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प्रश्न
Assertion: p-N, N-dimethyl amino benzaldehyde undergoes benzoin condensation
Reason: The aldehydic (−CHO) group is meta directing.
पर्याय
if both assertion and reason are true and reason is the correct explanation of assertion.
if both assertion and reason are true but reason is not the correct explanation of assertion.
assertion is true but reason is false.
both assertion and reason are false.
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उत्तर
if both assertion and reason are true but reason is not the correct explanation of assertion.
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संबंधित प्रश्न
Answer in brief.
Observe the following equation of reaction of Tollens' reagent with aldehyde. How do we know that a redox reaction has taken place? Explain.
\[\ce{R-CHO + 2Ag(NH_{3})^{+}_{2} + OH^{-}->[\triangle] R-CO{O}^{-} + 2Ag↓ + 4NH3 + 2H2O}\]
Which of following is not a property of red phosphorus?
Compounds of general formula, are called ____________.
\[\begin{array}{cc} \phantom{...}\ce{R}\phantom{....}\ce{OR''}\phantom{}\\ \phantom{}\backslash\phantom{..}/\\ \ce{C}\\ \phantom{}/\phantom{..}\backslash\\ \phantom{...}\ce{R'}\phantom{...}\ce{OR''}\phantom{} \end{array}\]
Which of the following is Clemmensen reduction?
What is the action of HCN on propanone?
How is the following conversion effected phenyl methanal into benzoic acid?
Which of the following compound will show a positive silver mirror test?
Write the structure of the products obtained from the following ketones by action of hydrazine in presence of strong base KOH.
How will you prepare Acetic anhydride from acetic acid.
Which from following tests confirms presence of aldehydic group in glucose?
