Structure of residue (A) and compound (B) formed respectively is:
Show Hint
The Correct Option is A
Solution and Explanation
Step 1: The reaction involves the oxidation of toluene with \(\text{CrO}_2\text{Cl}_2\) and \(\text{CS}_2\). \(\text{CrO}_2\text{Cl}_2\) is a strong oxidizing agent, typically oxidizing the methyl group (\(\text{-CH}_3\)) in toluene to a carboxylic acid (\(\text{COOH}\)) group. This results in a formyl group (\(\text{CHO}\)) being left behind in residue (A), as toluene is partially oxidized.
Step 2: The treatment with water and NaHSO\(_3\) ensures further oxidation of the formyl group (\(\text{CHO}\)) into a carboxyl group (\(\text{COOH}\)). Diluting with HCl gives a sodium salt of the carboxyl group (\(\text{COONa}\)) in compound (B).
Thus, the structures of residue (A) and compound (B) are as follows: Residue (A) has a formyl group (\(\text{CHO}\)) and compound (B) has a carboxylate group (\(\text{COONa}\)).
Top Questions on Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions
- A member of the Lanthanoid series which is well known to exhibit +4 oxidation state is
- KCET - 2025
- Chemistry
- Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions
- Which of the following is an example of a redox reaction?
- MHT CET - 2025
- Chemistry
- Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions
- Which of the following is an example of a redox reaction?
- MHT CET - 2025
- Chemistry
- Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions
- In the reaction \( \text{Zn(s) + \text{Cu}^{2+}(aq) \rightarrow \text{Zn}^{2+}(aq) + \text{Cu(s)} \), what is the oxidation state of zinc in the products?}
- MHT CET - 2025
- Chemistry
- Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions
Observe the following reactions (unbalanced):
\( P_2O_3 + H_2O \rightarrow X \)
\( P_4O_{10} + H_2O \rightarrow Y \)
The number of \( P=O \) bonds present in \( X, Y \) are respectively:
- TS EAMCET - 2024
- Chemistry
- Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions
Questions Asked in JEE Main exam
If a random variable \( x \) has the probability distribution
then \( P(3<x \leq 6) \) is equal to- JEE Main - 2026
- Conditional Probability
- When 300 J of heat is given to an ideal gas with \( C_p = \frac{7}{2}R \), its temperature rises from 20°C to 50°C keeping its volume constant. The mass of the gas is (approximately) ______ g. (R = 8.314 J/mol K)
- JEE Main - 2026
- Thermodynamics
- Let \( \vec{a}, \vec{b}, \vec{c} \) be three vectors such that \[ \vec{a} \times \vec{b} = 2(\vec{a} \times \vec{c}). \] If \( |\vec{a}| = 1 \), \( |\vec{b}| = 4 \), \( |\vec{c}| = 2 \), and the angle between \( \vec{b} \) and \( \vec{c} \) is \(60^\circ\), then \( |\vec{a} \cdot \vec{c}| \) is equal to.
- JEE Main - 2026
- Vector Algebra
- A thin convex lens of focal length \( 5 \) cm and a thin concave lens of focal length \( 4 \) cm are combined together (without any gap), and this combination has magnification \( m_1 \) when an object is placed \( 10 \) cm before the convex lens.
Keeping the positions of the convex lens and the object undisturbed, a gap of \( 1 \) cm is introduced between the lenses by moving the concave lens away. This leads to a change in magnification of the total lens system to \( m_2 \).
The value of \( \dfrac{m_1}{m_2} \) is
- For the matrices \( A = \begin{bmatrix} 3 & -4 \\ 1 & -1 \end{bmatrix} \) and \( B = \begin{bmatrix} -29 & 49 \\ -13 & 18 \end{bmatrix} \), if \( (A^{15} + B) \begin{bmatrix} x \\ y \end{bmatrix} = \begin{bmatrix} 0\\ 0 \end{bmatrix} \), then among the following which one is true?}
- JEE Main - 2026
- Matrices