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1
KCET 2020
MCQ (Single Correct Answer)
+1
-0

Identify the set of paramagnetic ions among the following.

A
$$\mathrm{V}^{2+}, \mathrm{Co}^{2+}, \mathrm{Ti}^{4+}$$
B
$$\mathrm{Ni}^{2+}, \mathrm{Cu}^{2+}, \mathrm{Zn}^{2+}$$
C
$$\mathrm{Ti}^{2+}, \mathrm{Cu}^{2+}, \mathrm{Mn}^{3+}$$
D
$$\mathrm{Sc}^{3+}, \mathrm{Ti}^{3+}, \mathrm{V}^{3+}$$
2
KCET 2020
MCQ (Single Correct Answer)
+1
-0

For $$\mathrm{Cu}_2 \mathrm{Cl}_2$$ and $$\mathrm{CuCl}_2$$ in aqueous medium, which of the following statement is correct?

A
$$\mathrm{CuCl}_2$$ is more stable than $$\mathrm{Cu}_2 \mathrm{Cl}_2$$
B
Stability of $$\mathrm{Cu}_2 \mathrm{Cl}_2$$ is equal to stability of $$\mathrm{CuCl}_2$$
C
Both are unstable
D
$$\mathrm{Cu}_2 \mathrm{Cl}_2$$ is more stable than $$\mathrm{CuCl}_2$$
3
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The elements in which electrons are progressively filled in $$4 f$$-orbital are called

A
actinoids
B
transition elements
C
lanthanoids
D
halogens
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Incorrect statement with reference to $$\mathrm{Ce}(Z=58)$$ is

A
$$\mathrm{Ce}^{4+}$$ is a reducing agent
B
$$\mathrm{Ce}$$ in +3 oxidation state is more stable than in +4
C
Atomic size of $$\mathrm{Ce}$$ is more than that of $$\mathrm{Lu}$$
D
Ce shows common oxidation states of +3 and +4
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