1
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
Identify the incorrect statement.
A
The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes.
B
Interstitial compounds are those that are formed when small atoms like H, C or N are trapped inside the crystal lattices of metals.
C
The oxidation states of chromium in CrO42- and Cr2O72- are not the same.
D
Cr2+ (d4) is a stronger reducing agent than Fe2+ (d6) in water.
2
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Which one of the following ions exhibits d-d transition and paramagnetism as well?
A
CrO42-
B
Cr2O72–
C
MnO4-
D
MnO42-
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code :
Column - I Column - II
A. Co3+ (i) $$\sqrt 8 $$ B.M.
B. Cr3+ (ii) $$\sqrt {35} $$ B.M.
C. Fe3+ (iii) $$\sqrt 3 $$ B.M.
D. Ni2+ (iv) $$\sqrt {24} $$ B.M.
(v) $$\sqrt {15} $$ B.M.
A
A B C D
(iv) (v) (ii) (i)
B
A B C D
(i) (ii) (iii) (iv)
C
A B C D
(iv) (i) (ii) (iii)
D
A B C D
(iii) (v) (i) (ii)
4
NEET 2017
MCQ (Single Correct Answer)
+4
-1
Name the gas that can readily decolourise acidified KMnO4 solution.
A
SO2
B
NO2
C
P2O5
D
CO2
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