Atomos Test Generator Free PYQs ExamsMy practice Log in / Sign up free

Alcohols, Phenols and Ethers

NEET 2013MCQMedium📈 Topic in 12% papers+4−1
Ques. 1NEET 2013

Among the following ethers, which one will produce methyl alcohol on treatment with hot concentrated HI?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]

Answer

(1) [figure]

Solution

With HI, the ether is first protonated.

For methyl ethers of primary/secondary alkyl groups, I- attacks the less hindered CH3 group (SN2) ⇒ CH3I + alkanol; no methyl alcohol is formed.

For tert-butyl methyl ether, the C–O bond to the tertiary carbon breaks (SN1, stable tertiary carbocation).

As per NCERT:

(CH3)3C-O-CH3 + HI CH3-OH + (CH3)3C-I

∴ Only option (1) gives methyl alcohol.

Answer: (1)

Keep practising — Alcohols, Phenols and Ethers

Ques. 2AIPMT 2012 (Mains)

Which of the following compounds can be used as antifreeze in automobile radiators?

  1. Methyl alcohol
  2. Glycol
  3. Nitrophenol
  4. Ethyl alcohol
Ques. 3AIPMT 2012 (Prelims)

In the following reaction [figure] The major product is

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 4AIPMT 2011 (Mains)

Match the compounds given in List-I with List-II and select the suitable option using the code given below.

  1. (A)-(iv), (B)-(i), (C)-(iii), (D)-(ii)
  2. (A)-(iv), (B)-(ii), (C)-(iii), (D)-(i)
  3. (A)-(ii), (B)-(iii), (C)-(iv), (D)-(i)
  4. (A)-(ii), (B)-(i), (C)-(iv), (D)-(iii)
Ques. 5AIPMT 2011 (Prelims)

In the following reactions, (i) CH3- CH3 |CH- OH |CH-CH3 H+/heat (Major product)A + (Minor product)B (ii) A [in absence of peroxide]HBr, dark (Major product)C + (Minor product)D the major products (A) and (C) are respectively

  1. CH2= CH3 |C-CH2-CH3 and Br |CH2- CH3 |CH-CH2-CH3
  2. CH3- CH3 |C=CH-CH3 and CH3- Br | CH3 |C-CH2-CH3
  3. CH2= CH3 |C-CH2-CH3 and CH3- Br | CH3 |C-CH2-CH3
  4. CH3- CH3 |C=CH-CH3 and CH3- CH3 |CH- Br |CH-CH3
Ques. 6AIPMT 2010 (Mains)

When glycerol is treated with excess of HI, it produces

  1. 2-iodopropane
  2. allyl iodide
  3. propene
  4. glycerol triiodide
Ques. 7AIPMT 2010 (Prelims)

Given are cyclohexanol (I), acetic acid (II), 2, 4, 6-trinitrophenol (III) and phenol (IV). In these the order of decreasing acidic character will be

  1. III > II > IV > I
  2. II > III > I > IV
  3. II > III > IV > I
  4. III > IV > II > I
Ques. 8AIPMT 2010 (Prelims)

Among the following four compounds (i) Phenol (ii) Methyl phenol (iii) Meta-nitrophenol (iv) Para-nitrophenol The acidity order is

  1. (iv) > (iii) > (i) > (ii)
  2. (iii) > (iv) > (i) > (ii)
  3. (i) > (iv) > (iii) > (ii)
  4. (ii) > (i) > (iii) > (iv)
Ques. 9AIPMT 2010 (Prelims)

Which of the following compounds has the most acidic nature?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 10AIPMT 2009

Consider the following reaction : Phenol Zn dust X [Anhyd. AlCl3]CH3Cl Y Alkaline KMnO4 Z the product Z is

  1. benzaldehyde
  2. benzoic acid
  3. benzene
  4. toluene
Ques. 11AIPMT 2009

HOCH2CH2OH on heating with periodic acid gives

  1. 2HCOOH
  2. [figure]
  3. [figure]
  4. 2CO2

All Alcohols, Phenols and Ethers PYQs →

PDFDownload Alcohols, Phenols and Ethers PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Chemistry chapters