WBJEE · Chemistry · Hydrocarbons
The correct set(s) of reactions to synthesize benzoic acid starting from benzene is/are
- A (i) \(\mathrm{Br}_2 / \mathrm{Fe}\)
(ii) Mg / dry ether
(iii) \(\mathrm{CO}_2\)
(iv) \(\mathrm{H}_3 \mathrm{O}^{\oplus}\) - B (i) \(\mathrm{Br}_2 / \mathrm{Fe}\)
(ii) \(\mathrm{NH}_3, 25^{\circ} \mathrm{C}\)
(iii) \(\mathrm{NaNO}_2\), dil. \(\mathrm{HCl}, 0^{\circ}\) to \(5^{\circ} \mathrm{C}\)
(iv) \(\mathrm{CuCN} / \mathrm{KCN}\)
(v) dil. \(\mathrm{HCl}, \Delta\) - C (i) \(\mathrm{CH}_3 \mathrm{Cl}\), Anhydrous \(\mathrm{AlCl}_3\)
(ii) \(\mathrm{KMnO}_4 \mid \mathrm{OH}^{\ominus}, \Delta\)
(iii) \(\mathrm{H}_3 \mathrm{O}^{\oplus}\) - D (i) \(\mathrm{CH}_3 \mathrm{COCl}\), Anhydrous \(\mathrm{AlCl}_3\)
(ii) \(\mathrm{Br}_2, \mathrm{NaOH}\),
(iii) \(\mathrm{H}_3 \mathrm{O}^{\oplus}\)
Answer & Solution
Correct Answer
(D) (i) \(\mathrm{CH}_3 \mathrm{COCl}\), Anhydrous \(\mathrm{AlCl}_3\)
(ii) \(\mathrm{Br}_2, \mathrm{NaOH}\),
(iii) \(\mathrm{H}_3 \mathrm{O}^{\oplus}\)
Step-by-step Solution
Detailed explanation
Hint : (A) (C) (D)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Chemistry
- Silicon oil is obtained from the hydrolysis and polymerisation ofWBJEE 2013 Easy
- On heating, chloric acid decomposes toWBJEE 2013 Easy
- The system that contains the maximum number of atoms isWBJEE 2014 Hard
- The condition of spontaneity of a process isWBJEE 2013 Easy
- Which of the following has the dimension if \(\left[\mathrm{ML}^{2} \mathrm{T}^{-2}\right] ?\)WBJEE 2017 Easy
- The acid in which \(\mathrm{O}-\mathrm{O}\) bonding is present isWBJEE 2016 Easy
More PYQs from WBJEE
- When a spring is stretched by \(10 \mathrm{cm}\), the potential energy stored is \(E\). When the spring is stretched by \(10 \mathrm{cm}\) more, the potential energy stored in the spring becomesWBJEE 2012 Easy
- Three point charges \(q,-2 q\) and \(q\) are placed along \(x\) axis at \(x=-a, 0\) and a respectively. As a \(\rightarrow 0\) and \(q \rightarrow \infty\) while \(q a^2=Q\) remains finite, the clectric field at a point \(P\), at a distance \(x(x \gg a)\) from \(x=0\) is \(E=\frac{\alpha Q}{4 \pi \in_0 x \beta} \hat{i}\). ThenWBJEE 2024 Medium
- If \(\lim _{x \rightarrow 0}\left(\frac{1+c x}{1-c x}\right)^{1 / x}=4\), then \(\lim _{x \rightarrow 0}\left(\frac{1+2 c x}{1-2 c x}\right)^{1 / x}\) isWBJEE 2020 Medium
- Eleven equal point charges, all of them having a charge \(+Q\), are placed at all the hour positions of a circular clock of radius \(r\). except at the \(10 \mathrm{h}\) position. What is the clectric field strength at the centre of the clock?WBJEE 2019 Medium
- Let \(A=\left(\begin{array}{ccc}1 & 0 & 0 \\ 0 & \text { cost } & \text { sint } \\ 0 & -\sin t & \cos t\end{array}\right)\)
Let \(\lambda_{1}, \lambda_{2}, \lambda_{3}\) be the roots of \(\operatorname{det}\left(A-\lambda I_{3}\right)=0\), where \(I_{3}\) denotes the identity matrix. If \(\lambda_{1}+\lambda_{2}+\lambda_{3}=\sqrt{2}+1\), then the set of possible values of \(t,-\pi \leq t < \pi\) isWBJEE 2021 Hard - The stable bivalency of \(\mathrm{Pb}\) and trivalency of \(\mathrm{Bi}\) isWBJEE 2012 Easy