1
MHT CET 2026 13th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following elements is doped to a fiber amplifier in an optical fiber communication system?
A
Tm
B
Yb
C
Er
D
Nd
2
MHT CET 2026 11th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which of the following lanthanoids is radioactive?
A
Tm
B
Dy
C
Eu
D
Pm
3
MHT CET 2026 11th April Evening Shift
MCQ (Single Correct Answer)
+1
-0
Which transition series includes elements Co and Mo respectively?
A
4d and 5d
B
5d and 6d
C
3d and 4d
D
3d and 6d
4
MHT CET 2026 11th April Morning Shift
MCQ (Single Correct Answer)
+1
-0
Identify the set of paramagnetic ions among the following.
A
$\text{V}^{+2}, \text{Co}^{+2}, \text{Ti}^{+4}$
B
$\text{Ni}^{+2}, \text{Cu}^{+2}, \text{Zn}^{+2}$
C
$\text{Ti}^{+2}, \text{Cu}^{+2}, \text{Mn}^{+3}$
D
$\text{Sc}^{+3}, \text{Ti}^{+3}, \text{V}^{+3}$

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