J.SURESHKUMAR
ENGINEERING CHEMISTRY
ECE-B
ADITYA INSTITUTE OF TECHNOLOGY AND MANAGEMENT, TEKKALI
(AN AUTONOMOUS INSTITUTE) 2013-14
Multiple Choice Questions for 1st B.Tech Unit-IV & V
Subject: ENGINEERING CHEMISTRY
Branch: E.C.E-B
1. Solar constant is
[
c
a. 140 Wm-2
b. 1.4 Wm-2
c. 1.4 kWm-2
d. 1.4 MWm-2
2. The radiation in the sunlight that gives us the feeling of hotness is
[
b
a. Visible
b. Infer-red
c. Red
d. Ultra-violet
3. Which of the following in not a bio-mass source?
[
d
a. Gobar gas
b. Coal
c. Wood
d. Nuclear energy
4. The energy which is not derived from the sun is
[ c
a. Bio-mass
b. Fossil fuels
c. Nuclear energy
d. Geo-thermal energy
5. Harmful radiation emitted by the sun is
[ c
a. Visible
b. Infra-red
c. Ultra-violet
d. Radio waves
6. A substance which produces a lot of heat on burning is called
[
d
a. oxidizing agent
b. biomass
c. biogas
d. fuel
7. fuel formed under the earth’s surface by the decomposition of organic matter is called [ c
a. organic fuel
b. biogas
c. fossil fuel
d. underground fuel
8. which of the following causes the least pollution when burnt
[ d
a. petrol
b. diesel
c. coal
d. natural gas
9. the main constituent of LPG is
[
b
a. methane
]
]
]
]
]
]
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]
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10.
11.
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ENGINEERING CHEMISTRY
b. butane
c. hydrogen
d. propane
the main constituent of CNG is
a. methane
b. butane
c. ethane
d. propane
Which of these is not a renewable source of energy?
a. The sun
b. Natural gas
c. Wind
d. Ocean tidal energy
The radiations absorbed by ozone layer are
a. infra-red
b. ultra-violet
c. visible
d. gamma rays
The radiations emitted by a hot furnace are
a. ultra-violet
b. infra-red
c. X- rays
d. Micro waves
The radiations emitted by the sun and responsible for the cause of skin cancer are
a. Infra –red
b. X-rays
c. Micro waves
d. Ultra – violet
A solar cell is made up of
a. Silicon
b. Titanium
c. Magnesium
d. Teflon
Which of the following is not combustible?
a. Oxygen
b. Hydrogen
c. Butane
d. Methane
In a solar panel, the metal used is
a. Gold
b. Copper
c. Silver
d. Nickel
A solar cell converts
a. heat energy into electrical energy
b. solar energy into electrical energy
c. heat energy into light energy
ECE-B
[
a
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[
b ]
[
b
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[
b
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[
d
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[
a
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[
a
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[
c
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[
b ]
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ENGINEERING CHEMISTRY
d. solar energy into light energy
19. The source of energy of the sun is
a. Nuclear fission
b. Chemical reaction
c. Nuclear fusion
d. Photoelectric effect
20. The process of splitting bigger hydrocarbons into smaller hydrocarbons is called
a. Pyrolysis
b. Cracking
c. Thermal decomposition
d. Combustion
21. Isooctane has an octane rating of
a. 0
b. 50
c. 100
d. Above 100
22. Which of the following posses zero octane number
a. 2-methyl naphthalene
b. octane
c. Cetane
d. n-heptan
23. suitability of diesel fuel is determined by
a. octane rating
b. Cetane rating
c. % carbon
d. Length of carbon chain
24. For good performance, the hydrocarbon molecules in a diesel fuel should be
a. Branched chained
b. Straight chained
c. Naphthalene
d. Aromatics
25. The cetane number of hexadecane is
a. 100
b. 0
c. 50
d. 10
26. Bergius process of synthetic petrol involves mainly
a. Passing water gas over heated coke under pressure
b. Catalytic hydrogenation of coal
c. Heating coal alone under pressure
d. Cracking of heavy oil
27. Out the following fractions of petroleum, the fractions have lowest boiling point.
a. Kerosene oil
b. Diesel oil
c. Heavy oil
d. Gasoline
28. Fuel suitable for motor engines
a. Kerosene oil
ECE-B
[
d ]
[
b ]
[
c
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[
d
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[
b
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[
b
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[
a
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[
b
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[
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[
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ENGINEERING CHEMISTRY
b. Diesel oil
c. Gasoline
d. Heavy oil
Petroleum is formed below earth crust by chemical changes in
a. Inorganic mater
b. Vegetable mater
c. Animal mater
d. Both b and c
When petroleum is heated gradually, the first batch vapors evolved will be rich in
a. Kerosene oil
b. Petroleum ether
c. Diesel oil
d. Lubricating oil
Catalytic cracking of heavy oil is carried out to get better quality
a. Gasoline
b. Kerosene oil
c. Diesel oil
d. Lubricating oil
For improving anti-knocking property of petrol, it is mixed with
a. Lead bromide
b. Tetra methyl lead
c. Tetra ethyl lead
d. Both b and c
A lubricant should possess high
a. Volatility
b. Oiliness
c. Acidity
d. None of the above
A single most important property of lubricating oil is
a. Fire point
b. Cloud point
c. Oiliness
d. Viscosity index
A good lubricant have
a. Low viscosity index
b. High viscosity index
c. Low fire point
d. High volatility
Oiliness is least in case of
a. Grease
b. Mineral oil
c. Animal oil
d. Vegetable oil
Animal and vegetable oils are
a. Very cheap
b. Not oxidized easily
c. Good in oiliness
d. Both b and c
ECE-B
[
d
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[
b
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[
a
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[
d
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[
b
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[
c
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[ b
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[
b
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[
c
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J.SURESHKUMAR
ENGINEERING CHEMISTRY
38. When graphite is dispersed in oil is called
a. Water dag
b. Grease
c. Oil dag
d. Blended oil
39. When graphite is dispersed in water is called
a. Water dag
b. Grease
c. Oil dag
d. Blended oil
40. CNTs are prepared by one of the following methods
a. Arc discharge
b. Laser ablation
c. CVD
d. all the above
41. the prefix “nano” comes from
a. fernch word meaning billion
b. greek word meaning dwarf
c. Spanish word meaning particle
d. Latin word meaning invisible
42. Who first used the term nanotechnology and when?
a. Richard Feynman, 1959
b. Norio Taniguchi, 1974
c. Eric Drexler, 1986
d. Sumio Iijima, 1991
43. What is a buckyball?
44.
45.
46.
47.
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[
c
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[
a
]
[
d
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[
b
]
[
a ]
[
a ]
a. A carbon molecule (C60)
b. Nickname for Mercedes-Benz's futuristic concept car (C111)
c. Plastic explosives nanoparticle (C4)
d. Concrete nanoparticle with a compressive strength of 20 nanonewtons (C20)
Which of these historical works of art contain nanotechnology?
[ d
]
a. Lycurgus cup
b. Medieval stained glass windows in churches
c. Damascus steel swords
d. All of the above
Richard Feynman is often credited with predicting the potential of nanotechnology. What was the title of his famous
speech given on December 29, 1959?
[
d ]
a. There is a tiny room at the bottom
b. Things get nanoscopic at the bottom
c. Bottom? What bottom?
d. There is plenty of room at the bottom
How many oxygen atoms lined up in a row would fit in a one nanometer space?
[
c
]
a. None
b. One
c. Seven
d. Seventy
Which one of these statements is NOT true?
[
c
]
a. Gold at the nanoscale is red
b. Copper at the nanoscale is transparent
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J.SURESHKUMAR
48.
49.
ENGINEERING CHEMISTRY
ECE-B
c. Silicon at the nanoscale is an insulator
d. Aluminum at the nanoscale is highly combustible
Which of these consumer products is already being made using nanotechnology methods?
[
d ]
a. Fishing lure
b. Golf ball
c. Sunscreen lotion
d. All of the above
If you were to shrink yourself down until you were only a nanometer tall, how thick would a sheet of paper appear to you?
[
d
]
a. 170 meters
b. 1.7 kilometers (a bit more than a mile)
c. 17 kilometers
d. 170 kilometers
50. Large forbidden gap is present in
a. Conductors
(B) Insulators (C) Semiconductors
(D) None of these
51. Nano materials can be studied by using
a. Optical microscope
b. Electron microscope
c. Scanning probe microscope
d. All
52. CVD processes were
a. Lower power input
b. lows temperature range
c. High purity d. All
53. During sliding friction, the following process can happen
a. Ploughing
b. Interlocking
c. Welded junctions
d. All the above
54. Good example of fluid film lubrication is
a. Hydrocarbon oil
b. Mixture of coconut oil and kerosene
c. Graphite
d. Molybdenum sulphide
55. Good example of extreme pressure lubrication is
a. Lubricants with organic sulphur or chlorine, phosphorous
b. Petroleum crude oil
c. Graphite
d. All the above
56. The lubricant used in boundary lubrication is
a. Graphite
b. Molybdenum sulphide
c. Graphite or molybdenum sulphide in oil suspension
d. All are applicable
57. A good lubricant should possess
a. Low volatility
b. Low carbon residue
c. Low steam emulsion number
d. All the above
58. A good lubricant should possess
[
b
]
[
d
]
[
d
]
[
d ]
[
a
]
[
a
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[
d
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[
d
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[
d
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ENGINEERING CHEMISTRY
a. High corrosion stability
b. High fire and flash points
c. High viscosity index
d. All are applicable
Grease is made of
a. Dispersion of soap in lubricating oil
b. Mixing two lubrication oils
c. Mixing of lime and lubrication oil
d. Mixing of graphite and lubrication oil
Iso-octane is otherwise chemically known as
a. 2,2, 3 – tri methyl pentane
b. 2,2, 4 – tri methyl pentane
c. 2,2, 3 – tri methyl pentane
d. 2,3, 3, – tri methyl pentane
cetane is chemically known as
a. 2 – ethyl naphthalene
b. 2- methyl naphthalene
c. 2,2,4 – tri methyl pentane
d. n-hexadecane
the one of the catalyst used in Bergius process is
a. calcium carbide
b. finely powdered nickel
c. nickel oleate
d. nickel oxalate
the removal of sulphur compounds
a. refining of petroleum
b. sweetening process
c. doctors process
d. all the above
the tools of green chemistry are
a. green starting materials
b. green relations
c. green chemical products
d. All of these.
Green chemistry is called
a. Sustainable chemistry
b. Unsustainable chemistry
c. Developing chemistry
d. Conceptual chemistry
ECE-B
[
a
]
[
b
]
[
d ]
[
c ]
[
d ]
[
d
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[
a
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J.SURESHKUMAR
ENGINEERING CHEMISTRY
ECE-B
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