1
JEE Advanced 2024 Paper 1 Online
Numerical
+4
-0
Complete reaction of acetaldehyde with excess formaldehyde, upon heating with conc. $\mathrm{NaOH}$ solution, gives $\mathbf{P}$ and $\mathbf{Q}$. Compound $\mathbf{P}$ does not give Tollens' test, whereas $\mathbf{Q}$ on acidification gives positive Tollens' test. Treatment of $\mathbf{P}$ with excess cyclohexanone in the presence of catalytic amount of $p$-toluenesulfonic acid (PTSA) gives product $\mathbf{R}$.
Sum of the number of methylene groups $\left(-\mathrm{CH}_2-\right)$ and oxygen atoms in $\mathbf{R}$ is __________.
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2
JEE Advanced 2021 Paper 1 Online
Numerical
+4
-0
In the reaction given below, the total number of atoms having sp2 hybridization in the major product P is _________.
![JEE Advanced 2021 Paper 1 Online Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 47 English](https://app-content.cdn.examgoal.net/fly/@width/image/1kx891sce/59efe82f-f7b3-49bb-bfb0-6b178d37ac28/a0e21de0-5e0a-11ec-9b67-736776121a29/file-1kx891scf.png?format=png)
![JEE Advanced 2021 Paper 1 Online Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 47 English](https://app-content.cdn.examgoal.net/fly/@width/image/1kx891sce/59efe82f-f7b3-49bb-bfb0-6b178d37ac28/a0e21de0-5e0a-11ec-9b67-736776121a29/file-1kx891scf.png?format=png)
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3
JEE Advanced 2020 Paper 1 Offline
Numerical
+4
-0
In the following reaction, compound Q is obtained from compound P via an ionic intermediate
![JEE Advanced 2020 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 49 English](https://imagex.cdn.examgoal.net/1ks4yucww/4631c567-a9b1-431c-825c-5e170c443b1d/482a4e00-f93f-11eb-9779-e12803bb4ff4/file-1ks4yucwx.png)
What is the degree of unsaturation of Q?
![JEE Advanced 2020 Paper 1 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 49 English](https://imagex.cdn.examgoal.net/1ks4yucww/4631c567-a9b1-431c-825c-5e170c443b1d/482a4e00-f93f-11eb-9779-e12803bb4ff4/file-1ks4yucwx.png)
What is the degree of unsaturation of Q?
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4
JEE Advanced 2018 Paper 2 Offline
Numerical
+3
-0
In the following reaction sequence, the amount of $$D$$ (in g) formed from $$10$$ moles of acetophenone is ___________.
(Atomic weights in $$g\,mo{l^{ - 1}}:H = 1,C = 12,$$ $$N = 14,O = 16,$$ $$Br = 80.$$. The yield (%) corresponding to the product in each step is given in the parenthesis)
(Atomic weights in $$g\,mo{l^{ - 1}}:H = 1,C = 12,$$ $$N = 14,O = 16,$$ $$Br = 80.$$. The yield (%) corresponding to the product in each step is given in the parenthesis)
![JEE Advanced 2018 Paper 2 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 62 English](https://imagex.cdn.examgoal.net/6anHAjqy6TRkI3Kyj/pfGNyI84caLP2p5wvZEyHn7ahRZ6I/Q7jcbdplqJNnnDm5BoO7zk/image.png)
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Questions Asked from Aldehydes, Ketones and Carboxylic Acids (Numerical)
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