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Chemistry General Science Test Hard Mode MCQs With Answers
Question # 1
Which metal is protected by a layer of its own oxide?
Choose an answer
AI
Ag
Au
Fe
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Question # 2
For the carbylamine reaction we need hot alc.KOH and
Choose an answer
Any amin and chloroform
Chloroform and Ag powder
A primary amine and chloroform
A mono alkyl amine and trichlorom-ethane
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Question # 3
The symbol of the element whose atoms have the outer most electronic configuration 2s
2
2p
3
is
Choose an answer
N
Li
P
Na
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Question # 4
Which of the following is not present in RNA?
Choose an answer
Uracil
Thymine
Ribose
Phosphate
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Question # 5
The equilibrium constant in a reversible chemical reaction at a given temperature
Choose an answer
Depends on the initial concentration of the reactants
Depends on the concentration of one of the products at equilibrium
Does not depend on the initial concentrations of recatants
Is not characteristic of the reaction
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Question # 6
Which of the following is a molecular disease?
Choose an answer
Allergy
Cancer
German measles
Sickle cell anemia
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Question # 7
Which of the following belongs to the halogen family?
Choose an answer
Francium
Polonium
Radium
Astatine
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Question # 8
What quantity of limestone (CaCO
3
) on heating will give 56 kg of CaO?
Choose an answer
1000 kg
56 kg
44 kg
100kg
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Question # 9
Hydrogen chloride molecule contains
Choose an answer
Covalent bond
Double bond
Co-ordinate bond
Electrovalent bond
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Question # 10
Which of the following with aqueous KOH will give acetaldehyde?
Choose an answer
1,2-Dichloroethane
1, 1-Dichloroethane
Chloroacetic acid
Ethyl chloride
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Question # 11
In which molecule carbon atom is sp
2
hybridized
Choose an answer
CH
4
C
2
H
4
C
2
H
2
None of the above
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Question # 12
In which molecule carbon atom is sp
2
hybridized
Choose an answer
CH
4
C2H
4
C
2
H
2
None of the above
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Question # 13
How many moles of Helium gas occupy 22.4 L at 0°C at a atm. Pressure?
Choose an answer
0.11
0.90
1.0
1.11
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Question # 14
Most common reactions of benzene and its derivatives are
Choose an answer
Electrophilic addition reactions
Electrophilic subsitution reactions
Nucleoophilic addition reactions
Nucleophilic substitution reactions
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Question # 15
Carbon atom holding halogen in aryl halides is
Choose an answer
sp
2
-hybridesed
sp
3
-hybridesed
sp-hybridesed
sp
3
d-hybridesed
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Question # 16
The most reactive compound for electrophilic nitration will be
Choose an answer
Benzyl chloride
Benzoic acid
Nitrobenzene
Chlorobenzene
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Question # 17
When electrons revolve in stationary orbits,
Choose an answer
There is no change in energy level
They vecome stationary
They are gaining kinetic energy
There is increase in energy
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Question # 18
Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?
Choose an answer
Chlorination, nitration, reduction
Nitration, Chlorination, reduction
Nitration, reduction, chlorination
Nitration, reduction, acylation, chorination, hydrolysis
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Question # 19
Toluene can be oxidized to benzoic acid by
Choose an answer
KMnO
4
(alk)
K
2
Cr
2
O
7
(acidic)
Both
None
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Question # 20
If a salt bridge is removed electrode is made from which of the following?
Choose an answer
ZnCl
2
CuSO
4
Hg
2
Cl
2
HgCl
2
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Question # 21
The main structure features of proteins is
Choose an answer
An ester linkage
An ether linkage
The peptide linkage
All
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Question # 22
Benezene is obtained by fractional distillation of
Choose an answer
Heavy oil
Anthracene oil
Middle oil
Light oil
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