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NAT I Medical Chemistry MCQs With Answers
Question # 1
Red lead is
Choose an answer
PbO
Pb
3
O
4
Pb
O
2
Pb
4
O
3
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Question # 2
Which of the following alkali metal hydroxides is the strongest base?
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LiOH
NaOH
KOH
CaOH
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Question # 3
When sulphur is boiled with Na
2
SO
3
solution the compound formed is
Choose an answer
Sodium sulphides
Sodium sulphates
Sodium persulphate
Sodium thiosulphate
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Question # 4
Mark the smallest atom
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F
CI
Br
I
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Question # 5
Most common reactions of benzene and its derivatives are
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Electrophilic addition reactions
Electrophilic substitution reactions.
Nucleophilic addition reactions
Nucleophilic substitution reactions
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Question # 6
A chemical reaction A B is said to be in equilibrium when
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Complete conversion of A to B has taken place
Conversion of A to B is only 50% complete
Only 10% conversion of A to B has taken place
The rate of transformation of A to B is just equal to rate of transformation of B to A in the system
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Question # 7
Which is the most amphoteric?
Choose an answer
Na
2
O
MgO
AI
2
O
3
CaO
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Question # 8
Which of the following substances is used as an antiknock compound?
Choose an answer
Tetraethyl lead
Lead tetrachloride
Lead acetate
Ethyl acetate
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Question # 9
When KCIO
3
is heated it decomposes into KCI and O
2
if some MnO
2
is added the reaction goes much faster because
Choose an answer
MnO
2
decomposes to give O
2
MnO
2
provides heat by reacting
Better contact is provided by MnO
2
MnO
2
acts as a catalyst
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