1. নিম্নের যৌগসমূহের নাম লিখ।

(a) $\overset{1}{\text{CH}}_3 - \underset{\substack{| \\ \text{CH}_3}}{\overset{2}{\text{CH}}} - \overset{3}{\text{CH}} = \overset{4}{\text{CH}} - \overset{5}{\text{CH}}_3$

(c) $\overset{4}{\text{CH}}_2 = \overset{3}{\text{CH}} - \overset{\substack{\text{O} \\ \parallel \\ 2}}{\text{C}} - \overset{1}{\text{CH}}_3$

(d) $\overset{3}{\text{CH}}_3 - \underset{\substack{| \\ \text{NH}_2}}{\overset{2}{\text{CH}}} - \overset{1}{\text{COOH}}$

e) 3Ca(H₂PO₄)₂     

f) FeSO₄(NH₄)₂SO₄.6H₂O