Chemistry Chapter 11 Short Questions For Class 11

Last Updated on June 10, 2026 by Ahsa.Pk

These are the most important Chemistry chapter 11 short questions for Class 11. The 1st-year chapter 11 of Chemistry is related to reaction kinetics. These questions are for the Punjab Textbook Board and can be used within all of Punjab where this syllabus is taught.

Students are advised to prepare these questions in order to perform the best in the board examination.

Chemistry Chapter 11 Short Questions for Class 11

Define the following:
i) Cycloalkanes ii) Isomerism iii) Conjugated dienes iv) Inductive effect
Differentiate between:i) Aliphatic and Aromatic hydrocarbons ii) Homolytic and Heterolytic Fission iii) Electrophile and Nucleophile
Explain why alkanes do not undergo addition reactions.
How is elimination reaction considered the opposite of an addition reaction?
Compare the carbocation stability in propene and 2-butene.
Given the molecular formula C₅H₁₀, list all possible structural isomers that are alkenes.
When propene (C₃H₆) undergoes electrophilic addition with HBr, it forms 2-bromopropane as the major product. Explain why 2-bromopropane is favored over 1-bromopropane, using the concept of carbocation stability.
Explain why conjugated alkenes may show different reactivity compared to isolated alkenes.
Explain how inductive effects from alkyl groups stabilize carbocations in alkenes.
Write the equation for each reaction:
i) CH₃CH₂CH=CH₂ with H₂ (Ni catalyst) ii) CH₃CH=CH₂ with Cl₂ iii) CH₃CH₂CH=CHCH₂CH₃ with H₂O (H₂SO₄ catalyst)
Write structural formulas for each of the following compounds:
i) Isobutylene ii) 2,3,4,4-Tetramethyl-2-pentene iii) 2,5-Heptadiene iv) 4,5-Dimethyl-2-hexene v) Vinyl acetylene vi) 1,3-Pentadiene vii) 1-Butyne viii) 3-n-Propyl-1,4-pentadiene ix) Vinyl bromide x) But-1-en-3-yne xi) 4-Methyl-2-pentyne xii) Isopentane
Write down IUPAC names of the following compounds:
i) H₃C–CH=CH(CH₂)₂CH₃ ii) (CH₃)₂C=CH₂ iii) CH₃–CH₂–CH₂–C=CH₂ (with CH(CH₃)₂ branch) iv) CH₂=CH–CH=CH₂ v) CH₂=C–CH₂CH₂CH₃ (with C₂H₅) vi) (CH₃CH₂)₃CH vii) CH₃CH₂C(CH₃)₂CH(CH₂CH₃)CH₃ viii) CH₂=CH–C≡C–CH=CH₂ ix) (CH₃)₃C–CH₂–C(CH₃)₃ x) CH₂=CH–C≡CH xi) CH₃C(CH₃)₂(CH₂)CH₃ (and structures a, b, c)
Differentiate between alicyclic and aromatic compounds.
Define the term isomerism. Give examples.
How does functional group isomerism differ from metamerism? Give examples.
Define tautomerism with an example.
Justify that in alkanes sigma bonds are inert.
Why are alkanes called paraffins?
Differentiate between hydrogenolysis and hydrogenation.
Give the general mechanism of electrophilic addition reactions of alkenes.
What is Markovnikov’s rule? Give an example.
How would you convert ethene into ethyl alcohol?
Convert ethene to (a) Halohydrin (b) Ethylene oxide.
How is ethylene glycol prepared from ethene?
What is ozonolysis? Describe it giving an example. Also give its mechanism.