Problem 30
Choose the incorrect option: (A) (R) will give positive isocyanide test (B) (S) will give \(\mathrm{CO}_{2}\) gas with aq. \(\mathrm{NaHCO}_{3}\) (C) Formation of \((Q)\) is bimolecular nucleophilic substitution (D) All compounds \((\mathrm{P}, \mathrm{Q}, \mathrm{R}, \mathrm{S})\) can be reduced by \(\mathrm{LiAlH}_{4}\)
Problem 31
Which compound can show Hoffmann degradation?
Problem 32
Choose the incorrect option(s): (A) (P) is known as Grignard reagent (B) Formation of \((Q)\) is nucleophilic addition reaction (C) Formation of (Q) involves carbanion as intermediate (D) Formation of \((\mathrm{R})\) involves acid base interaction
Problem 33
Select the correct option if \(T\) is true and \(F\) is false. (a) \(\mathrm{HCOOH} \rightarrow\) Red Ants (b) \(\mathrm{CH}_{3} \mathrm{COOH} \rightarrow\) Vinegar (c) \(\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{CH}_{2}-\mathrm{COOH} \rightarrow\) Rancid butter (d) Ester of glycerol \(\rightarrow\) Natural fat (A) \(\mathrm{T} \mathrm{T} \mathrm{T} \mathrm{F}\) (B) T FT F (C) T F T T (D) \(\mathrm{T} \mathrm{T} \mathrm{T} \mathrm{T}\)
Problem 33
Which of the following reaction is not possible? (A) \(2 \mathrm{R}-\mathrm{COOH}+2 \mathrm{Na} \longrightarrow 2 \mathrm{R}-\mathrm{COONa}+\mathrm{H}_{2}\) (B) \(\mathrm{R}-\mathrm{COONa}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{R}-\mathrm{COOH}+\mathrm{NaOH}\) (C) \(\mathrm{R}-\mathrm{COOH}+\mathrm{NaHCO}_{3} \longrightarrow \mathrm{R}-\mathrm{COO}^{-} \mathrm{Na}^{\oplus}+\mathrm{H}_{2} \mathrm{O}+\mathrm{CO}_{2}\) (D) \(\mathrm{R}-\mathrm{COOH}+\mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{H}_{3} \mathrm{O}^{\oplus}+\mathrm{R}\)
Problem 36
In the following sequence ' \(X\) ' is (A) Ethanoic acid (B) Methanoic acid (C) Butanoic acid (D) Propanoic acid
Problem 36
\(\mathrm{R}-\mathrm{COOH} \longrightarrow \mathrm{R}-\mathrm{CH}_{2} \mathrm{OH}\) Which of the following reagent(s) can be used? (A) \(\operatorname{LiAlH}_{4}\) (B) \(\mathrm{NaBH}_{4}\) (C) \(\mathrm{B}_{2} \mathrm{H}_{6}-\mathrm{THF}\) (D) Both (A) and (C)
Problem 37
$$\mathrm{CH}_{3}-\mathrm{COONa} \frac{\mathrm{NaOH}, \mathrm{CaO}}{\Delta}(\mathrm{P}$$ Choose the incorrect option. (A) Reaction is known as decarboxylation. (B) Carbanion is formed as an intermediate. (C) When aqueous solution of reactant is electrolysed, methane will be obtained at anode. (D) \((\mathrm{P})\) is a methane gas.
Problem 38
\((\mathrm{P}) \stackrel{\mathrm{Red} \mathrm{P} / \mathrm{X}_{2}}{\longrightarrow}(\mathrm{Q})\) (P) has M.F. \(\mathrm{C}_{3} \mathrm{H}_{6} \mathrm{O}_{2}\) which gives fruity smell with alcohol and ' \(\mathrm{X}^{\prime}\) is halogen. Choose the incore: option: (A) Product (Q) is \(\beta\)-halocarboxylic acid (B) Reaction is possible when \(\alpha\)-hydrogen is present (C) Reaction is known as HVZ reaction (D) Red \(\mathrm{P}\) is taken in small amount and ' \(\mathrm{X}\) ' can be chlorine or bromine.
Problem 39
For the following reaction sequence, the product \(\mathrm{R}\) is
