142) Acetamide is treated separately with the following reagents. Which would give methyl amine?

143) Mark the correct statement:

144) The maximum number of −NO₂ groups that can be introduced by nitration in benzene is usually:

145) p−nitrobromobenzene can be converted to p−nitroaniline by using NaNH₂. The reaction proceeds through the intermediate:

146) An organic compound consumes 4 moles of periodic acid to form following compounds per mole of the starting compounds, HCHO, 3HCOOH and CHOCOOH. The organic compound is: