Hydrolysis of acetamide produces

$C_2H_5OH$ reacts with which of the following to produce a sweet,fruity smell?

Which of the following is used in perfumery?

The correct sequence of acidic strength of the following aliphatic acids in their decreasing order is: $CH_3CH_2COOH$,$CH_3COOH$,$CH_3CH_2CH_2COOH$,$HCOOH$

Which one of the following on heating gives an unsaturated acid?

What is the order of reactivity of the following compounds towards sodalime decarboxylation?
$(i)$ $m$-nitro-phenylacetic acid
(ii) $p$-nitro-phenylacetic acid
(iii) $p$-methoxy-phenylacetic acid
(iv) $p$-methyl-phenylacetic acid