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NAT II Physical Science Chemistry MCQs With Answers
Question # 1
In a crystal a
≠
b
≠
c, a =
γ
= 90
° and
β
≠
90
°. It is
Choose an answer
Monoclinic
Rhombic
Trigonal
Tetragonal
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Question # 2
Acetic anhydride is obtained from acetyl chloride by the reaction of
Choose an answer
P
2
O
5
H
2
SO
4
CH
3
COONa
CH
3
COCH
3
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Question # 3
Aldehydes are produce in atmosphere by
Choose an answer
Oxidation of secondary alcohols
Reduction of alkenes
Reaction of oxygen atoms with hydrocarbons
Reaction of oxygen atoms with ozone.
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Question # 4
An endothermic reaction is one in which the reacting substances
Choose an answer
Have more energy than the products
Have less energy than the products
Have the same energy as the products
Are at a higher temperature than the products.
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Question # 5
Maximum number of active hydrogens
Choose an answer
Acetic acid
Glycerol
Methane
Methanol
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Question # 6
The number of atoms in 0.004 g of magnesium is close to
Choose an answer
24
2 x 10
20
10
20
6.02 x 10
23
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Question # 7
Which of the following pairs are chemically dissimilar?
Choose an answer
Na and K
Ba and Sr
Zr and Hf
Ca and Zn
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Question # 8
Which of the following belongs to the halogen family?
Choose an answer
Francium
Polonium
Radium
Astatine
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Question # 9
Which one is not usually used for the crystallization?
Choose an answer
Acetone
Acetic acid
Sulphuric acid
Chloroform
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Question # 10
Which one is the property of an ideal solvent?
Choose an answer
Should be expensive
It should react chemically with the solute
Impurities should crystallize along with the solute
Should be safe to use
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Question # 11
Carbon monoxide is pollutant as it
Choose an answer
Inactivates nerves
Inhibits glycolysis
Combines with oxygen
Combines with hemoglobin
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Question # 12
Which of the following nitrogen fertilizer contain more nitrogen
Choose an answer
NaNO
3
KNO
3
NH
4
NO
3
Urea
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Question # 13
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 # 14
Potassium is kept in
Choose an answer
Water
Ammonia
Alcohol
Kerosene.
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Question # 15
ΔH
neutralisation
is always
Choose an answer
positive
Negative
Zero
Positive or negative
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Question # 16
Detergents are
Choose an answer
Synthetic products
Natural products
Both A and B
None of the above
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