STANDARD Chemistry Alcohols Phenols Ethers Class 12 Questions

In allylic and benzylic alcohols, –OH group is attached to

Which of the following is phenol?

The C – O – H bond angle in alcohols is slightly less than the tetrahedral angle whereas the C – O – C bond angle in ether is slightly greater because

o-Nitrophenol is less soluble in water than p- and m-nitrophenols because

The correct sequence of decreasing acidity is

Which of the following is not a characteristic of alcohol?

Tertiary butyl alcohol gives tertiary butyl chloride on treatment with

Consider the following reaction sequence, CH₃CH(OH)CH₂CH(OH)CH₃ → Conc. H₂SO₄, Heat → X → dil. H₂SO₄, H₂O → Y. X and Y in the reaction respectively are

(CH₃)₂C–CH₂OH ⟶ Conc. H₂SO₄, 170°C ⟶ X In the reaction, X is

CH₃CH₂CH₂OH — conc. H₂SO₄, 170°C → A — ∆, 500°C → B. A & B are

Acid catalysed dehydration of t-butanol is faster than that of n-butanol because

The most suitable reagent for the conversion of RCH₂OH → RCHO is

Conversion of ethyl alcohol into acetaldehyde is an example of

The final product (Y) in the following sequence of chemical reaction is

The major product formed in the following reaction is

What is the correct order of reactivity of alcohols in the following reaction? R - OH + HCl → R - Cl + H₂O

Which of the following compounds is aromatic alcohol?

Which of the following will not yield acetic acid on strong oxidation?

Phenol is less acidic than

Which of the following is most acidic?

Given below are two statements Statement I: Phenols are weakly acidic. Statement II: Therefore they are freely soluble in NaOH solution and are weaker acids than alcohols and water.

Anisole on cleavage with HI gives

Assertion: Phenol is more acidic than m-methoxyphenol. Reason: OCH₃ shows +I effect.

The major products, C and D formed in the following reactions respectively are H₃C - CH₂ - CH₂ - O - C(CH₃)₃, excess HI → C + D

Which of the following alcohols on dehydration gives most stable carbocation?