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HCHO with conc. Alkali forms two compoun...

HCHO with conc. Alkali forms two compounds. The change in oxidation number would be

A

(0 to -2) in both the compounds

B

(0 to +2) in both the compounds

C

(0 to +2) in one compounds and (0 to -2) in the second compound

D

all the above are correct

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The correct Answer is:
C
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AAKASH SERIES-ALDEHYDES AND KETONES-objective Exercise -2A
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  2. When acetaldehyde undergoes reaction with Zn-HCl in the presence of Hg...

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  3. HCHO with conc. Alkali forms two compounds. The change in oxidation nu...

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  4. Which does not react with Fehling's solution ?

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  5. A compound reduces Tollen's reagent but does not reduce Fehling's or B...

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  6. 1-Phenylethanol can be prepared by reaction of benzaldehyde with

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  7. Which of the following compound will give yellow precipitate with I(2)...

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  8. C(3)H(8)O underset(K(2)Cr(2)O(7)//H^(+))overset((O))rarr C(3)H(6)O ove...

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  9. Which among the following gives positive iodoform test as well as posi...

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  10. Which of the following compound will not undergo Cannizzaro reaction ?

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  11. Which of the following will show disproportionation when treated with ...

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  12. Which one of following undergoes reaction with 50% sodium hydroxide so...

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  13. Which of the following does not undergo disproportionation in the pres...

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  14. Benzaldehyde undergoes oxidation and reduction in the presence of

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  15. Benzene carbaldehyde is reacted with concentrated NaOH solution to giv...

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  16. Z + (H(3)C CO)(2)O rarr H(3)C CH(3)CN + 2H(3)C COOH Identify Z in t...

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  17. The reaction Aroverset(ɵ)(N)(2)overset(o+)(C )l+Cu + HCl rarr ArCl + N...

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  18. Identify Y and Z for the following reaction overset(NaOH)rarr Y+Z

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  19. Cannizzaro's reaction is an example of auto oxidation

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  20. Which of the followig reagents are used to distinguish aldehydes from ...

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