702 Materials - Gokul University

 MULTIPLE CHOICE QUESTIONS- MCQ

1. Polymer formation from monomers starts by? Ans. condensation reaction between monomers

2. Bakelite is obtained from phenol by reacting with…. Ans. HCHO

3. Nylon-6, 6 is obtained by condensation polymerization of…… Ans. adipic acid and hexamethylenediamine

4. CF2=CF2 is a Monomer of….. Ans. Teflon

5. What is the type of Novolc polymer? Ans. Linear

6. Bakelite is produce from….. Ans. Reaction of formaldehyde phenol

7. Orlon has a unit. Ans. Acrolein

8. Dacron formation from monomer starts by. Ans. D.M.T + ethylene glycol

9. Which of the following is a Biodegradable? Ans. PHBV

10. Which of these is used as a solvent for dry cleaning? Ans. Petrol

11. The monomer used to produce Orlon is? Ans. CH2=CHCN

12. Which of the following is a synthetic polymer? Ans. Phenol formaldehyde resin

13. Main constituent of natural gas is. Ans. Methane

14. The material mainly made from natural or synthetic sources is called. Ans.

Textile fibers

15. Which of these is used for making Naphthalene balls? Ans. Coaltar

16. The slow process of conversion of dead vegetation into coal is called Ans.

Carbonization

17. Which of the following is consisting of chemical Resistant paint? Ans. Chlorinated Rubber

18. Zeiglernatta catalyst is used in the polymerization of Ans. Propylene

19. Which of the following statements is correct? Ans. Naplam is a flammable liquid, Naplam used in bombs.

20. Turpentine oil is used in paints as. Ans. Drier

 

21. Give the IUPAC name of Pentryl. Ans. sym trinitrophenyl nitraamino methyl nitrate

22. Which of the following is a white pigment? Ans. TiO2, ZnO

23. Soft soaps are the limitation of hot process because of their..... Ans. High solubility in water

24. Give the chemical name of mustard oil. Ans. Bis (2-chloroethyl)sulphide

25. Correct structure for Chloropicrin. Ans. CCl3NO2

26. When coal burns in air then… Ans. Carbon dioxide is formed

27. substance accelerates the process of drying. Ans. Drier

28. What are the uses of phenyl? Ans. Cleaner, killed germs, Deoduringsing

29. Which of the following chemical is added in washing powder for keeping it dry? Ans. Sodium silicate, Inorganic phosphate, Sodium perborate

30. Which of the following has the lowest viscosity of all? Ans. Naptha

31. PCRA stands for Ans. Petroleum Conservation Research Association

32. The brown coal is ……… Ans. lignite

33. Substances that burn in air to give heat energy are called …… Ans. fuels

34. By which process does the impurities of coal are generally removed? Ans. Wet washing

35. Which of the following is used for the removal of impurities by heavy media separation in industries? Ans. Magnetite

36. For coarse fractions of dewatering of coal, which of the following process is used? Ans. Centrifugation

37. Froth flotation process is used for Ans. Beneficiation of coal

38. Which of the following is not an advantage of the cleaning of coal? Ans. It increases the cost of the coal

39. What is the main purpose for a blending of coal? Ans. To produce good quality of coal

40. Which of the following is a disadvantage of storing coal for a long period of time? Ans. Increase in the proportion of fine

41. How do the chances of spontaneous combustion of coal can decrease? Ans. Increase in the maturity of coal

 42. From  the   raw   piece,  coal  is   manufactured  by crushed ? Ans. perfectly

 43. The moisture content in the coal can be given by heating the coal for  hours. Ans. 1

44. To find the % of volatile matter in coal, it must be heated in the crucible at temperature Ans. 9250C+200C

45. To  calculate  the  % of ash  content the  dry coal  is  heated in   

Ans. muffle furnace

 46. High % of moisture is undesirable because   cost of transport 

Ans. increases the

 47. The moisturizing the coal before introducing into furnace is called as: Ans. tempering

48. Ultimate analysis of coal is also called as: Ans. qualitative analysis

49. In determination of % of C and H, the coal is burnt in the stream of 

Ans. pure oxygen

50. % of nitrogen can be determined by the process: Ans. kjeldahl’s method

51. An increase in 1% of percentage of oxygen decreases the calorific value by

  Ans. 1.7%

52. Name the polymer formed by the polymerization of ω-amino caproic acid using water as a catalyst? Ans. nylon 6

53. Which of the following mechanism takes place for the formation of high molecular weight Nylon 6 from Caprolactum? Ans. anionic mechanism

54. Which of the following polyamides are known as aramids? Ans. aromatic polyamides

55. Which of the following can help in achieving the mechanical properties of

nylons? Ans. nucleating agents

56. Which of the following monomer pair polymerizes to give an aramide? Ans. terephthaloyl chloride + phenylene diamine

57. Which of the following nylons has a lower specific gravity than the others?

Ans. nylon 6, nylon 66

 58. How the viscosity of aromatic polyamide solutions does vary with the increase in volume fraction of polymer formed? Ans. first increases then decreases

59. In how many layers is oil paint applied to a surface? Ans. 3

60. Emulsion Paints contain: Ans. Polyvinyl acetate

61. Anticorrosive paint is in colour. Ans. Black

62. In which of the below, it is not necessary to remove existing paint to apply a new one? Ans. Cement paints

63. Synthetic rubber paints are prepared from: Ans. Resin

64. What is used to make paints odorless to an extent? Ans. Plioway resins

65. Spray painting is used to: Ans. Apply paint without touching surface

66. Which of the below has a sheen and is highly washable? Ans. Acrylic satin

67. Substances accelerate the process of drying. Ans. Drier

68. is the most reactive of drier metals and is generally regarded as a surface drier. Ans. Cobalt

69. The sulphate of is used with zinc paint so as to eliminate the risk of discoloration of a lead drier. Ans. Manganese

70. The function of is to make the paint thin so that it can be easily applied on the surface. Ans. Solvent

71. The is inflammable, evaporates rapidly and dries the oil

consequently. Ans. Turpentine

72. The is a transparent volatile liquid and it is obtained by distilling the resinous exudation of some varieties of Pine trees. Ans. Turpentine

73. is suspended in either quick drying spirit varnish or slow drying oil varnish as per requirement. Ans. Aluminum paint

74. essentially consist of oil and stronger drier. Ans. Anti-corrosive paint

75. is prepared by dissolving Asphalt or mineral pitches or Vegetable bitumen in any type of oil or Petroleum. Ans. Bituminous paint

76. is prepared from nitro cotton, celluloid sheets, photographic films, etc. Ans. Cellulose paint

 77. consists of white cement, pigment, accelerator and other additives. Ans. Cement paint

78.   contains binding material such as polyvinyl Acetate,

synthetic resins, etc. Ans. Emulsion paint

79. contains white lead, zinc white, oil, Petroleum spirit and resinous matter. Ans. Enamel paint

80. contains calcium sulphide with varnish. Ans. Luminous paint

81. contains the necessary variety of plastic and it is available in the market under different trade names. Ans. Plastic paint

82. are cheaper varieties of paint. Ans. Distempers

83. In a white wash, after how many hours is dissolved gum added to the solution? Ans. 24 hours

84. Paint normally consists of components. Ans. 6

85. Paint gets deteriorated when exposed to sun. Ans. Bituminous

86. The component filler in paint does the function of: Ans. Reducing cost

87. Saponification is a defect on the painted surface and it is identified by the appearance of: Ans. Soapy patches

88. Which paint contains polystyrene as a base? Ans. Emulsion

89. How many ingredients is varnish composed of? Ans. 3

90. Which of the below is not an artificial resin? Ans. Shellac

91. Driers in varnish are used as: Ans. Accelerators

92. Wood naphtha, a cheap variety of resin, is also called: Ans. Methyl alcohol

93. The word varnish is derived from the word: Ans. Latin Vernix

94. Which of the below is an oil based varnish? Ans. Polyurethane

95. Which of the below is most commonly used resin in commercial varnishes?

Ans. Alkyd

 

96.  Spirit Varnish is also called French varnish and used for furniture. Ans. Spirit

 97. The term is used to indicate the solution of resins or resinous substances prepared either in alcohol, oil or turpentine. Ans. Varnish

 98. The is obtained by exudation of some types of insects in India.

Ans. Lac

99. The  Function of a in varnish is to accelerate the process of drying. Ans. Drier

100. are specially adapted for exposed works which require frequent cleaning. Ans. Oil Varnish

101. The  methylated  Spirits of  wine  are used  as a  solvent in Ans. Spirit Varnish

102. The French polish is a variety of class of varnish. Ans. Spirit

103. The  turpentine  is  used as a solvent in type of Varnish. Ans. Turpentine

104. Separation of liquid by distillation is based on. Ans. Vapour pressure

105. How many numbers of carbons in Adipic Acid? Ans. 6