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Class 11 Chemistry: Hydrocarbons
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MCQs on hydrocarbons classification, alkanes, alkenes, alkynes, aromatic hydrocarbon, carcinogenicity and toxicity.

Class 11 Chemistry: Hydrocarbons
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25 Questions

1. What is kharash effect?
2. Which of the following is an example of ortho and para directing group?
3. Which of the following compound is more acidic?
4. Addition reaction of hydrogen Bromide to the unsymmetrical alkene follows __________
5. Which among the following is not a carcinogen?
6. Which of the following statement is true regarding the reactivity order in order to form alkyl halides?
7. What is a general formula of alkynes?
8. Alkynes are __________ in nature and first four members are __________ gases.
9. Alkynes show ________________ reactions.
10. Is of hydrogenation is __________ on steric crowding.
11. Which of the following is not a process of halogenation of alkanes?
12. Ethene is prepared from chloroethane this is an example of a reaction __________
13. Alkylbenzene is formed when benzene is treated with an alkyl halide in the presence of anhydrous aluminum chloride. Identify the type of reaction.
14. Calculate the number of sigma(σ) and pi(π) bonds present in benzene (C6H6).
15. Alkene __________ in the physical properties of alkanes.
16. Which of the following reaction is used to increase the length of the carbon chain?
17. Alkynes are ________________ in water and the melting point ________________ with increase in molar mass.
18. Alkenes show __________ isomerism.
19. How many carbons are there in the product of a decarboxylation reaction when compared with the reactant?
20. Which of the following hydrocarbon is formed, when benzene reacts with three chlorine molecules under UV condition?
21. Identify the conditions under which hydrogenation of benzene produces cyclohexane.
22. Benzene on treatment with excess of chlorine in the presence of anhydrous AlCl3 , under dark and cold condition yield 'X'. Identify X.
23. Alkanes are also known as __________
24. What is the intermediate conformation between eclipsed and staggered?
25. Which of the following is a Bayer's reagent?

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