1
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Consider the complex ions,
trans-[Co(en)2Cl2]+ (A) and
cis-[Co(en)2Cl2]+ (B).
The correct statement regarding them is :
A
both (A) and (B) can be optically active.
B
both (A) and (B) can not be optically active.
C
(A) can not be optically active, but (B) can be optically active.
D
(A) can be optically active, but (B) can not be optically active.
2
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct order of the ionic radii of
O2–, N3–, F , Mg2+, Na+ and Al3+ is :
A
N3– < O2– < F < Na+ < Mg2+ < Al3+
B
N3– < F < O2– < Mg2+ < Na+ < Al3+
C
Al3+ < Na+ < Mg2+ < O2– < F < N3–
D
Al3+ < Mg2+ < Na+ < F < O2– < N3–
3
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
The one that is NOT suitable for the removal of permanent hardness of water is :
A
Ion-exchange method
B
Calgon's method
C
Treatment with sodium carbonate
D
Clark's method
4
JEE Main 2020 (Online) 5th September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The increasing order of boiling points of the following compounds is : JEE Main 2020 (Online) 5th September Evening Slot Chemistry - Basics of Organic Chemistry Question 141 English
A
I < III < IV < II
B
IV < I < II < III
C
I < IV < III < II
D
III < I < II < IV
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