1
MCQ (Single Correct Answer)

AIPMT 2006

The major organic product in the reaction is

CH3 $$-$$ O $$-$$ CH(CH3)2 + HI $$ \to $$ products
A
CH3I + (CH3)2CHOH
B
CH3OH + (CH3)2CHI
C
ICH2OCH(CH3)2
D

Explanation

In case of unsymmetric ethers when treated with HI then I attaches to smaller and less complex alkyl group as it follows SN2 mechanism

CH3 $$-$$ O $$-$$ CH(CH3)2 + HI $$ \to $$ CH3I + (CH3)2CHOH
2
MCQ (Single Correct Answer)

AIPMT 2006

Ethylene oxide when treated with Grignard reagent yields
A
primary alcohol
B
secondary alcohol
C
tertiary alcohol
D
cyclopropyl alcohol

Explanation

3
MCQ (Single Correct Answer)

AIPMT 2006

The general molecular formula, which represents the homologous series of alkanols is
A
CnH2n+2O
B
CnH2nO2
C
CnH2nO
D
CnH2n+1O

Explanation

General molecular formula of alkanols is

CnH2n+2O or CnH2n+1OH
4
MCQ (Single Correct Answer)

AIPMT 2005

Which one of the following compounds is most acidic?
A
Cl $$-$$ CH2 $$-$$ CH2 $$-$$ OH
B
C
D

Explanation

Phenols are more acidic than alcohols as they are resonance stabilised whereas alcohols are not.

Further –NO2 is an electron withdrawing group which increases acidic character and facilitates release of proton, whereas –CH3 is an electron donating group which decreases acidic character, thus removal of H+ becomes difficult.

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