1
MHT CET 2023 11th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which from following cations in their respective oxidation states develops colourless aqueous solution?

A
$$\mathrm{Fe}^{3+}$$
B
$$\mathrm{Fe}^{2+}$$
C
$$\mathrm{Cu}^{2+}$$
D
$$\mathrm{Cu}^{+}$$
2
MHT CET 2023 11th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Oxidation state of manganese in potassium permanganate is:

A
+3
B
+7
C
+5
D
+1
3
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following elements is doped with to obtain fibre amplifiers for optical fibre communication system?

A
Zn
B
Cu
C
Er
D
La
4
MHT CET 2023 10th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify lanthanoid element from following.

A
$$\mathrm{Eu}$$
B
$$\mathrm{Cm}$$
C
$$\mathrm{Am}$$
D
$$\mathrm{Np}$$
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