1
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

A steam volatile organic compound which is immiscible with water has a boiling point of $$250^{\circ} \mathrm{C}$$. During steam distillation, a mixture of this organic compound and water will boil :

A
above $$100^{\circ} \mathrm{C}$$ but below $$250^{\circ} \mathrm{C}$$
B
above $$250^{\circ} \mathrm{C}$$
C
at $$250^{\circ} \mathrm{C}$$
D
close to but below $$100^{\circ} \mathrm{C}$$
2
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

Match List-I with List-II :

List - I
(Test/reagent)
List - II
(Radical identified)
(A) Lake Test (I) NO$$_3^-$$
(B) Nessler's Reagent (II) Fe$$^{3+}$$
(C) Potassium sulphocyanide (III) Al$$^{3+}$$
(D) Brown Ring Test (IV) NH$$_4^+$$

Choose the correct answer from the options given below :

A
A-IV, B-II, C-III, D-I
B
A-II, B-IV, C-III, D-I
C
A-II, B-III, C-IV, D-I
D
A-III, B-IV, C-II, D-I
3
NEET 2024 (Re-Examination)
MCQ (Single Correct Answer)
+4
-1

Methyl group attached to a positively charged carbon atom stabilizes the carbocation due to

A
–I inductive effect
B
electromeric effect
C
hyperconjugation
D
mesomeric effect
4
NEET 2024
MCQ (Single Correct Answer)
+4
-1

Given below are two statements:

Statement I : The boiling point of three isomeric pentanes follows the order

n-pentane > isopentane > neopentane

Statement II : When branching increases, the molecule attains a shape of sphere. This results in smaller surface area for contact, due to which the intermolecular forces between the spherical molecules are weak, thereby lowering the boiling point.

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

A
Both Statement I and Statement II are correct
B
Both Statement I and Statement II are incorrect
C
Statement I is correct but Statement II is incorrect
D
Statement I is incorrect but Statement II is correct
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