1
JEE Main 2022 (Online) 26th July Evening Shift
+4
-1

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.

Assertion : Boric acid is a weak acid.

Reason R : Boric acid is not able to release $$\mathrm{H}^{+}$$ ion on its own. It receives $$\mathrm{OH}^{-}$$ ion from water and releases $$\mathrm{H}^{+}$$ ion.

In the light of the above statements, choose the most appropriate answer from the options given below.

A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is NOT the correct explanation of A.
C
A is correct but R is not correct.
D
A is not correct but R is correct.
2
JEE Main 2022 (Online) 26th July Morning Shift
+4
-1

Match List - I with List - II.

List I
(Processes / Reactions)
List II
(Catalyst)
(A) 2SO$$_2$$(g) + O$$_2$$(g) $$\to$$ 2SO$$_3$$(g) (I) Fe(s)
(B) 4NH$$_3$$(g) + 5O$$_2$$(g) $$\to$$ 4NO(g) + 6H$$_2$$O(g) (II) Pt(s) $$-$$ Rh(s)
(C) N$$_2$$(g) + 3H$$_2$$(g) $$\to$$ 2NH$$_3$$(g) (III) V$$_2$$O$$_5$$
(D) Vegetable oil(l) + H$$_2$$ $$\to$$ Vegetable ghee(s) (IV) Ni(s)

Choose the correct answer from the options given below :

A
$$(\mathrm{A})-(\mathrm{III}),(\mathrm{B})-(\mathrm{I}),(\mathrm{C})-(\mathrm{II}),(\mathrm{D})-(\mathrm{IV})$$
B
$$(\mathrm{A})-(\mathrm{III}),(\mathrm{B})-(\mathrm{II}),(\mathrm{C})-(\mathrm{I}),(\mathrm{D})-(\mathrm{IV})$$
C
$$(\mathrm{A})-(\mathrm{IV}),(\mathrm{B})-(\mathrm{III}),(\mathrm{C})-(\mathrm{I}),(\mathrm{D})-(\mathrm{II})$$
D
$$(\mathrm{A})-(\mathrm{IV}),(\mathrm{B})-(\mathrm{II}),(\mathrm{C})-(\mathrm{III}),(\mathrm{D})-(\mathrm{I})$$
3
JEE Main 2022 (Online) 26th July Morning Shift
+4
-1

Borazine, also known as inorganic benzene, can be prepared by the reaction of 3-equivalents of "$$X$$" with 6-equivalents of "$$Y$$". "$$X$$" and "$$Y$$", respectively are :

A
$$\mathrm{B}(\mathrm{OH})_{3}$$ and $$\mathrm{NH}_{3}$$
B
$$\mathrm{B}_{2} \mathrm{H}_{6}$$ and $$\mathrm{NH}_{3}$$
C
$$\mathrm{B}_{2} \mathrm{H}_{6}$$ and $$\mathrm{HN}_{3}$$
D
$$\mathrm{NH}_{3}$$ and $$\mathrm{B}_{2} \mathrm{O}_{3}$$
4
JEE Main 2022 (Online) 25th July Evening Shift
+4
-1

The total number of acidic oxides from the following list is

NO, N2O, B2O3, N2O5, CO, SO3, P4O10

A
3
B
4
C
5
D
6
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