SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They have reactive double bonds.
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They can form addition polymers.
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They react mainly by substitution.
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They can react with water to form alcohols.
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Detailed explanation-1: -Expert Answer. The correct answer is option D. Alkenes themselves are electron-rich and hence they cannot react with bases/nucleophiles. Consequently, option A is incorrect as this statement is not true.
Detailed explanation-2: -Alkenes mainly undergo substitution reactions.
Detailed explanation-3: -3. Select the incorrect statement regarding alkenes. Explanation: Alkenes are not less reactive than alkanes, indeed they are very reactive compared with them due to the presence of C=C.
Detailed explanation-4: -Alkanes do not undergo this reaction because they already only have single -bonds, and so they cannot become more stable or stronger structurally-they are already at the peak, and so can only swap things around in substitution reactions.
Detailed explanation-5: -The answer is e) Dehydration. Alkenes do not undergo dehydration since there are no groups in the compound like a hydroxyl groups which can be removed as a molecule of water. Alkenes are hydrocarbons with a carbon-carbon double bond.