Chemical Process MCQ Solved Paper for FCI Recruitment

1. 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

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

3. 10% oleum comprises of 10% free
A. SO₂
B. H₂SO₃
C. SO₃
D. H₂SO₄
Answer : C

4. Mannheim furnace is used in the manufacture of
A. Hydrochloric acid
B. H₂SO₄ by Chamber process
C. Calcium carbide
D. Corundum
Answer : A

5. L.D. converter is used in the production of
A. Pig iron
B. Steel
C. Copper
D. Zinc
Answer : B

6. Titanium dioxide is a/an __________ colour pigment.
A. White
B. Black
C. Yellow
D. Blue
Answer : A

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

8. Manufacture of phthalic anhydride uses __________ as a catalyst.
A. Ni
B. Cr
C. V₂O₅
D. Al₂O₃
Answer : C

9. Which of the following is a disaccharide?
A. Sucrose
B. Glucose
C. Starch
D. Maltose
Answer : A

10. Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.
A. CaO
B. MnO₂
C. ZnO
D. FeS
Answer : C

11. Cumene (isopropyl benzene) is made by
A. Oxidation of naphthalene
B. Propylene alkylation of benzene
C. Polymerisation of a mixture of benzene & propylene
D. None of these
Answer : B

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

13. How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?
A. 500°C
B. 750°C
C. 1000°C
D. 1500°C
Answer : C

14. 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

15. 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

16. Fatty material used in soap making is
A. Fatty acid
B. Fatty alcohols
C. Tallow
D. Detergents
Answer : C

17. Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on
A. Slaked lime
B. Soda lime
C. Calcium perchlorate
D. None of these
Answer : A

18. 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

19. Pick out the exothermic reaction out of the following:
A. C + H₂O = CO + H₂
B. CaC₂ + H₂O = Ca(OH)₂ + C₂H₂
C. MgCO₃ = MgO + CO₂
D. All (A), (B) and (C)
Answer : B

20. Bakelite is
A. Same as Polytetrafluoroethylene (PTFE)
B. An inorganic polymer
C. Same as thermosetting phenol-formaldehyde
D. Not a polymer
Answer : C

21. Fumigant insecticides
A. Kill insects, when they eat it
B. Emit poisonous vapour
C. Are absorbed throughout the plant
D. None of these
Answer : B

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

23. In multistage equilibrium conversion of SO₂ to SO₃ (2SO₂ + O₂ ? 2SO₃), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO₂ to SO₃ can be increased by
A. Increasing the oxygen concentration
B. Putting more quantity of V2O5 catalyst in the converter
C. Removing some quantity of SO3 during intermediate stage
D. Maintaining low temperature & pressure in the converter
Answer : C

24. __________ is the major constituent of the Portland cement.
A. Calcium carbonate
B. Calcium oxide
C. Tricalcium silicate
D. Calcium sulphate
Answer : C

25. Which of the following is an explosive?
A. Nitro-glycerine
B. Trinitrotoluene (TNT)
C. Cellulose nitrate
D. All (A), (B), and (C)
Answer : D

26. 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

27. Vulcanisation of rubber
A. Decreases its tensile strength
B. Increases its ozone & oxygen reactivity
C. Increases its oil & solvent resistance
D. Converts its plasticity into elasticity
Answer : D

28. Which of the following sugars is the sweetest?
A. Glucose
B. Fructose
C. Sucrose
D. Lactose
Answer : B

29. Phthalic anhydride is produced by the oxidation of
A. Naphthalene
B. Benzene
C. Toluene
D. Aniline
Answer : B

30. Cellulose content of bamboo and ideal fibrous raw material for the manufacture of paper is __________ percent.
A. 10
B. 50
C. 80
D. 95
Answer : B

31. Which of the following is the main constituent of the mother liquor produced in salt industry?
A. Quick lime
B. Glauber's salt
C. Salt petre
D. Bromine
Answer : D

32. Boiling of water containing temporary hardness produces
A. CO₂
B. CaSO₄
C. CaHCO₃
D. None of these
Answer : A

33. Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda?
A. Diaphragm electrolytic cell process
B. Mercury electrolytic cell process
C. Lime-soda process
D. None of these
Answer : C

34. A mixture of chlorine & sodium bromide acts as a/an
A. Insecticides
B. Analgesic drug
C. Fire retardant
D. Hydrogenation catalyst
Answer : C

35. 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

36. 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

37. 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

38. Oxidation of ortho-xylene in presence of __________ catalyst is done to produce phthalic anhydride on commercial scale.
A. Nickel
B. Vanadium
C. Alumina
D. Iron
Answer : B

39. Which of the following is not a product of coal tar distillation?
A. Anthracene
B. Creosote oil
C. Carbolic oil
D. None of these
Answer : D

40. Saponification value/number of an oil or fat is a measure of its
A. Fatty acid content
B. Degree of unsaturation of the fatty acids present in it
C. Average molecular weight
D. Insoluble fatty acid content
Answer : C

41. Pick out the wrong statement.
A. Strongly caking coal should not be used in the Lurgi gasifier
B. Acetylene gas cannot be used for illumination purpose
C. Water gas is called blue gas because of the color of the flame, when it is burnt
D. Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels
Answer : B

42. __________ paper is used in the manufacture of newsprint paper.
A. Ground-wood
B. Board
C. Tissue
D. Wrapping
Answer : A

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

44. Paper pulp produced by Kraft/sulphate process is
A. Bleached easily
B. Dull white in color
C. Strong fibrous
D. Dark colored
Answer : C

45. 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

46. 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

47. Pick out the wrong statement pertaining to the soap manufacture.
A. Transparent soaps are made by cold process
B. Organic pigments are used as colouring materials in the soap manufacture
C. Both laundry as well as toilet soaps are manufactured by hot process
D. Colourless rosin is used in the manufacture of laundry soaps
Answer : A

48. 'Hollander beater' machine used in the paper manufacturing plant does not accomplish the task of
A. Final rolling out of paper
B. Cutting of fibres
C. Hydration of fibres
D. Fibrillation of fibre
Answer : A

49. Styrene (a monomer for the production of polystyrene) is commercially produced by
A. Catalytic dehydrogenation of ethyl benzene
B. Dehydration of ethyl alcohol followed by hydrogenation
C. Reacting ethylene oxide with acetaldehyde
D. Fermentation of starch
Answer : A

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