1
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following represents all isoelectronic species ?

A
$$\mathrm{Na}^{+}, \mathrm{Cl}^{-}, \mathrm{O}^{-}, \mathrm{NO}^{+}$$
B
$$\mathrm{N}_2 \mathrm{O}, \mathrm{N}_2 \mathrm{O}_4, \mathrm{NO}^{+}, \mathrm{NO}$$
C
$$\mathrm{Na}^{+}, \mathrm{Mg}^{2+}, \mathrm{O}^{-}, \mathrm{F}^{-}$$
D
$$\mathrm{Ca}^{2+}, \mathrm{Ar}, \mathrm{K}^{+}, \mathrm{Cl}^{-}$$
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

Given below are two statements:

Statement I : The value of wave function, $$\psi $$ depends upon the coordinates of the electron in the atom.

Statement II : The probability of finding an electron at a point within an atom is proportional to the orbital wave function.

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

A
Statement I is true but Statement II is false.
B
Statement I is false but Statement II is true.
C
Both Statement I and Statement II are true.
D
Both Statement I and Statement II are false.
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following is correctly matched?

A
Basic oxides $$\Rightarrow \mathrm{In}_2 \mathrm{O}_3, \mathrm{~K}_2 \mathrm{O}, \mathrm{SnO}_2$$
B
Neutral oxides $$\Rightarrow \mathrm{CO}, \mathrm{NO}_2, \mathrm{~N}_2 \mathrm{O}$$
C
Acidic oxides $$\Rightarrow \mathrm{Mn}_2 \mathrm{O}_7, \mathrm{SO}_2, \mathrm{TeO}_3$$
D
Amphoteric oxides $$\Rightarrow \mathrm{BeO}, \mathrm{Ga}_2 \mathrm{O}_3, \mathrm{GeO}$$
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

Which amongst the following reactions of alkyl halides produces isonitrile as a major product?

(A) $$\mathrm{R-X+HCN\to}$$

(B) $$\mathrm{R-X+AgCN\to}$$

(C) $$\mathrm{R-X+KCN\to}$$

(D) $$\mathrm{R-X+NaCN\mathrel{\mathop{\kern0pt\longrightarrow} \limits_{{C_2}{H_5}OH}^{{H_2}O}}}$$

Choose the most appropriate answer from the options given below:

A
(D) only
B
(C) and (D) only
C
(B) only
D
(A) and (B) only
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