| Post Name | CHEMIST-FACTORIES AND BOILERS |
|---|---|
| Question Paper Code | 009/2020 |
| Date of Test | 4 February 2020 |
| Medium of Question | ENGLISH |
| Exam Type | OMR Examination |
| Total Questions | 100 |
1
Which of the following is a carbonate ore?
Answer
B. Siderite
2
Nitriding is the process of :
Answer
A. heating steel with ammonia
3
Which of the following is an acidic refractory material?
Answer
B. Silica
4
Addition of sodium dichromate to molten glass imparts _________ colour to glass.
Answer
A. Green
5
Cinnabar is ore of :
Answer
B. Hg
6
NPK value of a fertilizer denotes the nitrogen, phosphorous and potassium contents in terms
of _________ respectively.
Answer
A. Elementary nitrogen, P2O5, K2O
7
Alnico is an alloy of :
Answer
B. Fe, Co, Al ,Ni
8
Self-ionisation of liquid SO2 forms :
Answer
A. SO2+ and SO32ο
9
Which one is direct fertilizer?
Answer
D. Super phosphate
10
Chemical formula of triphosphazene is :
Answer
A. N3P3Cl6
11
Which type of glass is used for making lenses?
Answer
C. crooks glass
12
Cupellation is involved in the metallurgy of :
Answer
B. Ag
13
Clay belongs to :
Answer
D. sheet silicate
14
Identify the aprotic solvent :
Answer
B. CHCl3
15
In thermite process reducing agent employed is :
Answer
B. Aluminium
16
Which of the following is true for solutions showing dissociation?
Answer
B. Vant Hoff factor is greater than one
17
The heat of combustion of CH4(g), C(s) and H2(g) at 25Β°C are β212.4 kcal, β94.0 kcal and
β68.4 kcal respectively. Heat of formation of CH4 will be :
Answer
C. β 18.4 kcal
18
Osmotic pressure of equimolar solutions of sugar (I), AlCl3 (II) and BaCl2 (III) is in the
order of :
Answer
B. II > III > I
19
In cold countries ethylene glycol is added to water in radiators of automobiles during winter.
This is to :
Answer
B. lower the freezing point
20
If 50 ml of 2N HCl is mixed with 50 ml of 2M KOH ,the solution will be :
Answer
B. neutral
21
If the solubility of a salt Ag2SO4 is X mol/litre, then solubility product is :
Answer
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 :
Answer
C. 5.0
23
Purple of Cassius is :
Answer
B. colloidal solution of gold
24
Heat of neutralization of strong acid and strong base is :
Answer
A. β 57.1 KJ/mol
25
The relationship between molar specific heat at constant pressure C_p and at constant volume C_v is
Answer
C. C_p β C_v = R
26
Which of the following is true about the octane number of isooctane, n-butane and n-hexane?
Answer
B. isooctane > n-butane> n-hexane
27
First stage of coal formation is :
Answer
C. Peat
28
Which of the following is a secondary fuel?
Answer
A. coal gas
29
The reaction of isobutane and isobutene in presence of anhydrous HF at room temperature
yields :
Answer
A. isooctane
30
Sweetening of petroleum is the process of :
Answer
A. desulphurisation
31
The main components of natural gas is
Answer
B. methane and ethane
32
Which of the following cannot be purified by sublimation?
Answer
D. calcium chloride
009/2020 6 A
33
Sulphur containing amino acid is :
Answer
D. cysteine
34
_________ is a maximum boiling azeotrope.
Answer
B. 68% nitric acid and 32% water
35
Sesquiterpenoids contains _________ number of isoprene units.
Answer
C. 3
36
Alkaloid nicotine contains _________ nucleus.
Answer
A. pyridine
37
Major fattyacid present in coconut oil is :
Answer
D. lauric acid
38
Which one is not a drying agent?
Answer
D. calcium carbonate
39
Oil of rose contains :
Answer
B. geraniol
40
Vinca alkaloids are used as _________ drugs.
Answer
C. anticancer
41
A Molal solution is one that contains one mole of the solute in :
Answer
Question Cancelled
42
In the titration of K 2Cr2 O7 iodometrically, near the end point the colour of the solution
becomes :
Answer
A. green
43
The Indicator used in iodometric titration is :
Answer
D. Starch
44
In qualitative analysis cd is under :
Answer
B. II group
45
A mixture when rubbed with organic acid smells like vinegar. It contains :
Answer
D. acetate
46
Which of the following is a primary standard?
Answer
C. Na 2CO3
47
When NH4Cl is added to NH 4 OH solution the dissociation of ammonium hydroxide is
reduced :
Answer
A. common ion effect
48
The solubility product of BaSO4 is 1.5 ο΄ 10 ο9 at 18ο°C. Its solubility in water at 18ο°C is :
Answer
D. 3.9 ο΄ 10 ο5 moles litreβ1
49
The basis principle of paper chromatography is :
Answer
B. partition
50
Which parameter is measured in thermogravimetry?
Answer
B. change in mass
51
Amino acid composition of protein is determined by :
Answer
D. Ion-exchange chromatography
52
0.1 N solution of Na 2CO3 is being titrated with 0.1 N HCl, the best indicator to be used is :
Answer
C. Methyl orange
53
Which property is measured in absorption spectrophotometry?
Answer
B. Optical density of the solution
54
Calculate significant figures in 21.697 β 20.802 :
Answer
C. 3
55
Normality of 2 M H 2 SO4 is :
Answer
A. 4N
56
The reagent commonly used to determine hardness of water titrimetrically is :
Answer
A. Disodium salt of EDTA
57
What is the weighing form of gravimetric estimation of iron?
Answer
A. Fe 2 O3
58
Dimethyl Glyoxime is used for the test of ββββββ in alkaline medium.
Answer
D. Ni
A 9 009/2020
59
Scientific creativity originates from :
Answer
Question Cancelled
60
Nebulization is a term associated with :
Answer
C. atomic absorption spectroscopy
61
Ozone layer is present in :
Answer
B. stratosphere
62
Which air pollutant is not released by automobiles?
Answer
C. Fly ash
63
When huge amount of sewage is dumped in a river, the BOD will :
Answer
A. increase
64
Which of the following is the uppermost region of the atmosphere?
Answer
C. exosphere
65
Depletion of ozone layer causes :
Answer
C. skin cancer
66
In 1984, Bhopal gas tragedy took place because methyl isocyanate :
Answer
D. reacted with water
67
Which of the following is most abundant hydrocarbon pollutant?
Answer
C. methane
68
Which is true about DDT?
Answer
D. Non-Biodegradable pollutant
69
Sewage water is purified by :
Answer
B. micro organisms
70
The greatest affinity for haemoglobin is shown by which of the following?
Answer
A. NO
71
The polymer obtained from caprolactum is :
Answer
B. Nylon-6
72
Plexi glass is a polymer of :
Answer
A. Methyl methacrylate
73
Name a gas that causes Green house effect :
Answer
C. Carbon di oxide
74
Which one of the following is a hard detergent ?
Answer
B. Alkyl Benzene Sulphonate
75
Gun cotton is :
Answer
D. Cellulose Nitrate
76
Flavour of pineapple can be obtained by mixing the additive :
Answer
C. Ethyl Butyrate
77
Which one of the following is a naturally occurring dye ?
Answer
D. Indigo
78
The objective of ISO-9000 family of Quality management is :
Answer
C. Customer satisfaction
79
Soaps and detergents are :
Answer
A. Ionic Compounds
80
When is a detergent more useful for cleaning than soap?
Answer
C. Cleaning in hard water
81
Equanil is :
Answer
B. Tranquilizer
82
Polyethylene glycols are used in the preparation of which type of detergents?
Answer
C. Non- ionic detergents
83
Which of the following chemicals can be added for sweetening of food items at cooking
temperature and does not provide calories?
Answer
D. Sucralose
84
Which of the following is NOT one of the twelve principles of green chemistry?
Answer
C. Avoiding the use of catalysts
85
Green chemistry is also called as :
Answer
D. Sustainable Chemistry
86
_________ are greener than the conventional methods.
Answer
B. Micro waves
87
CβHβ + 1/2 Oβ β CβHβO (Ethylene oxide). This reaction will takes place under presence of catalyst. Find out the % atom economy:
Answer
A. 100%
88
The bio diesel is the long chain of carbon atoms contains _________ group at one end.
Answer
C. Ester
89
Gas related to Bhopal tragedy was :
Answer
C. Methyl Isocyanate
90
Which one of the following is not a condensation polymer?
Answer
B. Neoprene
91
Which of the following is a chain growth polymer?
Answer
A. Polystyrene
92
Presence of _________ in a dry gaseous fuel does not contribute to its calorific value.
Answer
C. Oxygen
93
Which of the following is not a permitted synthetic food colour?
Answer
B. Rhodamine B
94
The advantage of using conducting polymers in place of metals is their :
Answer
B. Light-weight
95
Laboratory gas is obtained by the cracking of :
Answer
D. Kerosene
96
Using Chromatogram as detector in Chromatography, a graph is obtained between _________
and time.
Answer
C. Concentration
97
In photometers, the readings of the specimen are initially obtained in the form of which of
the following parameters?
Answer
A. Transmittance
98
Which of the following organic compounds will have the highest intensity of response when
introduced in a flame ionization detector?
Answer
B. Butane
99
Which of the following hydrocarbon series are almost absent in crude petroleum?
Answer
D. Olefins
100
Occupational Safety and Health Act
Answer
A. Reducing hazards
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