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

Dihydrogen reacts with CuO to give :

A
CuH2
B
Cu
C
Cu2O
D
Cu(OH)2
2
JEE Main 2022 (Online) 28th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Nitrogen gas is obtained by thermal decomposition of :

A
Ba(NO3)2
B
Ba(N3)2
C
NaNO2
D
NaNO3
3
JEE Main 2022 (Online) 28th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language

Given below are two statements :

Statement I : The pentavalent oxide of group-15 element, E2O5, is less acidic than trivalent oxide, E2O3, of the same element.

Statement II : The acidic character of trivalent oxide of group 15 elements, E2O3, decreases down the group.

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

A
Both Statement I and Statement II are true.
B
Both Statement I and Statement II are false.
C
Statement I is true, but Statement II is false.
D
Statement I is false, but Statement II is true.
4
JEE Main 2022 (Online) 28th June Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language

Which one of the lanthanoids given below is the most stable in divalent form?

A
Ce (Atomic Number 58)
B
Sm (Atomic number 62)
C
Eu (Atomic Number 63)
D
Yb (Atomic Number 70)
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