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1
MHT CET 2026 16th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Identify the number of unpaired electrons present and geometry respectively of $[\text{Co(NH}_3)_6]^{3+}$ complex.
A
0, square planar
B
2, square planar
C
4, octahedral
D
0, octahedral
2
MHT CET 2026 16th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Identify oxidation state of cobalt ion in the complex, $[\text{Co(NH}_3)_5\text{Br}]\text{SO}_4$ .
A
$+2$
B
$+3$
C
$+1$
D
$+4$
3
MHT CET 2026 16th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following ionic species is present in hemoglobin and responsible for transformation of oxygen ?
A
$\text{Ca}^{+2}$
B
$\text{Co}^{+3}$
C
$\text{Fe}^{+2}$
D
$\text{Mg}^{+2}$
4
MHT CET 2026 15th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Identify the complex having the highest number of unpaired electrons from following.
A
$[\text{Co(NH}_3)_6]^{3+}$
B
$[\text{CoF}_6]^{3-}$
C
$[\text{NiCl}_4]^{2-}$
D
$[\text{Ni(CN)}_4]^{2-}$
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