(1) Isopropyl bromide is heated with alcoholic KOH,
(2) Pent-2-ene reacts with HBr,
(3) Ethene is treated with chlorine water,
(4) 2-methyl propene is heated^with acidic `KMnO_4`
(5) 2-methylpent-2-ene is subjected to reductive ozonolysis?

Explanation

Let's break down the reactions step by step:

### (1) Isopropyl bromide is heated with alcoholic KOH

**Step 1:** Identify the structure of isopropyl bromide.
Isopropyl bromide (2-bromopropane) has the structure:
\[ CH_3-CHBr-CH_3 \]

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