Hydrocarbons — Important Questions
CBSE · Class 11 · Chemistry
76 important questions from Hydrocarbons for CBSE Class 11 Chemistry, with answers. Includes multiple choice and multiple correct questions.
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Important Questions from Hydrocarbons
What is the primary characteristic of aromatic hydrocarbons?
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Planar structure with delocalised electrons
Aromatic hydrocarbons are characterized by a planar structure with delocalised π electrons, which contributes to their stability and unique chemical properties.
Which of the following is a common source of alkanes?
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Natural gas
Natural gas is a primary source of alkanes, containing methane and other hydrocarbons that are used as fuels and industrial raw materials.
What type of isomerism do alkenes exhibit?
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Geometrical isomerism
Alkenes exhibit geometrical isomerism (cis-trans isomerism) due to restricted rotation around the carbon-carbon double bond, resulting in different spatial arrangements.
What is the main reaction type for aromatic hydrocarbons?
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Substitution reactions
Aromatic hydrocarbons primarily undergo electrophilic substitution reactions, where an electrophile replaces a hydrogen atom in the aromatic ring.
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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