Hydrocarbons

JEE Advanced 2019Multiple CorrectHardNot asked in last 5 yrs+4−1

Ques. 1JEE Advanced 2019

Which of the following are aromatic?

Benzene
Cyclopentadienyl anion
Cyclooctatetraene
Tropylium cation

Answer

(1) Benzene, (2) Cyclopentadienyl anion, (4) Tropylium cation

Solution

Keep practising — Hydrocarbons

Ques. 2JEE Advanced 2026 (Paper-1)

Treatment of buta-1,3-diyne with NaNH2 (2 equivalents), followed by reaction with excess of trans- CH3-CH=CH-CH2-Br gives X as the major product. The maximum number of carbon atoms that are collinear (in a straight line) in X is .

Ques. 3JEE Advanced 2024 (Paper-2)

In the following reaction sequence, the major product Q is L-Glucose [ii) Cr2O3, 775 K, 10-20 atm]i) HI, P [UV]Cl2 (excess) Q

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All JEE Advanced Chemistry chapters

Physical ChemistryStructure of Atom States of Matter Thermodynamics Equilibrium Solid State Solutions Electrochemistry Chemical Kinetics Surface Chemistry

Inorganic ChemistryClassification of Elements and Periodicity in Properties Chemical Bonding and Molecular Structure p-Block Elements (Group 15–18)d- and f-Block Elements Coordination Compounds

Organic ChemistryOrganic Chemistry – Some Basic Principles and Techniques Hydrocarbons Haloalkanes and Haloarenes Alcohols, Phenols and Ethers Aldehydes, Ketones and Carboxylic Acids Amines Biomolecules Polymers Principles Related to Practical Chemistry