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NAT II Physical Science Chemistry MCQs With Answers
Question # 1
Which of the following reaction is used for detecting presence of carbonyl group?
Choose an answer
Reaction with hydroxylamine
Reaction with hydrazine
Reaction with phenyl hydrazine
All
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Question # 2
A clathrate may be defined as a
Choose an answer
Cage compound
Liquid crystal
Mixture
Solid solution
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Question # 3
How many kinds of space lattices are possible in a crystal?
Choose an answer
23
7
230
14
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Question # 4
Which of the following statements is most appropriate about effective nuclear charge? It depends upon
Choose an answer
The shielding constant
The atomic number
The charge on the nucleus
Both the nuclear charge and the shielding
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Question # 5
The mass of the neutron is of the order of
Choose an answer
10
-23
kg
10
-24
kg
10
-26
kg
10
-27
kg
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Question # 6
Wholer prepared urea from
Choose an answer
Ammonia
NH
4
CNO
NH
3
Uric acid
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Question # 7
Which reaction sequence would be best to prepare 3-chloro-aniline from benzene?
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Chlorination, nitration, reduction
Nitration, Chlorination, reduction
Nitration, reduction, chlorination
Nitration, reduction, acylation, chorination, hydrolysis
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Question # 8
The most reactive compound for electrophilic nitration will be
Choose an answer
Benzyl chloride
Benzoic acid
Nitrobenzene
Chlorobenzene
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Question # 9
Saturated solution of NaCl on heating becomes
Choose an answer
Super saturated
Unsaturated
Remains saturated
None
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Question # 10
Which of the following has greatest tendency to lose electron?
Choose an answer
F
Fr
S
Be
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Question # 11
Phenol is heated with CCl
4
and alkaline KOH when salicylic acid is produced. The reaction is known as
Choose an answer
Frledel-Craft reaction
Riemer-Tiemann's reaction
Rosenmund's reaction
Sommelet reaction
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Question # 12
In crystal structure of sodium chloride, the arrangement of CI
-
ions is
Choose an answer
Fcc
Both Fcc and bcc
Bcc
None of these
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Question # 13
Which of the following geometry is associated with the compound in which the central atom assumes sp
3
d hybridization?
Choose an answer
Planar
Pyramidal
Angular
Trigonal bipyramidal
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Question # 14
Rusting of iron is catalysed by
Choose an answer
Fe
O
2
Zn
H
+
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Question # 15
On heating acetaldehyde with ammonical silver nitrate solution, we get
Choose an answer
CH
3
OH
Silver acetate
HCHO
Silver mirror
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Question # 16
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 # 17
Phosphorus pentoxide finds use as
Choose an answer
An oxidizing agent
A reducing agent
a bleaching agent
A dehydration agent.
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Question # 18
Which is true for an element R present in group 13 of the periodic table?
Choose an answer
It is a gas at room temperature
It has oxidation state of +4
It forms R
2
O
3
It forms RX
2
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Question # 19
Alum is not used
Choose an answer
As a mordant in dyeing
As an insecticide
In purification of water
In tanning of leather
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Question # 20
The rate of a reaction that does not involves gases, does not depend upon
Choose an answer
Pressure
Temperature
Concentration
Catalyst
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Question # 21
The vapour density of a gas is 11.2. The volume occupied by 11.2 g of this gas at N.T.P. is
Choose an answer
22.4 litres
11.2 litres
1 litre
2.24 litres
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