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Question

The - COONa group can be replaced by Hatom on reaction with:
  1. Zn+HCl
  2. H2/Ni
  3. Br2+dil.NaOH
  4. Soda lime

A
Zn+HCl
B
Br2+dil.NaOH
C
H2/Ni
D
Soda lime
Solution
Verified by Toppr

The -COONa group can be replaced by H atom in reaction with soda lime.
Soda lime is a mixture of NaOH and CaO.
RCOONa+NaOHCaORH+Na2CO3.
It is a decarboxylation reaction. CO2 is removed in the form of carbonate.
Alkane formed contains 1 carbon atom less than the carboxylic acid.

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