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

Which of the following complex is optically inactive?

A
$$\left[\mathrm{RhCl}(\mathrm{CO})\left(\mathrm{PPh}_3\right)\left(\mathrm{NH}_3\right)\right]$$
B
$$\left[\mathrm{Fe}\left(\mathrm{C}_2 \mathrm{O}_4\right)_3\right]^{3-}$$
C
$$\left[\mathrm{Fe}(\mathrm{en})_2 \mathrm{Cl}_2\right]$$
D
$$\left[\mathrm{Pd}(\mathrm{en})_2 \mathrm{Cl}_2\right]$$
2
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Match the following columns.

Polymer Monomer
(i) Buna-S (P) Styrene
(ii) Ethylene glycol (Q) Terylene
(iii) Elastomer (R) Chloroprene

Correct set of answer :

A
(i)-(P) (ii)-(Q) (iii)-(R)
B
(i)-(R) (ii)-(P) (iii)-(Q)
C
(i)-(Q) (ii)-(R) (iii)-(P)
D
(i)-(P) (ii)-(R) (iii)-(Q)
3
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33

Assertion : The chemical properties of different isotope are same.

Reason : Isotopes having same number of neutron.

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 : 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.
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