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1
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The number of isomers possible for
[Pt(en)(NO2)2] is :
A
3
B
1
C
4
D
2
2
JEE Main 2020 (Online) 4th September Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The pair in which both the species have the same magnetic moment (spin only) is :
A
[Cr(H2O)6]2+ and [CoCl4]2–
B
[Co(OH)4]2– and [Fe(NH3)6]2+
C
[Mn(H2O)6]2+ and [Cr(H2O)]2+
D
[Cr(H2O)6]2+ and [Fe(H2O)6]2+
3
JEE Main 2020 (Online) 3rd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The d-electron configuration of [Ru(en)3 ]Cl2
and [Fe(H2O)6]Cl2 , respectively are :
A
$$t_{2g}^4e_g^2$$ and $$t_{2g}^6e_g^0$$
B
$$t_{2g}^6e_g^0$$ and $$t_{2g}^6e_g^0$$
C
$$t_{2g}^6e_g^0$$ and $$t_{2g}^4e_g^2$$
D
$$t_{2g}^4e_g^2$$ and $$t_{2g}^4e_g^2$$
4
JEE Main 2020 (Online) 3rd September Evening Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Complex A has a composition of H12O6Cl3Cr. If the complex on treatment with conc.H2SO4 loses 13.5% of its original mass, the correct molecular formula of A is :
[Given: atomic mass of Cr = 52 amu and Cl = 35 amu]
A
[Cr(H2O)5Cl]Cl2.H2O
B
[Cr(H2O)4Cl2]Cl.2H2O
C
[Cr(H2O)3Cl3].3H2O
D
[Cr(H2O)6]Cl3
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