1
JEE Main 2022 (Online) 28th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

In the structure of SF4, the lone pair of electrons on S is in.

A
equatorial position and there are two lone pair - bond pair repulsions at 90$$^\circ$$.
B
equatorial position and there are three lone pair - bond pair repulsions at 90$$^\circ$$.
C
axial position and there are three lone pair - bond pair repulsion at 90$$^\circ$$.
D
axial position and there are two lone pair - bond pair repulsion at 90$$^\circ$$.
2
JEE Main 2022 (Online) 28th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

A student needs to prepare a buffer solution of propanoic acid and its sodium salt with pH 4. The ratio of $${{[C{H_3}C{H_2}CO{O^ - }]} \over {[C{H_3}C{H_2}COOH]}}$$ required to make buffer is ___________.

Given : $${K_a}(C{H_3}C{H_2}COOH) = 1.3 \times {10^{ - 5}}$$

A
0.03
B
0.13
C
0.23
D
0.33
3
JEE Main 2022 (Online) 28th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Match List - I with List - II :

List-I List-II
(A) negatively charged sol (I) $$F{e_2}{O_3}\,.\,x{H_2}O$$
(B) macromolecular colloid (II) CdS sol
(C) positively charged sol (III) Starch
(D) Cheese (IV) a gel

Choose the correct answer from the options given below:

A
(A) - (II), (B) - (III), (C) - (IV), (D) - (I)
B
(A) - (II), (B) - (I), (C) - (III), (D) - (IV)
C
(A) - (II), (B) - (III), (C) - (I), (D) - (IV)
D
(A) - (I), (B) - (III), (C) - (II), (D) - (IV)
4
JEE Main 2022 (Online) 28th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Match List - I with List - II :

List-I (Oxide) List-II (Nature)
(A) $$C{l_2}{O_7}$$ (I) Amphoteric
(B) $$N{a_2}O$$ (II) Basic
(C) $$A{l_2}{O_3}$$ (III) Neutral
(D) $${N_2}O$$ (IV) Acidic

Choose the correct answer from the options given below :

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