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Write a chemical test to distinguish bet...

Write a chemical test to distinguish between benzaldehyde and acetaldehyde.

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This is distinguish by using Fehling solution test. Only acetaldehyde reduces Fehling solution to cuprous oxide
`(i) underset("Acetaldehyde Fehling solution ")(CH_3 CHO + 2Cu^(+) + 5[OH^(-)] to CH_3 CO O^(-) + 3H_2 O + underset("Red p pt")(Cu_2 O)`
(ii) Benzaldehyde will not give this test.
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ACCURATE PUBLICATION-ALDEHYDES ,KETONES AND CARBOOXALIC ACIDS-CARBOXYLIC ACID (3 MARK QUESTIONS )
  1. Aldehydes have lower boiling points than the corresponding alcohols. E...

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  2. Arrange the following compounds in the increasing order of their boili...

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  3. Write a chemical test to distinguish between benzaldehyde and acetalde...

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  4. Write the chemical equations when acetaldehyde reacts with hydroxyl am...

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  5. Write the reaction between acetone and semicarbazide.

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  6. Give a chemical test to distinguish between aldehyde and ketone.

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  7. What happens when Formaldehyde is treated with ammonia ?

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  8. What is formalin solution ? Give its one use..

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  9. Two uses of formaldehyde.

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  10. What type of aldehyde and ketones undergo Cannizzaro's reaction ?

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  11. What type of hybridisation is involved for carbon in a carbonyl group?

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  12. The symbol of the elements cobalt , aluminium , helium and sodium resp...

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  13. Carboxylic acid exists as dimers, explain why ?

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  14. Why are the boiling points of carboxylic acids higher than the corresp...

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  15. Carboxylic acids do not give the characteristic reactions of carbonyl ...

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  16. Benzoic acid is stronger acid than acetic acid. Justify.

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  17. Fluoroacetic acid is stronger than chloroacetic acid. Explain why ?

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  18. Why carboxylic acids do not give characteristic reactions of -OH group...

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  19. How will you account for the acidic nature of carboxylic acid ?

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  20. Benzoic acid is stronger acid than acetic acid. Justify.

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