Chapter 4: Problem 104
Which compound cannot reduce alkaline solution of iodine? (a) (b) (c) (d)
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Chapter 4: Problem 104
Which compound cannot reduce alkaline solution of iodine? (a) (b) (c) (d)
These are the key concepts you need to understand to accurately answer the question.
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consider the following sequence of reactions.
Choose the incorrect option assume that all products are major products. (A) \(\mathrm{HCHO} \frac{\text { conc. }}{\mathrm{NaOH}} \mathrm{HCOONa}+\mathrm{CH}_{3} \mathrm{OH}\) (B) \(\mathrm{Ph}-\mathrm{CHO}+\mathrm{HCHO} \frac{\mathrm{conc} .}{\mathrm{NaOH}}{\longrightarrow} \mathrm{PhCOONa}+\mathrm{CH}_{3} \mathrm{OH}\) (C) Cannizaro reaction is disproportionation reaction (D) \(\mathrm{PhCHO}+\mathrm{PhCOCH}_{3} \frac{\stackrel{\ominus}{\mathrm{O}} \mathrm{H}}{293 \mathrm{~K}}\) Benzalacetophenone
\(\alpha\)-hydrogen of carbonyl compound is acidic due to (A) Electron withdrawing effect of carbonyl (B) Resonance stabilisation of conjugate base (C) (+) Inductive effect of alkyl group (D) Both (A) and (B)
For the complete reduction of \(5.8 \mathrm{~g}\) of acetone to isopropyl alcohol, the quantity of \(\mathrm{LiAlH}_{4}\) required (assuming chemical yield to be \(100 \%\) ) is approximately [Mass: \(\mathrm{Li}=6.9, \mathrm{Al}=27\) ] (A) \(3.8 \mathrm{~g}\) (B) \(0.95 \mathrm{~g}\) (C) \(1.9 \mathrm{~g}\) (D) \(15.2 \mathrm{~g}\)
Choose the incorrect option(s). $$ \mathrm{CH}_{3} \mathrm{CN} \stackrel{' \mathrm{X}^{\prime}}{\longrightarrow}(\mathrm{P}) \stackrel{\mathrm{H}_{3} \mathrm{O}^{+}}{\longrightarrow}(\mathrm{Q}) $$ (A) If ' \(X\) ' is stannous chloride in presence of hydrochloric acid, then formation of \((Q)\) is known as 'Stephens reduction. (B) If \(\mathrm{X}\) is \(\mathrm{DIBAL}-\mathrm{H}\), then \(\mathrm{Q}\) is ethanal: (C) If \(\mathrm{X}\) is \(\mathrm{CH}_{3} \mathrm{MgI}\) then \((\mathrm{Q})\) gives (-ve) Tollen's as well as Fehling test. (D) If \(\mathrm{X}\) is \(\mathrm{LiAlH}_{4}\), then \((\mathrm{Q})\) can directly obtain by reacting \(\mathrm{CH}_{3} \mathrm{CN}\) with \(\mathrm{H}_{3} \mathrm{O}^{\oplus:}\)
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