Chemist In Factories and Boilers - Question Paper and Answer Key


Question Code: 009/2020

Medium of Question- ENGLISH

Chemist In Factories and Boilers

Date of Test: 04 02 2020

1. Which of the following is a carbonate ore?
(A) Magnetite
(B) Siderite
(C) Rutile
(D) Pyrolusite

2. Nitriding is the process of :
(A) heating steel with ammonia
(B) heating steel with nitrogen oxides
(C) heating steel with nitrogen gas
(D) keeping steel in inert atmosphere

3. Which of the following is an acidic refractory material?
(A) Graphite
(B) Silica
(C) Carborundum
(D) Dolomite

4. Addition of sodium dichromate to molten glass imparts _________ colour to glass.
(A) Green
(B) Yellow
(C) Red
(D) Violet

5. Cinnabar is ore of :
(A) Pb
(B) Hg
(C) Sn
(D) Ti

6. NPK value of a fertilizer denotes the nitrogen, phosphorous and potassium contents in terms of _________ respectively.
(A) Elementary nitrogen, P2O5, K2O
(B) N2O, elementary phosphorous, elementary potassium
(C) Elementary nitrogen, elementary phosphorous, elementary potassium
(D) N2O, P2O5, KCl

7. Alnico is an alloy of :
(A) Cu, Ni, Al, Co
(B) Fe, Co, Al ,Ni
(C) Al, Co, Ni
(D) Al, Ni, Cu

9. Which one is direct fertilizer?
(A) Gypsum
(B) Lime
(C) sodium carbonate
(D) Super phosphate

10. Chemical formula of triphosphazene is :
(A) N3P3Cl6
 (B) N3P3Cl3
(C) N3P3O6
(D) N3P3O3

11. Which type of glass is used for making lenses?
(A) lead glass
(B) soft glass
(C) crooks glass
(D) pyrex glass

12. Cupellation is involved in the metallurgy of :
(A) Sn
(B) Ag
(C) Zn
(D) Al

13. Clay belongs to :
(A) orthosilicate
(B) chain silicate
(C) cyclic silicate
(D) sheet silicate

14. Identify the aprotic solvent :
(A) H2O
(B) CHCl3
(C) NH3
(D) HF

15. In thermite process reducing agent employed is :
(A) Carbon
(B) Aluminium
(C) Magnesium
(D) Chromium

16. Which of the following is true for solutions showing dissociation?
(A) Vant Hoff factor is less than one
(B) Vant Hoff factor is greater than one
(C) Vant Hoff factor is equal to one
(D) Vant Hoff factor is equal to zero

17. The heat of combustion of CH4(g), C(s) and H2(g) at 25°C are –212.4 kcal, –94.0 kcal and –68.4 kcal respectively. Heat of formation of CH4 will be :
(A) + 50.0 kcal
(B) + 18.4 kcal
(C) – 18.4 kcal
(D) + 212.8 kcal

18. Osmotic pressure of equimolar solutions of sugar (I), AlCl3 (II) and BaCl2 (III) is in the order of :
(A) I = II = III
(B) II > III > I
(C) I > III > II
(D) III > II > I

19. In cold countries ethylene glycol is added to water in radiators of automobiles during winter.
This is to :
(A) lower the boiling point
(B) lower the freezing point
(C) reduce visocity
(D) increase the vapour pressure

20. If 50 ml of 2N HCl is mixed with 50 ml of 2M KOH ,the solution will be :
(A) acidic
(B) neutral
(C) basic
(D) cannot be predicted

21. If the solubility of a salt Ag2SO4 is X mol/litre, then solubility product is :
(A) 3X
(B) X3
(C) 3X2
(D) 4X3

22. pH of solution is 3.0 .If its hydrogen ion concentration is decreased by 100 times ,then the pH of the solution becomes :
(A) 1.0
(B) .03
(C) 5.0
(D) 9.0

23. Purple of Cassius is :
(A) colloidal solution of silver
(B) colloidal solution of gold
(C) colloidal solution of platinum
(D) colloidal solution of starch

24. Heat of neutralization of strong acid and strong base is :
(A) – 57.1 KJ/mol
(B) + 13.7 KJ/mol
(C) – 13.7 KJ/mol
(D) + 57.1 KJ/mol

25. Relationship between the molar specific heat at constant pressure (Cp) and the molar specific heat at constant volume (Cv) is :
(A) Cp + Cv = R
(B) Cp/Cv = R
(C) Cp – Cv = R
(D) Cp/Cv = l

26. Which of the following is true about the octane number of isooctane, n-butane and n-hexane?
(A) isooctane > n-hexane> n-butane
(B) isooctane > n-butane> n-hexane
(C) n-hexane> n-butane> isooctane
(D) n-hexane > isooctane> n-butane

27. First stage of coal formation is :
(A) Lignite
(B) Bituminous
(C) Peat
(D) Anthracite

28. Which of the following is a secondary fuel?
(A) coal gas
(B) natural gas
(C) peat
(D) petroleum

29. The reaction of isobutane and isobutene in presence of anhydrous HF at room temperature yields :
(A) isooctane
(B) n-octane
(C) n-decane
(D) heptane

30. Sweetening of petroleum is the process of :
(A) desulphurisation
(B) de-emulsification
(C) addition of antiknocking agents
(D) fractional distillation

31. The main components of natural gas is
(A) methane and butane
(B) methane and ethane
(C) methane and isooctane
(D) butane and isooctane

32. Which of the following cannot be purified by sublimation?
(A) iodine
(B) arsenic oxide
(C) ammonium chloride
(D) calcium chloride

33. Sulphur containing amino acid is :
(A) aspartic acid
(B) leucine
(C) glycine
(D) cysteine

34. _________ is a maximum boiling azeotrope.
(A) 95% ethanol and 5% water
(B) 68% nitric acid and 32% water
(C) 60% chloroform and 40% benzene
(D) 50% ethanol and 50% water

35. Sesquiterpenoids contains _________ number of isoprene units.
(A) 1
(B) 2
(C) 3
(D) 4

36. Alkaloid nicotine contains _________ nucleus.
(A) pyridine
(B) pyrrole
(C) benzene
(D) furan

37. Major fattyacid present in coconut oil is :
(A) caproic acid
(B) stearic acid
(C) oleic acid
(D) lauric acid

38. Which one is not a drying agent?
(A) calcium chloride
(B) calcium oxide
(C) calcium sulphate
(D) calcium carbonate

39. Oil of rose contains :
(A) citral
(B) geraniol
(C) camphor
(D) coniine

40. Vinca alkaloids are used as _________ drugs.
(A) antimalarial
(B) antibiotic
(C) anticancer
(D) antipyretic

41. A Molal solution is one that contains one mole of the solute in :
(A) 1 litre of solution
(B) 100 gm of solvent
(C) 1 litre of solvent
(D) 22.4 litre of solvent

42. In the titration of K iodometrically, near the end point the colour of the solution 2Cr2O7 becomes :
(A) green
(B) red
(C) yellow
(D) blue

43. The Indicator used in iodometric titration is :
(A) KI
(B) Litmus
(C) Methyl orange
(D) Starch

44. In qualitative analysis cd is under :
(A) I group
(B) II group
(C) III group
(D) IV group

45. A mixture when rubbed with organic acid smells like vinegar. It contains :
(A) sulphite
(B) nitrate
(C) nitrite
(D) acetate

46. Which of the following is a primary standard?
(A) KMnO
(B) 4 2I
(C) Na
(D) 2CO3 H 2SO4

47. When Cl NH4 is added to OH NH4 solution the dissociation of ammonium hydroxide is reduced :
(A) common ion effect
(B) hydrolysis
(C) oxidation
(D) reduction

49. The basis principle of paper chromatography is :
(A) adsorption
(B) partition
(C) absorption
(D) diffusion

50. Which parameter is measured in thermogravimetry?
(A) change in temperature
(B) change in mass
(C) reflectance
(D) change in enthalpy

51. Amino acid composition of protein is determined by :
(C) Electrophoresis
(D) Ion-exchange chromatography

52. 0.1 N solution of Na is being titrated with 0.1 N HCl, the best indicator to be used is : 2CO3
(A) Potassium ferri cyanide
(B) Phenolphthalein
(C) Methyl orange
(D) Litmus

53. Which property is measured in absorption spectrophotometry?
(A) Absorption of radiation
(B) Optical density of the solution
(C) Refractive index
(D) Voltage

54. Calculate significant figures in 21.697 – 20.802 :
(A) 2
(B) 4
(C) 3
(D) 5

55. Normality of 2 M H is : 2SO4
(A) 4 N
(B) 2 N
(C) 0.5 N
(D) 0.25 N

56. The reagent commonly used to determine hardness of water titrimetrically is :
(A) Disodium salt of EDTA
(B) Oxalic acid
(C) Sodium thiosulphate
(D) Sodium citrate

57. What is the weighing form of gravimetric estimation of iron?
(A) Fe
(B) FeO 2O3
(C) Fe
(D) 3O4 2 Fe (OH)

58. Dimethyl Glyoxime is used for the test of —————— in alkaline medium.
(A) Hg
(B) Zn
(C) Co
(D) Ni

59. Scientific creativity originates from :
(A) knowledge
(B) various skills
(C) experiments
(D) imagination

60. Nebulization is a term associated with :
(A) chromatography
(B) colloids
(C) atomic absorption spectroscopy
(D) solvent extraction

61. Ozone layer is present in :
(A) troposphere
(B) stratosphere
(C) mesosphere
(D) exosphere

62. Which air pollutant is not released by automobiles?
(A) SO
(B) Hydrocarbon 2
(C) Fly ash
(D) CO

63. When huge amount of sewage is dumped in a river, the BOD will :
(A) increase
(B) decrease
(C) remain unchanged
(D) none of these

64. Which of the following is the uppermost region of the atmosphere?
(A) stratosphere
(B) troposphere
(C) exosphere
(D) none of these

65. Depletion of ozone layer causes :
(A) blood cancer
(B) lung cancer
(C) skin cancer
(D) breast cancer

66. In 1984, Bhopal gas tragedy took place because methyl isocyanate :
(A) reacted with DDT
(B) reacted with NH 3
(C) reacted with CO
(D) reacted with water 2

67. Which of the following is most abundant hydrocarbon pollutant?
(A) butane
(B) ethane
(C) methane
(D) propane

68. Which is true about DDT?
(A) Green house gas
(B) A fertilizer
(C) Bio degradable pollutant
(D) Non-Biodegradable pollutant

69. Sewage water is purified by :
(A) aquatic plants
(B) micro organisms
(C) light
(D) fishes

70. The greatest affinity for haemoglobin is shown by which of the following?
(A) NO
(B) CO
(C) O
(D) 2 CO 2

71. The polymer obtained from caprolactum is :
(A) Terylene
(B) Nylon-6
(C) Nylon-66

72. Plexi glass is a polymer of :
(A) Methyl methacrylate
(B) Acrolein
(C) Acrylonitrile
(D) Ethyl acrylate

73. Name a gas that causes Green house effect :
(A) Oxygen
(B) Nitrogen
(C) Carbon di oxide
(D) Hydrogen

74. Which one of the following is a hard detergent ?
(A) Potassium Pthalate
(B) Alkyl Benzene Sulphonate
(C) Lauryl Ethoxylate
(D) Sodium Stearate

75. Gun cotton is :
(A) Cellulose Hydrochloride
(B) Cellulose Acetate
(C) Cellulose Chloride
(D) Cellulose Nitrate

76. Flavour of pineapple can be obtained by mixing the additive :
(A) Amyl acetate
(B) Amyl oxalate
(C) Ethyl Butyrate
(D) Ethyl Acetate

77. Which one of the following is a naturally occurring dye ?
(A) Azo dye
(B) Vat dye
(C) Alizarin
(D) Indigo

78. The objective of ISO-9000 family of Quality management is :
(A) Employee satisfaction
(B) Skill enhancement
(C) Customer satisfaction
(D) Environmental issues

79. Soaps and detergents are :
(A) Ionic Compounds
(B) Non polar Compounds
(C) Molecular compounds
(D) Covalent compounds

80. When is a detergent more useful for cleaning than soap?
(A) Removing grease
(B) Emulsyfying oil dropllets
(C) Cleaning in hard water
(D) None of the answers are correct

81. Equanil is :
(A) Artificial sweetener
(B) Tranquilizer
(C) Antihistamine
(D) Antifertility drug

82. Polyethylene glycols are used in the preparation of which type of detergents?
(A) Cationic detergents
(B) Anionic detergents
(C) Non- ionic detergents
(D) Soaps

83. Which of the following chemicals can be added for sweetening of food items at cooking temperature and does not provide calories?
(A) Sucrose
(B) Glucose
(C) Aspartame
(D) Sucralose

84. Which of the following is NOT one of the twelve principles of green chemistry?
(A) Using renewable feedstock
(B) Designing safer chemicals and products
(C) Avoiding the use of catalysts
(D) Maximising atom economy

85. Green chemistry is also called as :
(A) Life chemistry
(B) Environmental Chemistry
(C) Organic Chemistry
(D) Sustainable Chemistry

86. _________ are greener than the conventional methods.
(A) Electromagnetic waves
(B) Micro waves
(C) Ultra violet waves
(D) Radio waves

87. C2H4 + 1/2 O2 --> C2H4O (Ethylene oxide). This reaction will takes place under presence of catalyst. Find out the % atom economy :
(A) 100%
(B) 75%
(C) 50%
(D) 25%

88. The bio diesel is the long chain of carbon atoms contains _________ group at one end.
(A) Alcohol
(B) Aldehyde
(C) Ester
(D) Ketone

89. Gas related to Bhopal tragedy was :
(A) Potassium Isocyanate
(B) Potassium Isothiocyanate
(C) Methyl Isocyanate
(D) Methyl Iso-thiocyanate

90. Which one of the following is not a condensation polymer?
(A) Dacron
(B) Neoprene
(C) Melamine
(D) Bakelite

91. Which of the following is a chain growth polymer?
(A) Polystyrene
(B) Nucleic acid
(C) Protein
(D) Starch

92. Presence of _________ in a dry gaseous fuel does not contribute to its calorific value.
(A) Sulphur
(B) Hydrogen
(C) Oxygen
(D) Carbon

93. Which of the following is not a permitted synthetic food colour?
(A) Indigo carmine
(B) Rhodamine B
(C) Tartrazine
(D) Erythrosine

94. The advantage of using conducting polymers in place of metals is their :
(A) Cost
(B) Light-weight
(C) Thermal conductivity
(D) Solubility

95. Laboratory gas is obtained by the cracking of :
(A) Gasolene
(B) Diesel
(C) Fuel oil
(D) Kerosene

96. Using Chromatogram as detector in Chromatography, a graph is obtained between _________ and time.
(A) Quantity
(B) Density
(C) Concentration
(D) Specific gravity

97. In photometers, the readings of the specimen are initially obtained in the form of which of the following parameters?
(A) Transmittance
(B) Absorption
(C) Volume
(D) Wavelengths

98. Which of the following organic compounds will have the highest intensity of response when introduced in a flame ionization detector?
(A) Ethane
(B) Butane
(C) Methane
(D) Propane

99. Which of the following hydrocarbon series are almost absent in crude petroleum?
(A) Paraffins
(B) Naphthenes
(C) Aromatic
(D) Olefins

100. Occupational Safety and Health Act (OSHA) was created for :
(A) Reducing hazards
(B) Insurance
(C) Ecological development
(D) EIA analysis

No comments:

Post a Comment