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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Molar mass of high molecular w.f. polymers ranges from:
Choose an answer
1000 to 10000
10000 to 100000
100000 to 1000000
1000 to 1000000
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Question # 2
Which is an intermediate in SN1 reaction
Choose an answer
Ethoxide ion
Carbocation
alkyl halide
alkene
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Question # 3
Which of following factor affect vapour pressure of a liquid?
Choose an answer
temperature
inter molecules forces
size of the molecules
all of these
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Question # 4
Which of the following is a molecular formula of vinyl acetate
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C
4
H
6
O
2
C
2
H
4
O
2
C
4
H
6
O
3
None of these
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Question # 5
Bond will be covalent when electronegativity difference of bonded atom is
Choose an answer
Equal to 1.7
between 0.5 to l.7
Greater to 1.7
zero
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Question # 6
Glucose is converted into ethanol by the enzyme present in the yeast
Choose an answer
Urease
Zymase
Invertase
Sucrase
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Question # 7
Primary pollutant is that:
Choose an answer
Waste product of an industry
Which causes cancer
Whose concentration cannot be controlled
Which corrode the metal only
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Question # 8
The radioactive disintegration of 238U92 is
Choose an answer
First order
Second order
Third order
Zero order
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Question # 9
Water is purified by the process:
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Aeration
Coagulation
Chlorination
All of these
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Question # 10
Which of the following is not a postulate of the kinetic theory of gases?
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when gas particles collide, their total kinetic energy increases
gases consist of molecules in a constant state of random motion
when gas particles collide their total kinetic energy does not change at all
The gas particles travel in straight lines unit they collide with one another or with the walls of the container
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Question # 11
A single chlorine free radical can destory how many ozone molecules
Choose an answer
10
100
1000
10000
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Question # 12
Oxidation of ter-alcohol gives:
Choose an answer
Aldehyde
Formaldehyde
Ketone
Alkens
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Question # 13
In sp
2
hybridization bond angle is _____
Choose an answer
120°
180°
109.5°
None
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Question # 14
When quantity of electricity passed is one faraday then the mass deposited at the electrode is equal to
Choose an answer
One gm, atomic weight
One gm, Equivalent
Eletrochemical equivalent
None of the above
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Question # 15
Hemoglobin contains nearly:
Choose an answer
10,000 atoms
100 atoms
1000 atoms
1 atom
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Question # 16
At room temperature, the mole fraction of a solution in 0.25 and the vapour pressure of the solvent is 0.80 atm. Then the lowering of vapour pressure is
Choose an answer
0.75
0.512
0.80
0.0512
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Question # 17
A single free chlorine radical can destroy ozone molecules upto:
Choose an answer
100000
100
1000
10000
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Question # 18
The active part in a molecule is called
Choose an answer
Homologous series
Functional group
Chemical bonding
Ionic complex
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Question # 19
S-block elements consist of
Choose an answer
Alkali metals
Alkaline earth metals
Alkali and alkaline earth metals
None of these
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Question # 20
Rearrangement of an oxime to an amide in the presence of strong acid is called
Choose an answer
Curtius rearrangement
Fries rearrangement
Beckman rearrangement
Aldol condensation
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Question # 21
Oxidation of 2-propanol gives
Choose an answer
Propanone
Butanone
Pentanone
None of these
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Question # 22
Copolymer is
Choose an answer
Nylon-6
Nylon 66
PMMA
Polyethene
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