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1

JEE Main 2024 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

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) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Chromatographic technique/s based on the principle of differential adsorption is / are

A. Column chromatography

B. Thin layer chromatography

C. Paper chromatography

Choose the most appropriate answer from the options given below:

A

B only

B

A only

C

A & B only

D

C only

3

JEE Main 2024 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Which of the following reaction is correct?

A

$$\mathrm{C}_2 \mathrm{H}_5 \mathrm{CONH}_2+\mathrm{Br}_2+\mathrm{NaOH} \rightarrow \mathrm{C}_2 \mathrm{H}_5 \mathrm{CH}_2 \mathrm{NH}_2+\mathrm{Na}_2 \mathrm{CO}_3+\mathrm{NaBr}+\mathrm{H}_2 \mathrm{O}$$

B

JEE Main 2024 (Online) 29th January Evening Shift Chemistry - Compounds Containing Nitrogen Question 20 English Option 2

C

JEE Main 2024 (Online) 29th January Evening Shift Chemistry - Compounds Containing Nitrogen Question 20 English Option 3

D

$$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{NH}_2 \xrightarrow[\mathrm{H}_2 \mathrm{O}]{\mathrm{HNO}_2, 0^{\circ} \mathrm{C}} \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}+\mathrm{N}_2+\mathrm{HCl}$$

4

JEE Main 2024 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Anomalous behavior of oxygen is due to its

A

large size and low electronegativity

B

small size and high electronegativity

C

small size and low electronegativity

D

large size and high electronegativity

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