1
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

How many products (including stereoisomers) are expected from monochlorination of the following compound?

NEET 2025 Chemistry - Some Basic Concepts of Organic Chemistry Question 3 English

A
5
B
6
C
2
D
3
2
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following statements are true?

A. Unlike Ga that has a very high melting point, Cs has a very low melting point.

B. On Pauling scale, the electronegativity values of N and Cl are not the same.

C. $\mathrm{Ar}, \mathrm{K}^{+}, \mathrm{Cl}^{-}, \mathrm{Ca}^{2+}$, and $\mathrm{S}^{2-}$ are all isoelectronic species.

D. The correct order of the first ionization enthalpies of $\mathrm{Na}, \mathrm{Mg}, \mathrm{Al}$, and Si is $\mathrm{Si}>\mathrm{Al}>\mathrm{Mg}>\mathrm{Na}$.

E. The atomic radius of Cs is greater than that of Li and Rb.

Choose the correct answer from the options given below :

A
C and D only
B
A, C, and E only
C
A, B, and E only
D
C and E only
3
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

The standard heat of formation, in $\mathrm{kcal} / \mathrm{mol}$ of $\mathrm{Ba}^{2+}$ is : [Given : standard heat of formation of $\mathrm{SO}_4^{2-}$ ion $(\mathrm{aq})=-216 \mathrm{kcal} / \mathrm{mol}$, standard heat of crystallisation of $\mathrm{BaSO}_4(\mathrm{~s})=-4.5 \mathrm{kcal} / \mathrm{mol}$, standard heat of formation of $\left.\mathrm{BaSO}_4(\mathrm{~s})=-349 \mathrm{kcal} / \mathrm{mol}\right]$

A
+133.0
B
+220.5
C
$-$128.5
D
$-$133.0
4
NEET 2025
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List-I with List-II

List - I
(Exsample)
List - II
(Type of Solution)
A Humidity I Solid in solid
B Alloys II Liquid in gas
C Amalgams III Solid in gas
D Smoke IV Liquid in solid

Choose the correct answer from the options given below:

A
A-III, B-I, C-IV, D-II
B
A-III, B-II, C-I, D-IV
C
A-II, B-IV, C-I,D-III
D
A-II, B-I, C-IV, D-III
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