NEET Chemistry Alcohols Phenols Ethers Class 12 Questions

Which of the following does not answer iodoform test?

The order of reactivity of following alcohols with halogen acids is ......... (A) CH₃CH₂ − CH₂ − OH (B) CH₃CH₂ − CH − OH | CH₃ (C) CH₃ | CH₃ − C − OH | CH₃

Which of the following reactions will not yield phenol?

Which of the following statements is correct?

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.

Which one of the following on oxidation gives a ketone?

Total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers of molecular formula C₄H₈O is:

Which one of the following alcohols reacts instantaneously with Lucas reagent?

The products A and B obtained in the following reactions, respectively, are 3ROH + PCl₃ → 3RCl + A ROH + PCl₅ → RCl + HCl + B

Identify the product in the following reaction: N2Cl + (i) Cu2Br2/HBr (ii) Mg/dry ether (iii) H2O → Product

Complete the following reaction: [A] → [B] → [C] is _________.

Which amongst the following will be most readily dehydrated under acidic conditions?

Given below are two statements: Statement I: The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing nitro group. Statement II: o-nitrophenol, m-nitrophenol and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring. In the light of the above statements, choose the most appropriate answer from the options given below:

Match List – I With List – II.

Given below are two statements: Statement I: In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. HCl + ZnCl₂ known as Lucas reagent. Statement II: Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas reagent. In the light of the above statements, choose the most appropriate answer from the options given below:

The product formed in the following chemical reaction is: CH₃COOCH₃ + NaBH₄, C₂H₅OH → ?

Anisole on cleavage with HI gives:

Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give:

The compound that is most difficult to protonate is ______.

The compound A on treatment with Na gives B, and with PCl₅ gives C. B and C react together to give diethyl ether. A, B and C are in the order of __________.

Which one is the most acidic compound?

The heating of phenyl-methyl ethers with HI produces:

The following reaction can be classified as ______.

The following reaction, CH₃ - C - ONa + CH₃CH₂Cl → CH₃ - C - O - CH₂ - CH₃ is called ______.

Identify Z in the sequence of reactions,

Among the following sets of reactants which one produces anisole?

Phenol is distilled with Zn dust followed by Friedel Crafts alkylation with propyl chloride in the presence of AlCl₃ to give a compound (B). (B) is oxidised in the presence of air to form the compound (C). The structural formula of C is:

Number of isomeric alcohols of molecular formula C₄H₁₀O which give positive iodoform test is