The conformations of n-butane, commonly known as eclipsed, gauche and anti-conformations can be interconverted by
- rotation around C-H bond of a methyl group
- rotation around C-H bond of a methylene group
- rotation around C1-C2 linkage
- rotation around C2-C3 linkage
The Correct Option is D
Solution and Explanation
Top Questions on Hydrocarbons
- Hydroxy compound ($\text{A}$) with molecular mass $= 122$ react with excess of acetic anhydride and gives compound ($\text{X}$) with molecular mass $= 290$, then find the no. of hydroxy groups in given compound ($\text{A}$).
- JEE Main - 2026
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Consider the following reaction sequence.
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Which of the following hydrocarbons reacts easily with MeMgBr to give methane?
- WBJEE - 2026
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- $\text{C}_3\text{H}_6\text{Cl}_2$ (X) $\xrightarrow[\Delta]{\text{NaNH}_2 (2 \text{eq})}$ (Y) $\xrightarrow[\text{(ii) NaBH}_4]{\text{(i) Hg(OAc)}_2/\text{H}_2\text{O}}$ $\text{CH}_3\text{COCH}_3$. (Y) $\xrightarrow[\Delta]{\text{Fe/tube}}$ (Z).
Statement-I : Y gives yellow ppt. with $\text{NaOH}/\text{I}_2$.
Statement-II : Two types of H-atoms and one aromatic ring is present in Z and ratio of Z and X is 1 : 3.
Choose the correct option.- JEE Main - 2026
- Chemistry
- Hydrocarbons
- Ph-CH=CH$_2 \xrightarrow[\text{(PhCOO)}_2]{\text{HBr}}$ Product.
Correct statement(s) regarding product :
(a) Ph-CH(Br)-CH$_3$ is minor product
(b) Benzene is also form a bi product
(c) Reaction follow free radical mechanism
(d) In absence of peroxide carbocation mechanism is followed- JEE Main - 2026
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- Hydrocarbons
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Concepts Used:
Hydrocarbons
Hydrocarbons can be described as organic compounds that consists only hydrogen and carbon atoms. These compounds are of different types and thereby have distinct natures. Hydrocarbons are colorless gases and are known for discharging faint odours. These have been categorized under four major classes named as alkynes, alkanes, alkenes, and aromatic hydrocarbons.
Types of Hydrocarbons
- Saturated hydrocarbons - Saturated hydrocarbons are those compounds where there is a single bond exists between carbon atoms and are saturated with atoms of hydrogen.
- Unsaturated hydrocarbons - Hydrocarbons comprises of at least one double or triple bond between carbon atoms are known as unsaturated hydrocarbons.
- Aliphatic hydrocarbons - The term denotes the hydrocarbons formed as an outcome of the chemical degradation of fats. Aliphatic hydrocarbons are basically chemical compounds.
- Aromatic hydrocarbons - They are distinguished because of the presence of benzene rings in them. They give away distinct types of aroma. These hydrocarbons comprises of only hydrogen and carbon atoms.