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

Which one of the following statements is incorrect related to Molecular Orbital Theory?

A
The $$\pi^*$$ antibonding molecular orbital has a node between the nuclei.
B
In the formation of bonding molecular orbital, the two electron waves of the bonding atoms reinforce each other.
C
Molecular orbitals obtained from $$2 \mathrm{P}_{\mathrm{x}}$$ and $$2 \mathrm{P}_{\mathrm{y}}$$ orbitals are symmetrical around the bond axis.
D
A $$\pi$$-bonding molecular orbital has larger electron density above and below the internuclear axis.
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

An acidic buffer is prepared by mixing :

A
weak acid and it's salt with strong base
B
equal volumes of equimolar solutions of weak acid and weak base
C
strong acid and it's salt with strong base
D
strong acid and it's salt with weak base (The pK$$_a$$ of acid = pK$$_b$$ of the base)
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

Reagents which can be used to convert alcohols to carboxylic acids, are

(A) $$\mathrm{CrO}_3-\mathrm{H}_2 \mathrm{SO}_4$$

(B) $$\mathrm{K}_2 \mathrm{Cr}_2 \mathrm{O}_7+\mathrm{H}_2 \mathrm{SO}_4$$

(C) $$\mathrm{KMnO}_4+\mathrm{KOH} / \mathrm{H}_3 \mathrm{O}^{+}$$

(D) $$\mathrm{Cu}, 573 \mathrm{~K}$$

(E) $$\mathrm{CrO}_3,\left(\mathrm{CH}_3 \mathrm{CO}\right)_2 \mathrm{O}$$

Choose the most appropriate answer from the options given below :

A
(B), (C) and (D) only
B
(B), (D) and (E) only
C
(A), (B) and (C) only
D
(A), (B) and (E) only
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

Select the element (M) whose trihalides cannot be hydrolysed to produce an ion of the form [M(H$$_2$$O$$_6$$]$$^{3+}$$

A
Ga
B
In
C
Al
D
B
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