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NAT II Physical Science Chemistry MCQs With Answers
Question # 1
Which of the following elements is most electronegative?
Choose an answer
Oxygen
Chlorine
Nitrogen
Fuorine
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Question # 2
BiCl
3
on hydrolysis forms a white precipitate of
Choose an answer
Bismuthio acid
Bismuth oxychloride
Bismuth pentachloride
Bismuth hydroxide.
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Question # 3
The dimension of rate constant of second order reaction involves
Choose an answer
Neither time nor concentration
Only time
Time and concentration
Time and square of concentration
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Question # 4
Which of the following is directly related to Qualitative analysis?
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Identification
Separation
Measurement
Calculation
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Question # 5
The IUPAC name of the compound having the formula (CH
3
)
3
C - CH = CH
2
is
Choose an answer
1, 1-Dimethyl-3-butene
1, 1, 1-Trimethyl-3-propene
3, 3,-Dimethyl-1-butene
3, 3, 3,-Trimethyl-1-propene
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Question # 6
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 # 7
Detergents are
Choose an answer
Synthetic products
Natural products
Both A and B
None of the above
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Question # 8
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 # 9
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 # 10
Which one of the following elements occurs free in nature?
Choose an answer
N
P
As
Sb
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Question # 11
Each of following is true of white and red phosphours except that they
Choose an answer
Are both soluble in CS
2
Can be oxidized by heating in air
Consist of the same kind of atoms
Can be converted into one another
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Question # 12
The chemical composition of white lead is
Choose an answer
Na
2
CO
3
Pb
3
O
4
Pb(OH)
2
.2PbCO
3
PbO
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Question # 13
Portland cement is manufactured by using
Choose an answer
Limestone, clay and sand
Limestone, gypsum and sand
Limestone, gypsum and alumina
Limestone, clay and gypsum
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Question # 14
Which species represents the electrpohile in aromatic nitrotaion?
Choose an answer
NO
-
2
NO
+
2
NO2
NO
-
3
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Question # 15
Dolomite has the composition
Choose an answer
KCL.MgCL
2
.6H
2
O
Na
3
AIF
6
CaCO
3
.MgCO
3
CaCL
2
.MgCl
2.
6H
2
O
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Question # 16
The addition of HBr is easiest with
Choose an answer
CH2 = CHCl
CICH = CHCl
CH3 - CH = CH2
(CH3)2 C = CH2
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