1
JEE Main 2022 (Online) 26th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the following is an example of disproportionation reaction ?

A
$$3MnO_4^{2 - } + 4{H^ + } \to 2MnO_4^ - + Mn{O_2} + 2{H_2}O$$
B
$$MnO_4^ - + 4{H^ + } + 4{e^ - } \to Mn{O_2} + 2{H_2}O$$
C
$$10{I^ - } + 2MnO_4^ - + 16{H^ + } \to 2M{n^{2 + }} + 8{H_2}O + 5{I_2}$$
D
$$8MnO_4^ - + 3{S_2}O_3^{2 - } + {H_2}O \to 8Mn{O_2} + 6SO_4^{2 - } + 2O{H^ - }$$
2
JEE Main 2022 (Online) 26th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The most common oxidation state of Lanthanoid elements is +3. Which of the following is likely to deviate easily from +3 oxidation state?

A
Ce (At. No. 58)
B
La (At. No. 57)
C
Lu (At. No. 71)
D
Gd (At. No. 64)
3
JEE Main 2022 (Online) 26th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The correct order of nucleophilicity is

A
F$$-$$ > OH$$-$$
B
JEE Main 2022 (Online) 26th June Evening Shift Chemistry - Basics of Organic Chemistry Question 105 English Option 2
C
JEE Main 2022 (Online) 26th June Evening Shift Chemistry - Basics of Organic Chemistry Question 105 English Option 3
D
NH$$_2^ - $$ > NH3
4
JEE Main 2022 (Online) 26th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Oxidation of toluene to benzaldehyde can be easily carried out with which of the following reagents?

A
CrO3/acetic acid, H3O+
B
CrO3/acetic anhydride, H3O+
C
KMnO4/HCl, H3O+
D
CO/HCl, anhydrous AlCl3
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