1
JEE Main 2023 (Online) 10th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements: one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$

Assertion A : The energy required to form $$\mathrm{Mg}^{2+}$$ from $$\mathrm{Mg}$$ is much higher than that required to produce $$\mathrm{Mg}^+$$

Reason $$\mathbf{R}: \mathrm{Mg}^{2+}$$ is small ion and carry more charge than $$\mathrm{Mg}^{+}$$

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
Both A and R are correct but R is NOT the correct explanation of A
C
Both A and R are correct and R is the correct explanation of A
D
A is true but R is false
2
JEE Main 2023 (Online) 8th April Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of electronegativity for given elements is:

A
$$ \mathrm{C}>\mathrm{P}>\mathrm{At}>\mathrm{Br}$$
B
$$\mathrm{Br}>\mathrm{C}>\mathrm{At}>\mathrm{P}$$
C
$$\mathrm{Br}>\mathrm{P}>\mathrm{At}>\mathrm{C}$$
D
$$\mathrm{P}>\mathrm{Br}>\mathrm{C}>\mathrm{At}$$
3
JEE Main 2023 (Online) 6th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following elements will remain as liquid inside pure boiling water?

A
Li
B
Br
C
Cs
D
Ga
4
JEE Main 2023 (Online) 6th April Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Group-13 elements react with $$\mathrm{O}_{2}$$ in amorphous form to form oxides of type $$\mathrm{M}_{2} \mathrm{O}_{3}~(\mathrm{M}=$$ element). Which among the following is the most basic oxide?

A
Al$$_2$$O$$_3$$
B
TI$$_2$$O$$_3$$
C
B$$_2$$O$$_3$$
D
Ga$$_2$$O$$_3$$
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