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Correct the following statements. 

1) Alkenes undergo substitution reactions. 

2) Alkanes are polar in nature. 

3) When sodium piece is added to ethanol oxygen gas liberates.

4) On complete combustion of carbon compound it gives carbon monoxide and water

1 Answer

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1. Alkenes are unsaturated hydrocarbons. So they undergo addition reactions. 

2. Alkanes are covalent compounds. So they are non-polar in nature. 

3. When sodium piece is added to ethanol it releases hydrogen gas. 

4. On complete combustion of carbon compound it forms carbon dioxide and water.

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