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Catechol on heating with phthalic anhydr...

Catechol on heating with phthalic anhydridee in the presence of conc. `H_(2)SO_(4)` gives `:`

A

phenolphthalein

B

alizarin

C

fluorescein

D

phenol

Text Solution

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The correct Answer is:
B
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OP TANDON-ALCOHOLS, PHENOLS AND ETHERS-PHENOLS
  1. Identify 'C' in the following : CH(3)-underset(Cl)underset(|)(C)H-C...

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  2. Which of the following orders is true regarding the acidic nature of p...

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  3. Catechol on heating with phthalic anhydridee in the presence of conc. ...

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  4. The increasing order of acid strength amon p-methyoxy phenol (I), p-me...

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  5. 1,2,3-trihydroxybenzene is also known as

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  6. The correct order of acid strength of the following substituted pheno...

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  7. In the following reaction, the product 'X' is :

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  8. In the following compounds The order of acidity is-

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  9. Which of the following is sparingly soluble in water ?

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  10. When FeCl(3) is added to phenol :

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  11. Salicylaldehyde can be prepared from phenol by

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  12. Which one of the following properties is exhibited by phenol ?

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  13. Strength of acidity is in order:

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  14. The product of the following reaction is :

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  15. The reaction in which phenol differs from alcohol is :

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  16. P- cresol react with chloroform in alkaline medium to give compound (A...

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  17. The structure of the compound that gives a tribromo derivative on trea...

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  18. The electrophile involved in the above reaction is:

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  19. Isopropyl benzene is oxidised in the presence of air to a compound 'A'...

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  20. Phenol can be distinguished from ethanol by the following reagents exc...

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