1
WB JEE 2025
MCQ (Single Correct Answer)
+1
-0.25

The common stable oxidation states of Eu and Gd are respectively

A
+3 and +3
B
+3 and +2
C
+2 and +3
D
+2 and +2
2
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25

Identify the ion having $$4 f^6$$ electronic configuration.

A
Gd$$^{3+}$$
B
Sm$$^{3+}$$
C
Sm$$^{2+}$$
D
Tb$$^{3+}$$
3
WB JEE 2024
MCQ (Single Correct Answer)
+1
-0.25

Which of the following species exhibits both LMCT and paramagnetism?

A
$$ \mathrm{MnO}_4^{2-} $$
B
$$ \mathrm{MnO}_4^{-} $$
C
$$ \mathrm{Cr}_2 \mathrm{O}_7^{2-} $$
D
$$ \mathrm{CrO}_4^{2-} $$
4
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
A solution of NaNO3, when treated with a mixture of Zn dust and 'A' yields ammonia. 'A' can be
A
caustic soda
B
dilute sulphuric acid
C
concentrated sulphuric acid
D
sodium carbonate
WB JEE Subjects