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Presence of electron donating groups at ...

Presence of electron donating groups at o- and p-positions______while that of electron-withdrawing groups____the acidity of phenols.

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Decreases, increases
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The typical reaction of benzene and other aromatic compounds are electrophilic substitution. Presence of electron donating group activates the ring towards electrophilic substitution, while presence of electron withdrawing group deactivates the ring towards electrophilic substituion but at the same time activates the ring towards nucleophilic subsituion. Some groups are predominantly meta-directing and all of these are deactivating. Except halogen, most of the o- and p- directing groups are activating groups. underset(Delta)overset(C_(2)H_(5)Cl.AlCl_(3))rarr(A) major. A is trisubstituted benzene. The structure of A is :

Which of the following groups will increasing the acidity of phenol?

PRADEEP-ALCOHOLS, PHENOLS AND ETHERS-TEST YOUR GRIP (II. FILL IN THE BLANKS)
  1. The acidity of phenol is due to the ….. Of its anion.

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  2. Phenol is acidic because of the resonance stabilisation of its conjuga...

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  3. Presence of electron donating groups at o- and p-positionswhile that o...

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  4. Amongst the three isomers of the nitrophenol, the one that is least so...

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  5. Sodium metal cann be used forethers but not for alcohols.

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  6. o- and p-Nitrophenols can be separated by.

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  7. When acetic acid reacts with ethyl alcohol In presence of conc H(2)SO(...

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  8. Reaction of phenol within the presence of aq. NaOH is called Schottenn...

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  9. The halogen acid (HI, HBr, HCl,HF) which is most reactive towards alc...

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  10. Phenol on treatment with bromine water gives………………but with bromine in ...

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  11. The reaction of phenol with a diazonium salt in weakly alkaline medium...

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  12. In the formation of salicylic acid by Reimer Tiemann reaction, phenol ...

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  13. A mixture of phenol and phthalic anhydride when heated with conc. H(2)...

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  14. Phenol forms coloured complexes with neutral..............

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  15. Benzyl alcohol and phenol can be distinguished by using

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  16. Primary, secondary and tertiary amines can be distinguished by

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  17. A primary alcohol on oxidation gives an……………..which on further oxidati...

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  18. Tertiary alcohols when passed over heated copper undergo……………….to form...

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  19. The enzyme which can catalyse the conversion of glucose to ethanol is

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  20. Absolute alcohol can be prepared from rectified spirit by

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