Chemical Process 1000+ MCQ with answer for IIFT

1. The main product of high temperature carbonisation of coal is
A. Coke
B. Ammonia
C. Tar
D. Phenol
Answer : A

2. The most economical pulp for the production of newsprint would be the __________ pulp.
A. Ground-wood
B. Sulphate
C. Sulphite
D. Semi-chemical
Answer : A

3. The process involved in converting rubber into a thin sheet or coating it on fabric is called
A. Extrusion
B. Mastication
C. Calendaring
D. Vulcanisation
Answer : C

4. Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H₂O = Fe₃O₄ + 4H₂, is not practised, as it is
A. A slow reaction
B. A discontinuous reaction (requiring regeneration of iron by water gas intermittently)
C. Still in development stage (by employing fluidised bed technique)
D. All (A), (B) and (C)
Answer : D

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

6. Saponification number of an oil or fat
A. Gives an idea about its molecular weight
B. Is inversely proportional to its molecular weight
C. Detects its adulteration
D. All (A), (B) & (C)
Answer : D

7. Bromine content in sea water may be around __________ ppm.
A. 70
B. 640
C. 1875
D. 2500
Answer : A

8. Thermosetting plastic materials
A. Can be repeatedly melted
B. Is useful for melt casting
C. Cannot be melted after forming
D. Is useful for spinning
Answer : C

9. The major constituent of black liquor generated during paper manufacture is sodium
A. Sulphate
B. Carbonate
C. Hydroxide
D. Bi-carbonate
Answer : B

10. Cement mainly contains
A. CaO, SiO₂, Al₂O₃
B. MgO, SiO₂, K₂O
C. Al₂O₃, MgO, Fe₂O₃
D. CaO, MgO, K₂O
Answer : A

11. Vegetable oils and fats basically differ in their
A. Density ranges
B. Physical state
C. Chemical composition
D. Chemical properties
Answer : B

12. Solvent extracted oil
A. Has low free fatty acid content
B. Is odourless
C. Has more of unsaturates
D. None of these
Answer : D

13. Good quality of edible salt is obtained from brine by the process of
A. Solar evaporation
B. Vacuum evaporation
C. Freeze drying
D. Electrolysis
Answer : B

14. Main constituent of limestone is
A. CaCO₃
B. MgCO₃
C. Na₂CO₃
D. CaSO₄
Answer : A

15. Starting material for the production of styrene butadiene rubber (SBR) is
A. Ethyl alcohol
B. Ethylene
C. Both (A) & (B)
D. Neither (A) nor (B)
Answer : C

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

17. The terminology 'BTX' used in coal tar distillation industry refers to
A. Benzol-toluol-xylol
B. Benzol-toluene-xylene
C. Benzene-toluol-xylol
D. Benzene-toluene-xylene
Answer : D

18. Refractory bricks having high thermal conductivity is desirable, when it is to be used in the
A. L.D. converter
B. Blast furnace
C. Rotary kiln
D. Recuperator
Answer : D

19. The drug used in contraceptives is
A. Sulfadiazine
B. Mestranol
C. Methyl salicylate
D. Penicillin
Answer : B

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

21. __________ is used as a flux in the smelting of copper ore like chalcopyrite.
A. Coke breeze
B. Lime powder
C. Silica/quartz
D. Dolomite
Answer : C

22. Commonly used glass is known as the __________ glass.
A. Flint
B. Hard
C. Pyrex
D. Soda
Answer : D

23. In an integrated steel plant, NH3 present in coke oven gas is normally recovered as
A. (NH₄)₂SO₄
B. NH₄Cl
C. (NH₄)₂ NO₃
D. Liquid NH₃
Answer : A

24. Finely ground calcium aluminate & silicate is a/an
A. Cermet
B. Cement
C. Abrasive
D. Explosive
Answer : B

25. Sodium carbonate (soda ash) is not used in the manufacture of
A. Fire extinguishers
B. Sugar
C. Baking powder
D. Detergents
Answer : D

26. Pig iron is produced by blast furnaces in India using mostly the iron ore named
A. Hematite
B. Magnetite
C. Siderite
D. Chalcopyrite
Answer : A

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

28. Blue vitriol is chemically
A. Copper sulphate
B. Ferrous sulphate
C. Copper nitrate
D. Aluminium sulphate
Answer : A

29. Essential oils are usually obtained using
A. Steam distillation
B. Extractive distillation
C. Solvent extraction
D. Leaching
Answer : D

30. Industrial production of chloroform requires acetone and
A. Phosgene
B. Calcium hypochlorite
C. Chlorine
D. Ammonium chloride
Answer : B

31. P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as
A. Bakelite
B. Neoprene
C. Teflon
D. Nylon-66
Answer : C

32. Gun powder uses
A. Sulphur
B. Charcoal
C. Potassium nitrate
D. All (A), (B), & (C)
Answer : D

33. Phenol formaldehyde resin is used as an adhesive in making
A. Laminates
B. Card boxes
C. Furniture
D. Books
Answer : A

34. Coal tar is used as a
A. Binding material for coal briquettes
B. Fuel in rotary kiln
C. Binder in making carbon electrodes
D. All (A), (B) and (C)
Answer : D

35. Ethyl alcohol cannot be produced
A. From waste sulphite substrate of paper mills
B. By Esterification and hydrolysis of ethylene
C. From molasses
D. None of these
Answer : D

36. __________ is produced using Polycondensation reaction.
A. Polythene
B. Phenol formaldehyde
C. Poly vinyl chloride
D. None of these
Answer : B

37. Which of the following is a detergent?
A. Benzene hexachloride
B. Alkyl benzene sulphonate
C. Polytetrafluoroethylene
D. Cellulose nitrate
Answer : B

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

39. In Kraft process of paper manufacture, white cooking liquor consists of caustic soda
A. Sodium sulphide & sodium carbonate
B. Sodium sulphite & sodium carbonate
C. Sodium sulphite & sodium sulphide
D. None of these
Answer : A

40. The manufacture of Kraft pulp is done by a/an __________ process.
A. Alkaline
B. Acidic
C. Neutral
D. None of these
Answer : A

41. Very fine suspended and colloidal impurities are removed from water by a process called
A. Sedimentation
B. Coagulation
C. Disinfection
D. Softening
Answer : B

42. Enzymes are
A. Proteins with high molecular weight (around 10,000)
B. Derived from living organisms
C. Catalyst for temperature sensitive reactions
D. All (A), (B) and (C)
Answer : D

43. Salt cake is chemically represented by
A. Na₂SO₄
B. CaSO₄. ½H₂O
C. MgSO₄
D. BaSO₄
Answer : A

44. 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

45. Raw materials for 'Solvay Process' for manufacture of the soda ash are
A. Salt, limestone and coke or gas
B. Ammonia, salt and limestone
C. Ammonia limestone and coke
D. None of these
Answer : A

46. A unit operation is exemplified by the process of
A. Reduction
B. Desorption
C. Nitration
D. Combustion
Answer : B

47. Dacron is a
A. Condensation product of Hexamethylene diamine and adipic acid
B. Thermosetting material
C. Condensation product of dimethyl terephthalate and ethylene glycol
D. None of these
Answer : D

48. Which of the following is not produced on commercial scale from sea water?
A. Bromine
B. Magnesium compounds
C. Potassium compounds
D. Sodium sulphate
Answer : D

49. Nicotine is
A. A volatile alkaloid
B. Obtained by treating by-products of the tobacco processing industry
C. Both (A) and (B)
D. Neither (A) nor (B)
Answer : C

50. Shaving soaps are
A. Soft potassium soaps (potassium salt of fatty acid) with free Stearic acid to give lather a lasting property
B. Metallic soaps compounded with frothing agents
C. High free alkali soaps having excess of cane sugar and alcohol
D. None of these
Answer : A