Chemical Process MCQ Solved Paper for ESIC

1. Ethanol amine is produced using ammonia and
A. Ethyl benzene
B. Ethylene oxide
C. Ethanol
D. Ethane
Answer : B

2. Comparing sulphate process with sulphite process, we find that __________ in the later.
A. Both temperature & pressure in the former is less than that
B. Both temperature & pressure in the former is more than that
C. Temperature is more in the former whereas pressure is more
D. Pressure is more in the former whereas temperature is less
Answer : B

3. Varnish does not contain
A. Pigment
B. Thinner
C. Dryer
D. Anti-skimming agent
Answer : A

4. Which form of sulphur is the most stable at room temperature?
A. Plastic
B. Monoclinic
C. Rhombic
D. Flowers of sulphur
Answer : C

5. Molecular weight of plastics ranges from
A. 5000 to 10000
B. 20000 to 250000
C. 500 to 5000
D. 106 to 109
Answer : B

6. 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
Answer : C

7. Sulphuric acid is mainly used in the __________ industry.
A. Fertiliser
B. Steel
C. Paper
D. Paint
Answer : A

8. Heating of __________ to 120°C, produces plaster of paris.
A. Blue vitriol
B. Gypsum
C. Calcium silicate
D. Calcium sulphate
Answer : B

9. Which of the following is used as a binding material in soap to improve soap texture?
A. Rosin
B. Borax
C. Benzyl acetate
D. Sodium carbonate
Answer : B

10. The noble gas which occurs most abundantly in the atmosphere is
A. Helium
B. Neon
C. Krypton
D. Argon
Answer : D

11. The purpose of adding Na₂CO₃ to water of low alkalinity is to
A. Permit the use of alum as a coagulant
B. Increase the softening capacity of zeolite
C. Facilitate easy regeneration of zeolite
D. All (A), (B) and (C)
Answer : A

12. Which of the following has sodium bicarbonate as its main constituent?
A. Baking soda
B. Baking powder
C. Washing soda
D. None of these
Answer : B

13. Reaction of calcium carbide with water produces a gas, which is used
A. As an illuminant
B. For metal cutting/welding
C. Both (A) & (B)
D. Neither (A) nor (B)
Answer : C

14. Percentage of glycerine present in the spent lye obtained during soap manufacture is about
A. 0.5
B. 5
C. 20
D. 35
Answer : B

15. Lithophane is
A. Explosive
B. White lead
C. Filter aid
D. ZnS (white pigment)
Answer : D

16. Sulphuric acid completely saturated with sulphur trioxide is called
A. Concentrated sulphuric acid
B. Oleum
C. Sulphurous acid
D. Dilute sulphuric acid
Answer : A

17. Chalcopyrite is the main ore of
A. Copper
B. Lead
C. Tin
D. Iron
Answer : A

18. Contact process of sulphuric acid manufacture
A. Yields acid of higher concentration than chamber process
B. Yields acids of lower concentration than chamber process
C. Is obsolete
D. Eliminates absorber
Answer : A

19. Sea water contains about __________ ppm of bromine.
A. 5
B. 70
C. 500
D. 1700
Answer : B

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

21. Basic oxide is absent in __________ glass.
A. Flint
B. Pyrex
C. Quartz
D. All (A), (B) & (C)
Answer : C

22. Fusion of limestone and __________ produces high alumina cement.
A. Sand
B. Bauxite
C. Quicklime
D. Calcite
Answer : B

23. Raw materials used for producing __________ cement does not contain iron oxide.
A. Waterproof
B. Slag
C. White
D. Pozzolan
Answer : C

24. Starting material for the commercial production of ethyl alcohol in India is
A. Rice
B. Molasses
C. Fruit of Mahua tree
D. Maize
Answer : B

25. Synthetic glycerine is produced from
A. Toluene
B. Phenol
C. Propylene
D. Naphthalene
Answer : C

26. Acrylonitrile is mainly used in the __________ industry.
A. Polymer
B. Printing
C. Dyeing
D. Photographic
Answer : C

27. Stereospecific agents are exemplified by
A. Radiation
B. Supported metal oxide catalysts
C. Ziegler catalysts
D. All (A), (B) & (C)
Answer : D

28. Superior quality laboratory apparatus is made of the __________ glass having low thermal coefficient of expansion & high chemical resistance.
A. Flint
B. Soda
C. Pyrex
D. Potash
Answer : C

29. Consider the production of ammonia from methene and air as raw materials. The catalysts used are:
(i) __________ for steam reforming of methane and
(ii) __________ for ammonia synthesis.
A. (i) - Ni/Al₂O₃; (ii) - Cu - ZnO/Al₂O₃
B. (i) - Fe/Al₂O₃; (ii) - Cu - ZnO/Al₂O₃
C. (i) - Ni/Al₂O₃; (ii) - Fe/Al₂O₃
D. (i) - Fe/Al₂O₃; (ii) - Ni/Al₂O₃
Answer : C

30. 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
Answer : A

31. Liquor poisoning generally occurs due to the presence of __________ in it.
A. Ethyl alcohol
B. Impurities
C. Methyl alcohol
D. Carbonic acid
Answer : C

32. __________ is a thermosetting plastic.
A. Polyvinyl chloride
B. Polythene
C. Bakelite
D. Teflon
Answer : C

33. The end bleaching agent used to move last traces of colour bodies from the pulp is
A. Chlorine dioxide (ClO₂)
B. MgO
C. SO₂ gas
D. Mercaptans
Answer : A

34. CaO is called
A. Quick lime
B. Slaked lime
C. Limestone
D. Calcite
Answer : A

35. Which of the following is not a pyrite ore?
A. Celestite
B. Galena
C. Gypsum
D. Siderite
Answer : D

36. 10% oleum comprises of 10% free
A. SO₂
B. H₂SO₃
C. SO₃
D. H₂SO₄
Answer : C

37. Esterification reaction
A. Produces soap
B. Is reversible
C. Is a reaction between an alcohol and an organic acid
D. All (A), (B) and (C)
Answer : D

38. Nitric acid is not used in the manufacture of
A. Detergents
B. Fertilisers
C. Aqua regia
D. Explosives
Answer : A

39. CO & H₂ are the constituents of
A. Producer gas
B. Water gas
C. Coke oven gas
D. All (A), (B) and (C)
Answer : D

40. __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.
A. Chlorine
B. Ammonium chloride
C. Sodium carbonate
D. Sodium bi-carbonate
Answer : A

41. Poly Tetrafluoroethylene (P.T.F.E.) is known as
A. Bakelite
B. Teflon
C. Celluloid
D. Dacron
Answer : B

42. Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and
A. Sulphuric acid
B. Phosphoric acid
C. Hydrochloric acid
D. Hydrofluoric acid
Answer : A

43. Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
A. 70
B. 55
C. 80
D. 94
Answer : D

44. Oil produced by solvent extraction
A. Has low free fatty acid content
B. Is odourless
C. Both (A) & (B)
D. Neither (A) nor (B)
Answer : D

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

46. Laboratory glass wares which reacts with hydrofluoric acid, are made of the __________ glass.
A. Lead
B. Borosilicate
C. Soda lime
D. Alkali silicate
Answer : B

47. Fusion of bauxite and __________ produces high alumina cement.
A. Alum
B. Limestone
C. Coke
D. Quartz
Answer : B

48. Hydrogenation of oil does not
A. Remove double bonds
B. Raise its melting point
C. Improve its resistance to oxidation
D. None of these
Answer : D

49. Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.
A. -53
B. -103
C. -183
D. -196
Answer : C

50. Cellulose percentage in bamboo fibre is about
A. 10
B. 20
C. 50
D. 85
Answer : C