) CO & H2
    (D) C & H2

14. Drinking (potable) water treatment does not involve
    (A) Coagulation
    (B) Sedimentation
    (C) Softening
    (D) Disinfection

15. Starting raw material for the manufacture of Maleic anhydride is
    (A) n-butene
    (B) Benzene
    (C) Either (a) or (b)
    (D) Neither (a) nor (b)

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