Cracking converts long-chain alkanes into shorter-chain alkanes and what other type of hydrocarbon?

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Multiple Choice

Cracking converts long-chain alkanes into shorter-chain alkanes and what other type of hydrocarbon?

Explanation:
Cracking breaks long-chain alkanes into shorter hydrocarbons, and the other type produced is alkenes. When a C–C bond in a saturated hydrocarbon is cleaved under high temperature, the resulting fragments readily form a carbon–carbon double bond to satisfy carbon’s four-bond rule, giving alkenes alongside the shorter alkanes. Alcohols, aromatics, and ketones are not typical direct products of basic cracking, since cracking doesn’t introduce oxygen or create carbonyl groups or aromatic rings from straight-chain alkanes.

Cracking breaks long-chain alkanes into shorter hydrocarbons, and the other type produced is alkenes. When a C–C bond in a saturated hydrocarbon is cleaved under high temperature, the resulting fragments readily form a carbon–carbon double bond to satisfy carbon’s four-bond rule, giving alkenes alongside the shorter alkanes. Alcohols, aromatics, and ketones are not typical direct products of basic cracking, since cracking doesn’t introduce oxygen or create carbonyl groups or aromatic rings from straight-chain alkanes.

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