JEE Main - Chemical Process 1000+ MCQ [Solved] PDF Download

1. Which of the following paper does not require a filler during manufacture?
A. Bond paper
B. Writing paper
C. Blotting paper
D. Coloured paper
Answer : C

2. Chemical formula of BHC, which is an insecticide is
A. C₆H₆Cl₆
B. C₆Cl₆
C. C₆H₅Cl
D. C₆H₄Cl₂
Answer : B

3. Poly Vinyl Chloride (P.V.C.) is a __________ material.
A. Thermosetting
B. Thermoplastic
C. Fibrous
D. Chemically active
Answer : B

4. 90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.
A. < 0
B. 10-30
C. 250-280
D. 500-600
Answer : B

5. Reverse osmosis is normally used for the
A. Separation of isotopes of uranium from gaseous uranium hexafluoride
B. Separation of helium from natural gas
C. Desalination of brackish water to produce potable (drinking) water
D. Purification of oxygen
Answer : C

6. High temperature carbonisation of coal produces
A. Inferior coke compared to low temperature carbonisation
B. Less of gases compared to liquid products
C. Larger quantity of tar compared to low temperature carbonisation
D. None of these
Answer : D

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

8. DDT should not be allowed to come in contact with iron (during its manufacture) to
A. Avoid its decomposition
B. Prevent sulphonation of the monochlorobenzene by the acid catalyst
C. Achieve non-hygroscopic property
D. None of these
Answer : A

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

10. Pick out the endothermic reaction out of the following.
A. C+ ½O₂ = CO
B. CO + 3H₂ = CH₄ + H₂O
C. CaCO₃ = CaO + CO₂
D. CO + ½O₂ = CO₂
Answer : C

11. Carbon content of pitch (residue of coal tar distillation) is around __________ percent.
A. 70
B. 55
C. 80
D. 94
Answer : D

12. 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

13. Calcareous & argillaceous materials are used in the manufacture of
A. Lead
B. Cement
C. Carbon disulphide
D. None of these
Answer : B

14. Fourdrinier machine is used in the manufacture of
A. Sugar
B. Paper
C. Alcohol from molasses
D. Phenol formaldehyde
Answer : B

15. Pick out the wrong statement. Iodine value of an oil or fat is
A. The number of grams of iodine taken up by 100 gm of oil or fat
B. A measure of its unsaturation
C. Helpful in findings its adulteration & its suitability for making soap
D. Independent of the type of oil, whether it is drying or non-drying
Answer : D

16. Phenolic antiseptics are added in the __________ soap.
A. Shaving
B. Medicated
C. Metallic
D. Transparent
Answer : B

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

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. Oxidation of SO₂ to SO₃ is favoured by
A. Low temperature and low pressure
B. Low temperature and high pressure
C. High temperature and low pressure
D. High temperature and high pressure
Answer : B

20. Phosphate rock is a raw material for the manufacture of
A. Phosphoric acid
B. Phosphorous
C. Superphosphates
D. All (A), (B) and (C)
Answer : D

21. Chemical name of 'alum' is
A. Barium sulphate
B. Aluminium sulphate
C. Aluminium chloride
D. Calcium sulphate
Answer : B

22. In contact process, SO₃ is absorbed in 97% H₂SO₄ and not in water, because
A. SO₃ gas is sparingly soluble in water
B. Water forms an acid mist, which is difficult to absorb
C. The purity of acid is affected
D. Scale formation in the absorber is to be avoided
Answer : B

23. Nickel is not used as a catalyst in the
A. Fischer-Tropsch process
B. Shift conversion
C. Hydrogenation of oil
D. Ostwald's process of HNO3 manufacture
Answer : D

24. RDX (an explosive), which is more sensitive but less toxic than TNT, is chemically
A. Cyclo trimethylene trinitramine
B. Trinitro resorcinol
C. Cyclo tetramethylene tetranitramine
D. Trinitrobenzene
Answer : A

25. Metallic soap is __________ salt of fatty acids.
A. Sodium
B. Potassium
C. Both sodium & potassium
D. Aluminium or calcium
Answer : D

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

27. The most stable allotropic form of phosphorous is the __________ phosphorous.
A. White
B. Black
C. Yellow
D. Red
Answer : B

28. Le-Blanc process is a primitive process for the manufacture of
A. Caustic soda
B. Soda ash
C. Bromine from sea water
D. Hydrochloric acid
Answer : B

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

30. Polymethyl methacrylate (PMMA) is known as
A. Bakelite
B. Teflon
C. Perspex
D. Nylon-6
Answer : C

31. Gun powder, which is an explosive comprises of charcoal, sulphur and
A. Glycerine
B. Salt petre
C. Nitro glycerine
D. Dynamite
Answer : B

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

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

34. __________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace.
A. Bauxite
B. Limestone
C. Quartz
D. Manganese
Answer : B

35. Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about __________ percent.
A. 75
B. < 10
C. > 30
D. 50
Answer : B

36. 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

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

38. Varnish does not contain
A. Thinner
B. Pigment
C. Both (A) & (B)
D. Neither (A) nor (B)
Answer : B

39. The product obtained on mixing calcium oxide with water is called
A. Quicklime
B. Slaked lime
C. Milk of lime
D. None of these
Answer : B

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

41. 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

42. The difference between saponification value and acid value is
A. Called ester value
B. Always negative
C. Constant for all fatty oils
D. None of these
Answer : A

43. Massecuite is
A. Used for paper making
B. Used as a cattle feed
C. Highly acidic in nature
D. None of these
Answer : D

44. Which of the following is not a raw material used for the manufacture of ordinary glass?
A. Iron oxide
B. Soda ash
C. Limestone
D. Silica
Answer : A

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

46. Epoxy resin
A. Is a good adhesive
B. Is an elastomer
C. Cannot be used for surface coatings
D. Is a polyester
Answer : A

47. Massecuite is a terminology used in the __________ industry.
A. Paint
B. Oil hydrogenation
C. Soap
D. Sugar
Answer : D

48. Yellow phosphorus is transported under
A. Air
B. Water
C. Nitrogen
D. Helium
Answer : B

49. Fat dispersed in water is exemplified by
A. Colloids
B. Gel
C. Butter
D. Emulsion
Answer : C

50. Which one of the following is not likely to be a constituent of vegetable oils?
A. Citric acid
B. Oleic acid
C. Stearic acid
D. Glycerol
Answer : A