Engineering Chemistry Quiz | Engineering Chemistry Multiple Choice Questions with Answers

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Questions
61 Application of Kohlrausch law,
A Determination of ionic product of water
B Determination of degree of dissociation
C Determination of equivalent conductance of weak electrolyte
D All of above.

Answer: All of above.
62 Natural water contains..... mg / lit of dissolved oxygen.
A 4 - 6
B 1 - 2
C 8 - 10
D 15 – 20

Answer: 4 - 6
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63 .......is called as protective blanket of gases surrounding earth.
A Lithosphere
B Atmosphere
C Biosphere
D Hydrosphere

Answer: Atmosphere
64 Biosphere is very complex it is divided into smaller units called as_ .
A Biotic system
B Ecosystem
C Biosystem
D Ecology

Answer: Ecosystem
65 Temp. of thermosphere in environment is _
A -92 to 120 0C
B -92 to 1200 0C
C -92 to 1000 0C
D -92 to 2200 0C

Answer: -92 to 1200 0C
66 Mathematical statement of ohm's law is,
A I = E/R
B E = R/E
C E = I/R
D E =R/I

Answer: I = E/R
67 Flow of electricity through electrolytic solution is due to migration of _
A Electrons
B Ions
C Matter
D None of the above

Answer: Ions
68 Cell constant can be defined as _
A (Specific / Observed) Conductance
B (Observed / Specific) Conductance
C (1 / Specific) Conductance
D (1 / Observed) Conductance

Answer: (Specific / Observed) Conductance
69 The battery used in automobiles is _
A Lead accumulator
B Ni-metal hydride
C Li-MnO2
D Laclanche cell

Answer: Lead accumulator
70 Conductivity of 1cm3 of solution is _
A Equivalent
B Moral
C Molal
D Specific

Answer: Specific
71 In Lithium batteries, electrolytes can’t acts as aqueous solution because,
A High reactivity of Li with H2O
B Low density of Li w. r. t. H2O
C High electro positivity of Li+
D None of above

Answer: High reactivity of Li with H2O
72 In Li- MnO2 cell _ used as electrolytic solution
A LiO
B LiX in organic solvent
C LiX in inorganic solvent
D LiO in organic solvent

Answer: LiX in organic solvent
73 In Li- MnO2 cell _ acts as separator.
A Polyethene
B Polypropylene
C Polybutylene
D Polymeric Li

Answer: Polypropylene
74 In methanol - O2 fuel cell anode is Ni- sheet with _ as catalyst.
A Pt
B Pd
C Ag
D Au

Answer: Pd
75 Hydrogen in metal-hydride is used or acts as anode in _ battery
A Lithium Battery
B Lithium MnO2 cell
C Lead Accumulator
D Ni - metal Hydride battery

Answer: Ni - metal Hydride battery
76 Cell potential of Ni - Metal hydride battery is,
A 1.25 to 1.35 V
B 0.25 to 1.3 V
C 0.25 to 0.35 V
D 0.025 to 1.35 V

Answer: 1.25 to 1.35 V
77 London type of smog which contains SO2, SO3 and humidity is responsible for _ .
A Pollution
B Acid rain
C Global warming
D Ozone layer depletion

Answer: Acid rain
78 Fine ash from pulverized fuel (coal) burned in power station is known as _ .
A Coal ash
B Fly ash
C Pulverized ash
D Fuel ash

Answer: Fly ash
79 Conversion of Fe to Fe2+ is,
A Oxidation
B Reduction
C Corrosion
D None of above

Answer: Oxidation
80 DNA breakage, inhibition, alteration, replication and formation of DNA adduct arises due to,
A Acid rain
B Green house effect
C Global warming
D Ozone layer depletion

Answer: Ozone layer depletion

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