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Assertion (A): Chlorobenzene is resistant to electrophilic substitution reaction.
Reason (R): C-Cl bond in chlorobenzene acquires partial double bond characters due to resonance.
Concept: Reactions of Haloarenes - Electrophilic Substitution Reactions
Inversion of configuration occurs in ______.
Concept: Reactions of Haloalkanes - Nucleophilic Substitution Reactions
Assertion: Chlorobenzene is resistant to nucleophilic substitution reaction at room temperature.
Reason (R): C–Cl bond gets weaker due, to resonance.
Concept: Reactions of Haloarenes - Nucleophilic Substitution
Why is the boiling point of o-dichlorobenzene higher than p-dichlorobenzene, but the melting point of para-isomer is higher than ortho-isomer?
Concept: Physical Properties of Haloalkanes and Haloarenes
Write the equation for the following:
Oxidation of chloroform by air and light.
Concept: Polyhalogen Compounds
Why haloarenes are not reactive towards nucleophilic substitution reaction? Give two reactions.
Concept: Reactions of Haloarenes - Nucleophilic Substitution
Arrange the isomeric dichlorobenzene in the increasing order of their boiling point and melting points.
Concept: Physical Properties of Haloalkanes and Haloarenes
Explain why the electrophilic substitution reactions in haloarenes occur slowly and require more drastic conditions as compared to those in benzene.
Concept: Reactions of Haloarenes - Electrophilic Substitution Reactions
An organic compound A with the molecular formula (+) C4H9Br undergoes hydrolysis to form (+) C4H9OH. Give the structure of A and write the mechanism of the reaction.
Concept: Reactions of Haloalkanes - Nucleophilic Substitution Reactions
What happens when
(i) PCl5 is heated ? Write the reactions involved.
Concept: Group 17 Elements - The Halogen Family >> Chlorine
Explain the mechanism of the following reaction:
Concept: Preparation of Ethers
How will you convert: Propene to Propan-2-ol?
Concept: Methods of Preparation of Alcohols
Account for the following: Fluorine does not exhibit positive oxidation state.
Concept: Group 17 Elements - The Halogen Family
Account for the following: Oxygen shows catenation behavior less than sulphur.
Concept: Group 16 Elements - The Oxygen Family
Pb(NO3)2 on heating gives a brown gas which undergoes dimerisation on cooling? Identify the gas
Concept: Group 15 Elements - The Nitrogen Family >> Oxides of Nitrogen
Draw the structures of the following molecules: (HPO3)3
Concept: Group 15 Elements - The Nitrogen Family >> Compounds of Phosphorus
What happens when: SO2 gas is passed through an aqueous solution Fe+3 salt?
Concept: Group 16 Elements - The Oxygen Family >> Sulphur Dioxide
Write the final product(s) in each of the following reactions:
Concept: Chemical Reactions of Alcohols and Phenols >> Reactions Involving Cleavage of Carbon–Oxygen (C–O) Bond in Alcohols
Give reasons: SO2 is reducing while TeO2 is an oxidising agent.
Concept: Group 16 Elements - The Oxygen Family
Out of white phosphorus and red phosphorus, which one is more reactive and why?
Concept: Group 15 Elements - The Nitrogen Family >> Phosphorus - Allotropic Forms
