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Assertion: The addition of ammonia deriv...

Assertion: The addition of ammonia derivative to a carbonyl compound is carried out in weakly acids medium.
Reason : In weakly acidic medium attacking nucleophile is also protonated.

A

If both (A) and (R) are correct and (R) is the corect explanation of (A)

B

If both (A) and (R) are correct but (R) is not correct explanation of (A)

C

If (A) is correct but (R) is incorrect.

D

If (A) is incorrect but (R) is correct

Text Solution

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The correct Answer is:
C
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OP TANDON-ALDEHYDES AND KETONES -ASSERTION-REASON TYPE QUESTIONS
  1. (A) Carbonyl compounds take part in nucleophilic addition reactions. ...

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  2. (A) Primary alcohols can be easily oxidised to aldehydes. (R) Aldehy...

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  3. Assertion: The addition of ammonia derivative to a carbonyl compound i...

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  4. (A) Fehiling's reagent is a test for all aliphatic aldehydes. (R) Al...

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  5. (A) 2-Methlpropanal undergoes Cannizzaro's reaction. (R) It has no a...

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  6. Assertion (A) Formaldehyde is a planar molecule. Reason (R) It conta...

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  7. (A) Nitromethane can give aldol condensation. (R) alpha hydrogen of ...

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  8. Assertion : Chloral hydrate is a stable compound. Reason : It is sta...

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  9. (A) Acetaldehyde does not show aldol condensation. (R) Compounds ha...

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  10. (A) Lower aldehydes and ketones are soluble in water but solubility de...

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  11. Assertion : Dimethyl sulphide is commonly used for the reduction of a...

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  12. (A) alpha-hydrogen atom of carbonly compouns is acidic in nature. (R...

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  13. Assertion (A): The following intramolecular aldol reaction occurs. ...

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  14. (A) Acetaldehyde reduces Fehlintgs' solution but benzaldehyde does not...

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  15. (A) p-methoxy benzaldehyde is less recative than bensaldehyde towards ...

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  16. (A) Benzaldehyde gives a positive test with Benedict's and Fehiling so...

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