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1
JEE Main 2024 (Online) 29th January Evening Shift
MCQ (Single Correct Answer)
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-1
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Identify the reagents used for the following conversion

JEE Main 2024 (Online) 29th January Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 23 English

A
$$\mathrm{A}=\mathrm{LiAlH}_4, \mathrm{~B}=\mathrm{NaOH}_{(\mathrm{aq})}, \mathrm{C}=\mathrm{NH}_2-\mathrm{NH}_2 / \mathrm{KOH} \text {, ethylene glycol }$$
B
$$\mathrm{A}=\mathrm{DIBAL}-\mathrm{H}, \mathrm{B}=\mathrm{NaOH}_{(\mathrm{aq})}, \mathrm{C}=\mathrm{NH}_2-\mathrm{NH}_2 / \mathrm{KOH} \text {, ethylene glycol }$$
C
$$\mathrm{A}=\mathrm{LiAlH}_4, \mathrm{~B}=\mathrm{NaOH}_{(\mathrm{alc})}, \mathrm{C}=\mathrm{Zn} / \mathrm{HCl}$$
D
$$\mathrm{A}=\mathrm{DIBAL}-\mathrm{H}, \mathrm{B}=\mathrm{NaOH}_{(\mathrm{alc})}, \mathrm{C}=\mathrm{Zn} / \mathrm{HCl}$$
2
JEE Main 2024 (Online) 27th January Evening Shift
MCQ (Single Correct Answer)
+4
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The molecular formula of second homologue in the homologous series of mono carboxylic acids is

A
$$\mathrm{C}_2 \mathrm{H}_4 \mathrm{O}_2$$
B
$$\mathrm{C}_2 \mathrm{H}_2 \mathrm{O}_2$$
C
$$\mathrm{CH}_2 \mathrm{O}$$
D
$$\mathrm{C}_3 \mathrm{H}_6 \mathrm{O}_2$$
3
JEE Main 2024 (Online) 27th January Morning Shift
MCQ (Single Correct Answer)
+4
-1
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Highest enol content will be shown by:

A
JEE Main 2024 (Online) 27th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 29 English Option 1
B
JEE Main 2024 (Online) 27th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 29 English Option 2
C
JEE Main 2024 (Online) 27th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 29 English Option 3
D
JEE Main 2024 (Online) 27th January Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 29 English Option 4
4
JEE Main 2023 (Online) 15th April Morning Shift
MCQ (Single Correct Answer)
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JEE Main 2023 (Online) 15th April Morning Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 45 English
In the above conversion the correct sequence of reagents to be added is
A
(i) $\mathrm{KMnO}_{4}$, (ii) $\mathrm{Br}_{2} / \mathrm{Fe}$, (iii) $\mathrm{Fe} / \mathrm{H}^{+}$, (iv) $\mathrm{Cl}_{2}$
B
(i) $\mathrm{Fe} / \mathrm{H}^{+}$, (ii) $\mathrm{HONO}$, (iii) $\mathrm{CuCl}$, (iv) $\mathrm{KMnO}_4$, (v) $\mathrm{Br}_2$
C
(i) $\mathrm{Br}_{2} / \mathrm{Fe}$, (ii) $\mathrm{Fe} / \mathrm{H}^{+}$, (iii) $\mathrm{HONO}$, (iv) $\mathrm{CuCl}$, (v) $\mathrm{KMnO}_{4}$
D
(i) $\mathrm{Br}_{2} / \mathrm{Fe}$, (ii) $\mathrm{Fe} / \mathrm{H}^{+}$, (iii) $\mathrm{KMnO}_{4}$, (iv) $\mathrm{Cl}_{2}$
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