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 alkyl halides is hydrolyzed most rapidly by the $\text{SN}^2$ mechanism ?
A
$\text{CH}_3\text{-Br}$
B
$(\text{CH}_3)_3\text{C-Br}$
C
$\text{CH}_3\text{-CH}_2\text{-Br}$
D
$(\text{CH}_3)_2\text{CH-Br}$
4
MHT CET 2026 16th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following alkyl halides undergoes $\text{SN}^1$ reaction most readily?
A
$(\text{CH}_3)_3\text{C-F}$
B
$(\text{CH}_3)_3\text{C-Cl}$
C
$(\text{CH}_3)_3\text{C-Br}$
D
$(\text{CH}_3)_3\text{C-I}$

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