Chemical Process Engineer Jobs Interview Questions - Set 28 - ObjectiveBooks

Chemical Process Engineer Jobs Interview Questions - Set 28

Practice Test: Question Set - 28

1. Wood charcoal is used for decolouration of sugar, because it __________ the coloured materials.
    (A) Adsorbs
    (B) Oxidizes
    (C) Reduces
    (D) Converts

2. More than 100 percent of __________ is present in oleum.
    (A) SO3
    (B) H2SO4
    (C) H2SO3
    (D) SO2

3. Thermal pyrolysis of ethylene dichloride produces
    (A) Trichloroethylene
    (B) Vinyl chloride
    (C) Ethanol amine
    (D) Ethylene oxide

4. Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
    (A) Nickel
    (B) Vanadium
    (C) Alumina
    (D) Iron

5. Argon is the third largest constituent of air (followed by N2 & O2). Its percentage by volume in air is
    (A) 0.14
    (B) 0.34
    (C) 0.94
    (D) 1.4

6. Ca(OH)2 is called
    (A) Quicklime
    (B) Slaked lime
    (C) Limestone
    (D) Gypsum

7. Diaphragm electrolytic cell as compared to mercury electrolytic cell
    (A) Produces 70% NaOH solution
    (B) Requires less specific power consumption for the production of chlorine
    (C) Requires lesser investment for similar capacity
    (D) All (a), (b) and (c)

8. Helium is produced on commercial scale from
    (A) Air
    (B) Natural gas
    (C) Coke oven gas
    (D) None of these

9. Concentration of sulphide ores is done usually by
    (A) Roasting
    (B) Smelting
    (C) Froth floatation
    (D) Electromagnetic separation

10. RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically
    (A) Cyclo trimethylene trinitramine
    (B) Trinitro resorcinol
    (C) Cyclo tetramethylene tetranitramine
    (D) Trinitrobenzene

11. Bleaching of paper pulp is done with
    (A) Activated clay
    (B) Bromine
    (C) Chlorine or chlorine dioxide
    (D) Magnesium sulphite

12. Pick out the wrong statement.
    (A) Conversion of SO2 to SO3 in Monsanto-4 pass converter is about 98%
    (B) The chemical formula of oleum is H2S2O7, which is formed by saturating sulphuric acid with sulphur trioxide
    (C) Vitriol oil is nothing but technical sulphuric acid
    (D) Decomposition of sulphuric acid on heating does not start before its boiling

13. Which of the following processes is absent in glass manufacturing process?
    (A) Sintering
    (B) Annealing
    (C) Shaping or forming
    (D) Melting

14. Catalytic oxidation of naphthalene produces
    (A) Styrene
    (B) Phenol
    (C) Phthalic anhydride
    (D) None of these

15. 90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.
    (A) < 0
    (B) 10-30
    (C) 250-280
    (D) 500-600

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