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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
C
6
H
12
O
6
is molecular formula of:
Choose an answer
Glucose
Dextrose
Fructose
All of these
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Question # 2
Which one of the following is a powerful electrophile used to attack on the electrons of benzene ring?
Choose an answer
FeCl2
Cl+
FeCl-4
Cl2
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Question # 3
It is a biodegradable pollutant
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Salts of HG
DDt
Aluminum foil
Domestic fuel
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Question # 4
The attracted forces which are created due to repulsion of electronic cloud of the molecules are:
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ion-dipole forces
dipole-dipole forces
dipoles-induced dipole forces
instantaneous dipole-induced dipole
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Question # 5
Which of the following element has high m.p and b.p, it acts as a reducing agent, and can react with bases?
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Sr
Ca
Be
Mg
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Question # 6
The conversion of tertiary alcohols into alkenes in the presence of K2Cr2O7 + H2SO4 is
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Addition reaction
C-H bond cleavage
Elimination reaction
Combustion reaction
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Question # 7
Glass is a
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Micro-crystalline solid
Super-cooled liquid
Gel
Polymeric mixture
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Question # 8
Peroxyacetylnitrate (PAN) is an irritant to human beings and it affects:
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Eyes
Ears
Stomach
Nose
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Question # 9
Which one of the following organic acids is made form methanol?
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acetic acid
bothanic acid
formic acid
propanoic acid
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Question # 10
Which one of the following will behave least like an ideal gas at high temperature and low pressure?
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hydrogen fluoride
helium
oxygen
carbon dioxide
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Question # 11
If absolute temperature of a gas is doubled and pressure is reduced to one half, then the volume of the gas will
Choose an answer
remains unchanged
increases unchanged
reduces to 1/4
increases 4 times
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Question # 12
Water shows maximum density at
Choose an answer
4°C
0°C
100°C
-4°C
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Question # 13
Ketones are reduced to
Choose an answer
Primary alcohol
Secondary alcohol
Tertiary alcohol
All of these
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Question # 14
A bond between two atoms may be obtained by sharing of electrons such a bond is called
Choose an answer
An ionic bond
A coordinate bond
A dative bond
A covalent bond
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Question # 15
Generally electron affinities for elements in a period from left to right
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Decreases
Increases
Remain same
Increases alternatively
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Question # 16
An alcohol with molecular formula C
n
H
2n+1
OH has a chiral carbon atom but does not react with MnO
-
4
/H
+
what is the least number of carbon atoms such an alcohol could possess
Choose an answer
5
6
7
8
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Question # 17
Aldehydes which do not have
α
-hydrogen undergo
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Aldol combination
Cannizzaro's reaction
Substitution
Elimination
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Question # 18
Oxidation of 2-propanol gives
Choose an answer
Propanone
Butanone
Pentanone
None of these
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Question # 19
In an ooctahedral crystal field splitting, the number of orbitals pushed down in energy is
Choose an answer
3
2
5
Zero
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Question # 20
Among the following elements which one has the highest value of first ionization potential?
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Oxygen
Argon
Barium
Cesium
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Question # 21
Hydrolysis of trichloromethane with aqueous KOH gives
Choose an answer
Potassium formate
Acetylene
Chloral
Methanol
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Question # 22
AgCl is soluble is
Choose an answer
Aqua regia
H
2
SO
4
HCl
NH
3
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