XAT - Chemical Process 1000+ MCQ [Solved] PDF Download

1. Nickel is not used as a catalyst in the __________ reaction.
A. Shift conversion
B. Oil hydrogenation
C. Steaming reforming of naphtha
D. Ammonia cracking/dissociation
Answer : A

2. Wax is a
A. Mixture of glycerides
B. Mixture of esters of polyhydric alcohols excepting glycerine
C. Liquid at room temperature
D. Mixture of glycerides of fatty acids
Answer : B

3. 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

4. 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

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

6. __________ Nature of hypo (sodium thiosulphate) makes it useful in photography.
A. Oxidising
B. Reducing
C. Complex forming
D. Photochemical
Answer : C

7. Terylene is
A. Same as Dacron
B. A polyester
C. Both (A) & (B)
D. Neither (A) nor (B)
Answer : C

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

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

10. 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

11. Which of the following is not an antibiotic?
A. Penicillin
B. Streptomycin
C. Tetracycline
D. Quinine
Answer : D

12. H2S is scrubbed from refinery gases by absorption using
A. Dilute H₂SO₄
B. Ethanol amine
C. Chilled water
D. Tri-butyl phosphate
Answer : B

13. Commercial production of Vanaspati is done by __________ of edible vegetable oils.
A. Hydrogenation
B. Oxidation
C. Hydrolysis
D. Hydrocracking
Answer : A

14. Hydrochloric acid is also known as
A. Oil of vitriol
B. Muriatic acid
C. Strong organic acid
D. Green acid
Answer : B

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

16. High purity nitrogen is used in
A. Making protective gas (95% N2 + 5% H2) for annealing of cold rolled steel strip coils
B. Fire fighting purposes
C. Both (A) & (B)
D. Neither (A) nor (B)
Answer : C

17. Yellow glycerine is made into white, using
A. Activated carbon
B. Diatomaceous earth
C. Bauxite
D. Bentonite
Answer : A

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

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

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

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

22. Teflon is
A. Phenol formaldehyde
B. An inorganic polymer
C. Poly tetra-fluoro-ethylene (P.T.F.E.)
D. A monomer
Answer : C

23. 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

24. At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system).
A. P
B. ?P
C. P²
D. 1/P
Answer : B

25. Thermoplastic materials
A. Do not soften on application of heat
B. Are heavily branched molecules
C. Are solvent insoluble
D. None of these
Answer : D

26. Which of the following impurities in feed water for high pressure boiler is the most detrimental?
A. Silica
B. Dissolved oxygen
C. Suspended salt
D. Dissolved salt
Answer : A

27. Pick out the true statement pertaining to water treatment.
A. Slow sand filters can remove colour completely
B. Activated carbon can be used for taste & odour control without subsequent filtration
C. Application of activated carbon reduces the temporary hardness of water
D. Normally, the turbidity is removed by adding a coagulant prior to sedimentation
Answer : D

28. Coloured glass is obtained by mixing of colored salts. Addition of __________ oxide is done to impart greenish blue color to the glass.
A. Chromium
B. Arsenic
C. Copper
D. Manganese
Answer : C

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

30. Rosin soap is added during paper manufacture to
A. Impart adhesive properties
B. Improve opacity
C. Impart resistance to penetration by liquids
D. None of these
Answer : C

31. Cation exchanger is regenerated usually with
A. NaOH
B. H₂SO₄
C. Hydrazine
D. Alum solution
Answer : B

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

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

34. __________ is not a constituent of gun powder.
A. Carbon
B. Charcoal
C. Sulphur
D. Potassium nitrate
Answer : A

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

36. Refractory bricks burnt at very high temperature have got
A. Greater resistance to corrosion by slags
B. Less resistance to corrosion by slags
C. High spalling tendency
D. None of these
Answer : A

37. Hard water
A. Does not affect the lather formation by soap
B. Is not unfit for drinking purpose
C. Pollutes the water stream
D. All (A), (B) and (C)
Answer : B

38. Enamels
A. Give good glossy finish
B. Are same as varnish
C. Are prepared from non-drying oil
D. Do not contain pigment
Answer : A

39. Pick out the wrong statement.
A. Hard glass which is used for making laboratory glass wares is a mixture of sodium borosilicate and aluminium borosilicate
B. Glass is decolorized during its manufacture by adding antimony oxide, manganese dioxide or arsenic oxide
C. Ordinary glass is represented chemically by Na₂O . CaO . 6SiO₂
D. Red color is imparted to glass by addition of arsenic oxide
Answer : D

40. Sodium chloride content in sea water is about __________ gms/litre.
A. 2
B. 10
C. 25
D. 50
Answer : C

41. Which of the following fuel gases contains maximum amount of carbon monoxide?
A. Coke oven gas
B. Water gas
C. Blast furnace gas
D. L.D. converter gas
Answer : D

42. 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

43. 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

44. Glass is
A. Mainly CaO
B. Subjected to galvanising
C. A super cooled liquid
D. All (A), (B) and (C)
Answer : C

45. Pick out the wrong statement.
A. Fibrillation of fibre during paper manufacture is done to develop the strength in paper
B. Alkali consumption in digestion/cooking of bamboo is measured in terms of permanganate number
C. Bagasse fibre contains both lignin & cellulose
D. Presence of sodium sulphate in pulp makes the pulp bleachability poor
Answer : D

46. Oxygen is produced by fractionation of air using __________ process.
A. Linde's
B. Claude's
C. Either (A) or (B)
D. None of these
Answer : C

47. 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

48. Which of the following processes can remove both temporary as well as permanent hardness of water?
A. Filtration
B. Boiling
C. Distillation
D. None of these
Answer : C

49. Fats as compared to oils have
A. More unsaturated glycerides of fatty acids
B. Less unsaturated glycerides of fatty acids
C. Much higher reactivity to oxygen
D. Lower melting point
Answer : B

50. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil.
A. Drying
B. Semi-drying
C. Non-drying
D. None of these
Answer : C