Haloalkanes And Haloarenes Test

Result

Haloalkanes And Haloarenes Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

Alkyl halides, on treatment with a suspension of Ag₂O (dry), give

A
alkanals

B
alkanols

C
alkanes

D
alkoxy alkanes

Solution

With dry Ag₂O, alkyl halides give alkoxy alkanes.
RX + Ag₂O (dry) → ROR + 2AgX

For example:
2C₂H₅Cl + Ag₂O → C₂H₅OC₂H₅ + 2AgCl

It will give alcohol with moist Ag₂O.
C₂H₅Cl + AgOH → C₂H₅OH + AgCl
Question 2
1 / -0

Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl halides due to

A
+I effect

B
longer carbon-halogen bond

C
resonance stabilisation and sp² hybridised carbon attached to the halogen

D
All of the above

Solution

Aryl halides are less reactive towards nucleophilic substitution reactions as compared to alkyl halides due to resonance stabilisation and sp2 hybridised carbon attached to the halogen. Due to resonance, there is partial double bond character in C-X bond, so C-X bond length in haloarene is smaller than C-X bond length in alkyl halide.
Question 3
1 / -0

Which of the following is correct?

A
Reduction of any aldehyde gives secondary alcohol.

B
Reaction of vegetable oil with H₂SO₄ gives glycerine.

C
Alcoholic iodine with NaOH gives iodoform.

D
Sucrose on reaction with NaCl gives invert sugar.

Solution

Alcoholic iodine with NaOH gives iodoform.