निम्न यौगिकों की संरचनाएँ लिखिए-
(i) 3-methylbutanal
(ii) p-nitropropiophenone
(iii) p-methylbenzaldehyde
(iv) 4-methylpent-3-en-2-one
(v) 4-chloropentan-2-one
(vi) 3-bromo-4-phenylpentanoic acid
(vii) p, p-dihydroxybenzophenone
(viii) Hex-2-en-4-ynoic acid