1
JEE Main 2024 (Online) 5th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

While preparing crystals of Mohr's salt, dil $$\mathrm{H}_2 \mathrm{SO}_4$$ is added to a mixture of ferrous sulphate and ammonium sulphate, before dissolving this mixture in water, dil $$\mathrm{H_2SO_4}$$ is added here to :

A
prevent the hydrolysis of ferrous sulphate
B
prevent the hydrolysis of ammonium sulphate
C
increase the rate of formation of crystals
D
make the medium strongly acidic
2
JEE Main 2024 (Online) 5th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify the major product in the following reaction.

JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Haloalkanes and Haloarenes Question 21 English

A
JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Haloalkanes and Haloarenes Question 21 English Option 1
B
JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Haloalkanes and Haloarenes Question 21 English Option 2
C
JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Haloalkanes and Haloarenes Question 21 English Option 3
D
JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Haloalkanes and Haloarenes Question 21 English Option 4
3
JEE Main 2024 (Online) 5th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Identify A and B in the given chemical reaction sequence :

JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 29 English

A
JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 29 English Option 1
B
JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 29 English Option 2
C
JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 29 English Option 3
D
JEE Main 2024 (Online) 5th April Evening Shift Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 29 English Option 4
4
JEE Main 2024 (Online) 5th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : $$\mathrm{NH}_3$$ and $$\mathrm{NF}_3$$ molecule have pyramidal shape with a lone pair of electrons on nitrogen atom. The resultant dipole moment of $$\mathrm{NH}_3$$ is greater than that of $$\mathrm{NF}_3$$.

Reason (R) : In $$\mathrm{NH}_3$$, the orbital dipole due to lone pair is in the same direction as the resultant dipole moment of the $$\mathrm{N}-\mathrm{H}$$ bonds. $$\mathrm{F}$$ is the most electronegative element.

In the light of the above statements, choose the correct answer from the options given below :

A
(A) is false but (R) is true
B
(A) is true but (R) is false
C
Both (A) and (R) are true but (R) is NOT the correct explanation of (A)
D
Both (A) and (R) are true and (R) is the correct explanation of (A)
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