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

Match List-I with List-II

List - I
Enzyne
List - II
Conversion of
A. Invertase I. Starch into maltose
B. Zymase II. Maltose into glucose
C. Diastase III. Glucose into ethanol
D. Maltase IV. Cane sugar into glucose

Choose the most appropriate answer from the options given below :

A
A-III, B-IV, C-II, D-I
B
A-III, B-II, C-I, D-IV
C
A-IV, B-III, C-I, D-II
D
A-IV, B-II, C-III, D-I
2
JEE Main 2022 (Online) 26th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following elements is considered as a metalloid?

A
Sc
B
Pb
C
Bi
D
Te
3
JEE Main 2022 (Online) 26th June Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

The oxide which contains an odd electron at the nitrogen atom is :

A
N2O
B
NO2
C
N2O3
D
N2O5
4
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
$$8MnO_4^ - + 3{S_2}O_3^{2 - } + {H_2}O \to 8Mn{O_2} + 6SO_4^{2 - } + 2O{H^ - }$$
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