1
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
The Crystal Field Stabilization Energy (CFSE) and magnetic moment (spin-only) of an octahedral aqua complex of a metal ion (Mz+) are $$-$$0.8 $$\Delta$$0 and 3.87 BM, respectively. Identify (Mz+) :
A
V3+
B
Cr3+
C
Mn4+
D
Co2+
2
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Change Language
Monomer units of Dacron polymer are :
A
ethylene glycol and phthalic acid
B
ethylene glycol and terephthalic acid
C
glycerol and terephthalic acid
D
glycerol and phthalic acid
3
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (More than One Correct Answer)
+4
-1
Change Language
Which one of the following compounds is aromatic in nature?
A
JEE Main 2021 (Online) 1st September Evening Shift Chemistry - Basics of Organic Chemistry Question 86 English Option 1
B
JEE Main 2021 (Online) 1st September Evening Shift Chemistry - Basics of Organic Chemistry Question 86 English Option 2
C
JEE Main 2021 (Online) 1st September Evening Shift Chemistry - Basics of Organic Chemistry Question 86 English Option 3
D
JEE Main 2021 (Online) 1st September Evening Shift Chemistry - Basics of Organic Chemistry Question 86 English Option 4
4
JEE Main 2021 (Online) 1st September Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
In the given chemical reaction, colors of the Fe2+ and Fe3+ ions, are respectively :

5Fe2+ + MnO$$_4^ - $$ + 8H+ $$\to$$ Mn2+ + 4H2O + 5Fe3+
A
Yellow, Orange
B
Yellow, Green
C
Green, Orange
D
Green, Yellow
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