Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas JEE Main2020ChemistryGeneral Organic ChemistryPractice

Which of the following will have least hindered rotation about carbon-carbon bond?

Options

  1. AAcetylene
  2. BHexachloroethane
  3. CEthane
  4. DEthylene

Correct answer

C. Ethane

Step-by-step solution

Rotation around the C - C bond in ethylene C 2 H 4 and acetylene C 2 H 2 is not possible because of the presence of double and triple bond. Among ethane and hexachloroethane, ethane has the smallest sized group (H) bonded to carbons, hence there will be least hindered rotation about C - C ⁡ bond.

Practice General Organic Chemistry on Quantrex Academy →

More from General Organic Chemistry

Given below are two statements: Statement I: Vapours of the liquid with higher boiling point condense before vapours of the liquid with lower boiling points in fractional distillat 2026The total number of aromatic compounds/species from the following is 2026Given below are two statements : Statement I : A mixture of C₁₂ H₂₂ O₁₁ (sugar) and NaCl can be separated by dissolving sugar in alcohol, due to differential solubility. Statement 2026Shown below is the structure of methyl acetate with three different , and carbon - oxygen bonds. The correct order of bond lengths of these bonds is : 2026Given below are two statements: Statement I: 2,6 -diethylcyclohexanone and 6 -methyl- 2 -n-propylcyclohexanone are metamers. Statement II: 2,2,6,6 -tetramethylcyclohexanone exhibit 2026Match List-I with List-II. List-I (Purification technique) List-II (Used to separate) A. Simple distillation I. Steam volatile compound B. Fractional distillation II. Two liquids w 2026Identify the correct IUPAC name of hydrocarbon ( x ) containing three primary carbon atoms and with molar mass 72 g mol ⁻¹ . 2026Given below are two statements: Statement I: On the basis of inductive effect, the order of stability of alkyl carbanions is CH ₃^-> CH₃ -CH₂^- > ( CH₃ )₂ CH ^- > ( CH₃ )₃ C ^- . S 2026 Full General Organic Chemistry list All NTA Abhyas JEE Main PYQs