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01. 2-Phenyl-2-propene on acetic
hydration gives
a) 2-phenyl-2-propanol
b) 2-phenyl-1-propanol
c) 3-phenyl-2-propanol d) 1-phenyl-2-propanol
Ans:a
02.
is rotated anticlockwise about bond. The resulting conformer is
a) Partially eclipsed
b) Eclipsed
c) Gauche
d) Staggered
Ans:c
The resulting conformer is a Gauche
conform
03. Benzamide on treatment with gives
a) Aniline b) Benzonitrile
c) Chlorobenzene d) Benzyl amine
Ans:b
is dehydrating agent
04. The methods chiefly used the extortion
on Lead & Tin from their ores are respectively
a) Self reduction & carbon reduction
b) Self reduction & electrolytic reduction
c) Carbon reduction & self reduction
d) Cyanide process & carbon reduction
Ans:a Fractual
05.  Product on monobromin ation of this
compounds.
a)
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b)
c)
d)
Ans: b. The ring with maximum electron
density will be substituted by an electrophile
The ring attached with NH- will have
rich electron density due to resonance. As otho position is blocked, the electrophile
attacks the para position
06. The order or reactivity of phenyl
Magnesium Bromide with following compounds i) ii)
iii)
a) ii > iii > i b) i > iii > ii
c) ii > i> iii
d) All react with the same rate
Ans:c.
Nucleophile attacks the most
electrophile site first. Among aldehyde and a ketone, aldehydes are more electrophilic as in ketones the charge an carbonyl carbon is decreased by effect of both alkyl groups
More over in the tetrahedral intermediate aldehydes have less steric repulsion
than ketone and aldehydes increases the -ve charge on oxygen less in comparison
to ketones
Based on the above the order of reactivity
is
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