676.
A.
1
B.
2
C.
3
D.
4
E.
1 and 3
Correct answer is C
No explanation has been provided for this answer.
677.
A.
P and Q
B.
P and R
C.
P and S
D.
R and S
E.
Q and R
Correct answer is D
No explanation has been provided for this answer.
678.
The i.u.p.A.C name for the compound
A.
2-chloro-isopentane
B.
3-chloro-isopentane
C.
2-chloro-2-methylbutane
D.
1-chloro-2,2- dimethylpropane
E.
2-chloro-2-ethylpropane
Correct answer is C
No explanation has been provided for this answer.
679.
A.
10 g
B.
12 g
C.
14 g
D.
16 g
E.
18 g
Correct answer is D
At 80°C, we have 1000cm3=0.4mol/cm3
40°C = 0.3mol/cm3
hence, the loss in concentration = 0.1mol/cm3
= 0.1×160=16g
680.
A.
1-methlpentan
B.
3-methylbutane
C.
2-methylbutane
D.
1-dimethylpropane
E.
2-methylpentane
Correct answer is C
No explanation has been provided for this answer.
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