Name the following compounds according to the IUPAC system of nomenclature:
i. `CH_(3)CH(CH_(3))CH_(2)CH_(2)CHO`
ii. `CH_(3)CH_(2)COCH(C_(2)H_(5))CH_(2)CH_(2)Cl`
iii. `CH_(3)CH=CHCHO`
iv. `CH_(3)COCH_(2)COCH_(3)`
v. `CH_(3)CH(CH_(3))CH_(2)C(CH_(3))_(2)COCH_(3)`
vi. `(CH_(3))_(3)C CH_(2)COOH`
vii. `OHC C_(6)H_(4)CHO-p`

Explanation

(i) 4-Methylpentanal , (ii) But-2-enal, (iii) 3,3,5-Trimethylhexan-2-one, (iv) Benzene-1, 4-dicarbaldehyde
(v) 6-chloro-4-ethylhexan-3-one , (vi) Pentane-2, 4-dione
(vii) 3,3-Dimethylbutanoic acid , (viii) 2,3-Dimethylbutanoyl chloride