1
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Which give coloured carbonate precipitate?

A
$$\mathrm{Hg}_2^{2+}$$
B
$$\mathrm{Sr}^{+2}$$
C
$$\mathrm{Bi}^{+3}$$
D
$$\mathrm{Li}^{+}$$
2
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : Out of $$\mathrm{CrO}_3$$ and $$\mathrm{Al}_2 \mathrm{O}_3, \mathrm{CrO}_3$$ having lower melting point than $$\mathrm{Al}_2 \mathrm{O}_3$$.

Reason : Oxidation state of $$\mathrm{Cr}$$ in $$\mathrm{CrO}_3$$ is high.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
3
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : $$\mathrm{S}_2 \mathrm{O}_7^{2-}$$ and $$\mathrm{Cr}_2 \mathrm{O}_7^{2-}$$ both exist.

Reason : Both have same valence electrons.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
4
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : $$\mathrm{Yb}^{2+}$$ is more stable in compare to $$\mathrm{Gd}^{+2}$$.

Reason : The electronic configuration of GD is $$[\mathrm{Xe}] 4 f^7 5 d^2 6 s^2$$.

A
If both assertion and reason are true and reason is the correct explanation of assertion.
B
If both assertion and reason are true, but reason is not the correct explanation of assertion.
C
If assertion is true, but reason is false.
D
If both assertion and reason are false.
AIIMS Subjects
EXAM MAP