Practice Preparation - 9.3.4 | 9. Hydrocarbons | CBSE 11 Chemistry Part 2
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9.3.4 - Preparation

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Practice Questions

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Question 1 Easy

What is the general formula for alkenes?

💡 Hint: Count the number of carbon atoms and see how many hydrogens are related to that.

Question 2 Easy

Name one method for preparing alkenes from alkynes.

💡 Hint: Think about what happens when you add hydrogen to ethyne.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the general formula for alkenes?

C_nH_(2n+2)
C_nH_(2n)
C_nH_(n-1)

💡 Hint: Consider how many hydrogen atoms are lost relative to alkanes.

Question 2

True or False: Alkenes can be prepared from vicinal dihalides.

True
False

💡 Hint: Think about the structure of vicinal dihalides.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Propose a synthesis pathway to form 1-butene starting from 2-bromobutane.

💡 Hint: Consider the elimination step and the position of the double bond.

Challenge 2 Hard

Explain the significance of using Lindlar’s catalyst in forming cis-alkenes.

💡 Hint: Think about how catalyst choice influences the product's chemical properties.

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