1
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)
2
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
3
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
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct options for the rate law that corresponds to overall first order reaction is

A
Rate $$=\mathrm{k}[\mathrm{A}]^0[\mathrm{~B}]^2$$
B
Rate $$=\mathrm{k}[\mathrm{A}][\mathrm{B}]$$
C
Rate $$=\mathrm{k}[\mathrm{A}]^{1 / 2}[\mathrm{~B}]^2$$
D
Rate $$=\mathrm{k}[\mathrm{A}]^{-1 / 2}[\mathrm{~B}]^{3 / 2}$$
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