Engineering Chemistry Quiz | Engineering Chemistry Multiple Choice Questions and Answers

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Questions
1 Ethanol is used as,
A Polymeric thickener
B Polymer
C Polymeric thinner
D None of above

Answer: Polymeric thickener
2 Calcium soap base grease is also called as,
A Soap grease
B Greases
C Axle grease
D Cup grease

Answer: Cup grease
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3 Antiwear additive in extreme pressure additive is,
A Soapstone
B Tricresyl phosphate
C Mica
D Graphite

Answer: Tricresyl phosphate
4 Graphite is ....lubricant.
A Solid
B Liquid
C Semi solid
D None of above

Answer: Solid
5 Identify the odd type of lubricant from following,
A Semi solid
B Liquid
C Gaseous
D Solid

Answer: Gaseous
6 Identify liquid lubricant from the following,
A Graphite
B Lubricating oil
C Mo Disulphide
D Soapstone

Answer: Lubricating oil
7 Viscosity index can be defined as,
A (L-U / L-H) X 100
B (L+U / L-H) X 100
C (L-H / L-U) X 100
D (L-H / L+U) X 100

Answer: (L-U / L-H) X 100
8 Which of the following metal does not resists the corrosion process?
A Ni
B Cu
C Pb
D Fe

Answer: Fe
9 Standard electrode potential of Fe2+/Fe is,
A + 0.44 V
B - 0.44 V
C + 1.44 V
D - 1.44 V

Answer: - 0.44 V
10 Which of the following gases accelerates rusting of iron?
A CO2
B SO2
C NO2
D All of above

Answer: All of above
11 Standard electrode potential of Zn2+/ Zn is,
A - 0.76 V
B + 0.76 V
C - 2.76 V
D + 2.76 V

Answer: - 0.76 V
12 Standard electrode potential of Al / Al3+ is,
A + 0.66V
B - 0.66 V
C - 1.66 V
D + 1.66 V

Answer: - 1.66 V
13 Standard electrode potential of hydrogen is,
A 1.00 V
B 0.00 V
C 0.01 V
D None of above

Answer: 0.00 V
14 Process of corrosion enhanced by,
A AIR & Moisture
B Electrolytes in water
C Metallic impurities
D All of above

Answer: All of above
15 Smaller the grain size, corrosion is,
A Greater
B Lower
C Constant
D Doesn’t affected

Answer: Greater
16 Which of following metals could provide cathodic protection to Fe?
A Al & Cu
B Al & Zn
C Zn & Cu
D Al & Ni

Answer: Al & Zn
17 Chemical formula of Rust is,
A Fe2O3
B FeO
C Fe3O4
D Fe2O3.XH2O

Answer: Fe2O3.XH2O
18 Electrochemical corrosion takes place on,
A Anodic area
B Near cathode
C Cathodic area
D Near anode

Answer: Anodic area
19 Lower is PH, corrosion is,
A Greater
B Constant
C Lower
D None of above

Answer: Greater
20 Volatile oxidation corrosion product of a metal is,
A Fe2O3
B MoO3
C Fe3O4
D FeO

Answer: MoO3

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