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1
AP EAPCET 2022 - 5th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the isoelectronic pair of ions from the following.

A
$$\mathrm{Pr}^{3+}, \mathrm{Nd}^{3+}$$
B
$$\mathrm{Tb}^{3+}, \mathrm{Dy}^{2+}$$
C
$$\mathrm{Eu}^{2+}, \mathrm{Gd}^{3+}$$
D
$$\mathrm{Pr}^{3+}, \mathrm{Ce}^{4+}$$
2
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Assertion (A) Transition metals and their complexes show catalytic activity.

Reason (R) The activation energy of a reaction is lowered by the catalyst.

A
Both A and R are correct and R is the correct explanation of A.
B
Both A and R are correct but R is not the correct explanation of A.
C
A is correct but R is incorrect.
D
A is incorrect but R is correct.
3
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is not arranged in the correct sequence?

A
$$\mathrm{MO}, \mathrm{M}_2 \mathrm{O}_3, \mathrm{MO}_2, \mathrm{M}_2 \mathrm{O}_5$$ (Decreasing basic nature)
B
Sc, V, Cr, Mn (Increasing number of oxidation states)
C
$$d^5, d^3, d^1, d^4$$ (Increasing magnetic moment)
D
$$\mathrm{Mn}^{2+}, \mathrm{Fe}^{2+}, \mathrm{Cr}^{2+}, \mathrm{Co}^{2+}$$ (Decreasing stability)
4
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Which among the following is coloured?

A
CuCl
B
ScCl$$_3$$
C
CuCl$$_2$$
D
TiCl$$_4$$
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