Chemical Process MCQ Solved Paper for CEED

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 not a pyrite ore?
A. Celestite
B. Galena
C. Gypsum
D. Siderite
Answer : D

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

4. Aryl benzene sulphonate (ABS) is a
A. Detergent
B. Plasticiser for unsaturated polyester
C. Starting material for the synthesis of glycerine
D. Coating ingredient for photographic film
Answer : A

5. Styrene is produced from ethyl benzene by the process of
A. Dehydrogenation
B. Oxidation
C. Alkylation
D. Dehydration
Answer : A

6. __________ 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

7. Na₂CO₃.10H₂O is called
A. Washing soda
B. Soda ash
C. Slaked lime
D. Quicklime
Answer : A

8. Which of the following is not required in the manufacture of soda ash by Solvay process?
A. Ammonia
B. Limestone
C. Nitric acid
D. None of these
Answer : C

9. Thermal pyrolysis of ethylene dichloride produces
A. Trichloroethylene
B. Vinyl chloride
C. Ethanol amine
D. Ethylene oxide
Answer : B

10. Separation of fresh water from sea water can be done by the __________ operation.
A. Osmosis
B. Reverse osmosis
C. Absorption
D. Adsorption
Answer : B

11. Catalyst used in the hydrogenation of oil is
A. Nickel
B. Platinum
C. Iron
D. Alumina
Answer : A

12. Cumene is the starting material for the production of
A. Benzoic acid
B. Phenol and acetone
C. Isoprene
D. Styrene
Answer : B

13. Polyvinyl chloride (PVC) is
A. A thermosetting material
B. A condensation polymerisation product
C. Made by employing emulsion polymerisation
D. None of these
Answer : C

14. 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
Answer : D

15. Which of the following is an ore of iron?
A. Galena
B. Chalcopyrite
C. Hematite
D. Bauxite
Answer : C

16. The major use of butadiene is
A. As a plasticiser for unsaturated polyester
B. In the manufacture of synthetic rubber
C. As an anti-skinning agent in paint
D. None of these
Answer : B

17. Pasteurisation of milk means
A. Removal of fatty and albuminous substance from it
B. Killing of organisms present in it by heating it at controlled temperature without changing its natural characteristics
C. Inhibiting the growth of micro-organisms without killing them
D. None of these
Answer : B

18. __________ is used as a catalyst in fat splitting.
A. ZnO
B. Ni
C. V₂O₅
D. FeO
Answer : A

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

20. Molecular weights of polymers are in the range of
A. 10² - 10²
B. 10⁵ - 10⁹
C. 10² - 10⁷
D. 10⁹ - 10¹¹
Answer : C

21. Hydrogenation of edible vegetable oils
A. Is an exothermic reaction
B. Increases their melting point
C. Is done in presence of nickel catalyst
D. All (A), (B) and (C)
Answer : D

22. Vinyl chloride (CH2 = CH.Cl) is produced by the thermal pyrolysis of ethylene dichloride at a pressure & temperature of
A. 4 kgf/cm² & 500°C
B. 10 kgf/cm² & 1000°C
C. 40 kg/cm² & 200°C
D. 100 kgf/cm² & 500°C
Answer : A

23. Ore concentration by froth floatation utilises the __________ of ore particles.
A. Density difference
B. Wetting characteristics
C. Terminal velocities
D. None of these
Answer : B

24. Solvay process is used for the manufacture of
A. Caustic soda
B. Soda ash
C. Caustic potash
D. Soda lime
Answer : B

25. Multistage catalytic converter is not used in the
A. Conversion of SO2 to SO3
B. NH3 synthesis reaction
C. Both (A) and (B)
D. Neither (A) nor (B)
Answer : B

26. Mercury cells for caustic soda manufacture, compared to diaphragm cells
A. Require lower initial investment
B. Require more power
C. Produce lower concentration NaOH
D. None of these
Answer : D

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

28. Solvent used for extraction of oil is
A. Hexane
B. Methyl ethyl ketone
C. Furfural
D. None of these
Answer : A

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

30. Alkylbenzene sulfonate (ABS) is a
A. Detergent
B. Rubber
C. Pesticide
D. Polyester
Answer : A

31. Phosphoric acid is prepared from
A. Cryolite
B. Chalcopyrite
C. Rock phosphate
D. None of these
Answer : C

32. In the manufacture of viscose rayon, the raw material used industrially is
A. Eucalyptus wood
B. Bamboo
C. Bagasse
D. Fine teak wood
Answer : D

33. __________ 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

34. 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

35. Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of
A. Nitric acid
B. Sulphuric acid
C. Ammonium sulphate
D. Hydrochloric acid
Answer : B

36. Pick out the wrong statement.
A. Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively
B. Protein catalysts are called enzymes
C. The rate of chemical reaction is independent of the concentration of reactants at high concentration of enzymes
D. Total sugar content in molasses is about 10%
Answer : D

37. Brackish water which contains mostly dissolved salt, can be purified by the __________ process.
A. Reverse osmosis
B. Sand filter
C. Lime soda
D. Permutit
Answer : A

38. Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used
A. As a lubricant
B. As a rust preventive
C. In hard water for cleaning of cloth
D. As a foam depressant in distillation column
Answer : A

39. Ultimate analysis of coal determines its __________ content.
A. Carbon, hydrogen, nitrogen & sulphur
B. Carbon, ash, sulphur & nitrogen
C. Carbon, sulphur, volatile matter & ash
D. Carbon, volatile matter, ash & moisture
Answer : C

40. Sucrose is a
A. Monosaccharide
B. Disaccharide
C. Polysaccharide
D. None of these
Answer : B

41. Inversion of sucrose produces
A. Fructose
B. Glucose
C. Both (A) & (B)
D. Neither (A) nor (B)
Answer : B

42. Magnesium and calcium __________ cause temporary hardness of water.
A. Carbonates
B. Bicarbonates
C. Phosphates
D. Sulphates
Answer : B

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

44. Which of the following is not produced commercially from sea water?
A. Magnesium & potassium compounds
B. Common salt
C. Bromine
D. Iodine
Answer : D

45. 10% oleum comprises of 10% free
A. SO₂
B. H₂SO₃
C. SO₃
D. H₂SO₄
Answer : C

46. Bordeaux mixture is a/an
A. Fertiliser
B. Inorganic fungicide
C. Insecticide
D. Explosive
Answer : B

47. Which of the following processes is absent in glass manufacturing process?
A. Sintering
B. Annealing
C. Shaping or forming
D. Melting
Answer : A

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

49. Highly porous refractory bricks are
A. Less susceptible to chemical attack by molten fluxes and gases etc
B. Very strong
C. Having very high thermal conductivity
D. None of these
Answer : D

50. Catalytic oxidation of toluene produces
A. Styrene
B. Phenol
C. Benzene
D. Tri-nitro-toluene
Answer : B