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NAT II Physical Science Chemistry MCQs With Answers
Question # 1
The molal elevation constant is the ratio of the elevation in boiling point to
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Mojarity
Molality
Mole fraction of solute
Mole fraction of solvent
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Question # 2
When quantity of electricity passed is one faraday then the mass deposited at the electrode is equal to
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One gm. atomic weight
One gm. equivalent weight
Electrochemical equivalent
None of the above
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Question # 3
Inert pair effect plays an important role in case of
Choose an answer
F
Al
Si
Tl
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Question # 4
Acetylene gives
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White ppt. with ammonical AgNO
3
and red ppt. with ammonical Cu(NO
3
)
2
White ppt. with ammonical AgNo
3 and red ppt. with ammonical
Cu
2
Cl
2
White ppt. with both
Red ppt. with both
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Question # 5
The most reactive compound for electrophilic nitration will be
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Benzyl chloride
Benzoic acid
Nitrobenzene
Chlorobenzene
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Question # 6
The credit of discovering neutron goes to
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Rutherford
Langmuir
Chadwick
Austen
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Question # 7
Among the alkaline earth metals the element forming predominantly covalent compounds is
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Be
Mg
Sr
Calcium
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Question # 8
The number of unpaired electrons in the p-subshell of oxygen atom
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1
2
3
4
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Question # 9
Which of the following reaction is used for detecting presence of carbonyl group?
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Reaction with hydroxylamine
Reaction with hydrazine
Reaction with phenyl hydrazine
All
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Question # 10
By using the fluted filter paper rate of filtration is
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Increased
Decreased
Filtration is constant
Having no effect
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Question # 11
Dehydration of glycerol give
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Propane
Propene
Acrolein
Benzene
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Question # 12
Phosphide ion has the electronic structure similar to that of
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Nitride ion
Fluoride ion
Sodium ion
Chloride ion
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Question # 13
Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh
4
or LiAH
4
?
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1-Propanol
2-Propanol
2-Methyl2-Proponal
Ethanol.
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Question # 14
Ammonia gas used directly as a fertilizer is injected into the soil at a depth of about
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Two inches
Three inches
Five inches
Six inches
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Question # 15
In which of the following elements +1 oxidation state is more stable than +3
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B
Al
ga
Ti
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Question # 16
Octane number is zero for
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n-Heptane
Isooctane
n-Hexane
Isoheptane
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