Chemical Grafting Process Chemical Engineering Questions - Set 33 - ObjectiveBooks
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Chemical Grafting Process Chemical Engineering Questions - Set 33

Practice Test: Question Set - 33


1. Transparent soaps (e.g. Pears) are
    (A) Usually soft soap (made from coconut oil) in which cane sugar & alcohol are added and finally washed with methylated spirit to achieve transparency
    (B) Metallic soaps with frothing agent and free Stearic acid to achieve transparency
    (C) Metallic soaps with frothing agent from which glycerine has not been recovered
    (D) None of these

2. Wax is a
    (A) Mixture of glycerides
    (B) Mixture of esters of polyhydric alcohols excepting glycerine
    (C) Liquid at room temperature
    (D) Mixture of glycerides of fatty acids

3. The biochemical treatment applied to sewage effluents is a process of
    (A) Dehydration
    (B) Reduction
    (C) Oxidation
    (D) Polymerization

4. Ordinary glass is not a/an
    (A) Amorphous isotropic material
    (B) Supercooled liquid
    (C) Material with sharp definite melting point
    (D) Electrical insulator

5. Hydrochloric acid is also known as
    (A) Oil of vitriol
    (B) Muriatic acid
    (C) Strong organic acid
    (D) Green acid

6. At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.
    (A) Independent of
    (B) Directly proportional to
    (C) Inversely proportional to
    (D) Proportional to the square of

7. Higher viscosity index of a lubricating oil denotes
    (A) Less changes in fluidity of oil with temperature
    (B) Substantially high change in fluidity of oil with temperature
    (C) Its unsuitability under varying temperature conditions
    (D) None of these

8. Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.
    (A) -5 to 0
    (B) 5 to 10
    (C) 30 to 50
    (D) 75 to 80

9. Chloral is used in the manufacture of
    (A) DDT
    (B) BHC
    (C) Parathion
    (D) None of these

10. __________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace.
    (A) Bauxite
    (B) Limestone
    (C) Quartz
    (D) Manganese

11. Reverse osmosis is normally used for the
    (A) Separation of isotopes of uranium from gaseous uranium hexafluoride
    (B) Separation of helium from natural gas
    (C) Desalination of brackish water to produce potable (drinking) water
    (D) Purification of oxygen

12. Dry ice (solidified CO2) is used for the
    (A) Storage & shipment of frozen foods and ice-creams
    (B) Liquefaction of permanent gases
    (C) Liquefaction of natural gas
    (D) None of these

13. Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance.
    (A) Flint
    (B) Soda
    (C) Pyrex
    (D) Potash

14. The catalyst used in shift converter is
    (A) Nickel
    (B) Vanadium
    (C) Silica gel
    (D) Alumina

15. CaO is called
    (A) Quick lime
    (B) Slaked lime
    (C) Limestone
    (D) Calcite

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