Chemical Process 1000+ MCQ with answer for IBPS SO

1. The major constituents of glass are
A. Lime, clay and soda ash
B. Sand, lime and soda ash
C. Silica, alumina and clay
D. Silica, alumina and soda ash
Answer : B

2. Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?
A. High cost of mercury
B. High specific gravity of mercury
C. Non-availability of high purity mercury
D. Pollution of water stream by mercury
Answer : D

3. Penicillin is separated from fermented broth by
A. Extraction with amyl or butyl acetate
B. Ternary Azeotropic distillation
C. Evaporator in calandria
D. Extractive distillation
Answer : A

4. Zeolite is used in the
A. Water treatment
B. Glass manufacture
C. Hydrogenation of fatty oil as a catalyst
D. Development of exposed photographic plate
Answer : A

5. Pick out the wrong statement.
A. High early strength cement are made from materials having high silica to lime ratio
B. The function of gypsum in cement is to enhance its initial setting rate
C. Acid resistant cements are known as silicate cement
D. Major component of greyish Portland cement is tricalcium silicate
Answer : A

6. Naphthalene is removed from coke oven gas by
A. Adsorbing on palladium
B. Absorbing in ethanolamine
C. Scrubbing with wash oil
D. Passing it through electrostatic precipitator
Answer : C

7. Major component of flint glass is
A. Lead oxide
B. Silica
C. Alumina
D. Soda
Answer : A

8. Penicillin is made employing __________ fermentation process.
A. Continuous
B. Aerobic batch
C. Anaerobic batch
D. None of these
Answer : B

9. Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the
A. Fertiliser manufacture
B. Car battery solution
C. Synthesis of oleum
D. Water treatment
Answer : B

10. Permanent hardness of water can be removed by
A. Addition of soda ash to it
B. Treating it with zeolites
C. Passing it through sodium hexametaphosphate
D. All (A), (B), and (C)
Answer : D

11. Zeigler process
A. Produces high density polyethylene
B. Produces low density polyethylene
C. Uses no catalyst
D. Employs very high pressure
Answer : A

12. Fire clay is __________ refractory material.
A. A basic
B. An acidic
C. A neutral
D. Not a
Answer : B

13. Common salt is generally not produced commonly by __________ method from brine.
A. Freeze drying
B. Electrolytic
C. Solar evaporation
D. Vacuum evaporation
Answer : A

14. Reaction of ethylene glycol and dimethyl terephthalate (DMT) produces
A. Nylon-6
B. Dacron
C. Polyester
D. PVC
Answer : B

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

16. Commercial production of calcium carbide requires limestone and __________ as raw materials.
A. Coke
B. Sand
C. Soda ash
D. Fuel oil
Answer : B

17. SO2 is bubbled through hot sugar cane juice to
A. Act as an acidifying agent
B. Increase its concentration
C. Increase the amount of molasses
D. Increase the crystal size
Answer : A

18. Use of water having dissolved oxygen in boilers promotes
A. Corrosion
B. Sequestration
C. Scale formation
D. None of these
Answer : A

19. The chamber process is
A. Preferred over contact process for producing 98 to 100% H₂SO₄ and various oleums
B. Non-catalytic and operates only on pyrites
C. A batch process for directly producing high strength (98 to 100%) H₂SO₄
D. None of these
Answer : D

20. 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

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

22. 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

23. Digestion of wood-base materials (for manufacture of pulp) is done to
A. Remove lignin
B. Produce long fibres
C. Prevent deterioration on storage
D. None of these
Answer : A

24. Widely used method for the conditioning of boiler feed water is the
A. Cold lime process
B. Coagulation
C. Hot-lime soda process
D. Sequestration
Answer : C

25. Temporary hardness of water can be removed by
A. Addition of alum (a coagulant)
B. Boiling
C. Filtration (through gravity sand filter)
D. Addition of lime
Answer : B

26. The function of gypsum addition during cement making is to
A. Increase the density of cement
B. Decrease the cement setting rate
C. Both (A) and (B)
D. Neither (A) nor (B)
Answer : B

27. Lindane is
A. Not a fumigant
B. BHC (Benzene Hexachloride) containing 99% ?-isomer
C. A by-product of BHC manufacture
D. Both (B) and (C)
Answer : B

28. Yeast is used in the manufacture of
A. Penicillin
B. Antibiotics
C. Wine
D. Pasteurised milk
Answer : C

29. Hydrolysis of sugar is called
A. Hydration
B. Inversion
C. Esterification
D. None of these
Answer : B

30. Nitrile rubber is produced by the polymerisation of
A. Acrylonitrile and butadiene
B. Acrylonitrile and styrene
C. Isobutylene and isoprene
D. None of these
Answer : A

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

32. Tall oil obtained as a by-product from the black liquor recovery is
A. A black, sticky & viscous liquid
B. Used in the manufacture of greases, emulsions & soaps
C. Composed mainly of rosin & fatty acids
D. All (A), (B) & (C)
Answer : D

33. Trinitrotoluene (TNT), an explosive, is made by the nitration of
A. Nitrobenzene
B. Toluene
C. Nitrotoluene
D. Benzene
Answer : B

34. Pick out the wrong statement pertaining to nitric acid.
A. About 90% of nitric acid is manufactured by Ostwald's process
B. It is a strong mono basic acid which reacts with almost all the metals except noble metals
C. Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO2)
D. Arc process of nitric acid manufacture is economical as compared to Ostwald's process
Answer : D

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

36. Haemoglobin is a/an
A. Amino acid
B. Biological catalyst
C. Protein
D. Enzyme
Answer : C

37. Oils are partially hydrogenated (not fully) to manufacture Vanaspati, because fully saturated solidified oils
A. Cause cholesterol build up and blood clotting
B. Are prone to rancid oxidation
C. Always contain some amount of nickel (as their complete removal is very difficult)
D. Have affinity to retain harmful sulphur compounds
Answer : A

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

39. Parathion and Malathion are
A. Pesticides
B. Plasticisers for unsaturated polyesters
C. Pain-relieving drugs (analgesic)
D. Tranquilisers
Answer : A

40. Pick out the wrong statement.
A. Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators
B. Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur
C. Lead azide is a popular military explosive
D. TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being
Answer : D

41. 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
Answer : D

42. During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to
A. Increase the rate of absorption
B. Avoid corrosion
C. Reduce the cooling water circulation rate
D. None of these
Answer : B

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

44. Concentration of hydrogen peroxide is done by
A. Crystallisation
B. Vacuum crystallisation
C. Atmospheric distillation
D. Dehydration
Answer : B

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

46. Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre.
A. Cutting
B. Fibrillation
C. Hydration
D. Strengthening
Answer : D

47. What products do we get on electrolysis of saturated brine using steel cathode and graphite anode in an electrolytic cell?
A. Cl₂ & Na
B. Cl₂ & H₂
C. O₂ & H₂
D. Cl₂, H₂ & NaOH solution
Answer : D

48. Free alkali in a toilet soap is __________ that in a laundry shop.
A. Less than
B. More than
C. Same
D. None of these
Answer : A

49. __________ is a thermosetting plastic.
A. Polythene
B. Epoxy polymer
C. P.V.C.
D. Polystyrene
Answer : B

50. The most reactive allotropic form of phosphorus is __________ phosphorus.
A. Red
B. Yellow
C. Violet
D. Black
Answer : B