निम्नलिखित यौगिकों के IUPAC नाम लिखो
(अ)```H-overset(Cl)overset(|)underset(Cl)underset(|)C-Cl```
(ब)```CH_3`-`CH_2`-```overset(Cl)overset(|)(CH)`-```CH_3```
(स)```CH_3```-```underset(Br)underset(|)(CH)```-```underset(CH_3)underset(|)(CH)```-```CH_2```-```CH_3```
(द़)H-```overset(H)overset(|)underset(Br)underset(|)C```-```overset(H)overset(|)C```=```overset(H)overset(|)C```-```overset(H)overset(|)underset(Br)underset(|)C-H```