The deactivating tendency of given groups follows the order 
Thus, −NO2 is the most deactivating group.
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?
Held on 30 Apr 2013 · Verified 9 Jul 2026.
−C≡N
−SO3H
−COOH
−NO2
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Markovnikov's rule is applicable to:
Which of the following is a reducing sugar?
Identify the suitable reagent for the following conversion 
How many products (including stereoisomers) are expected from monochlorination of the following compound? 
Which one of the following enzymes contains 'Haem' as the prosthetic group?
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