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Question-1
Which of the following has the maximum number of unpaired electrons?
(A)
Mn
2+
(B)
Ti
3+
(C)
V
3+
(D)
Fe
2+
Question-2
Copper is extracted from
(A)
cuprite
(B)
copper glance
(C)
malachite
(D)
copper pyrites
Question-3
Among the following statement, the incorrect one is
(A)
Calamine and siderite are carbonates.
(B)
Argentite and cuprite are oxides.
(C)
Zinc blende and pyrites are sulphides.
(D)
Malachite and azurite are ores of copper.
Question-4
Diamagnetic character arises because of the
(A)
absence of unpaired electrons
(B)
presence of unpaired electrons
(C)
absence of paired electrons
(D)
none of these
Question-5
Transition elements are classified into how many series?
(A)
3
(B)
4
(C)
5
(D)
6
Question-6
Which of the following compounds is not coloured?
(A)
Na
2
CuCl
4
(B)
Na
2
CdCl
4
(C)
K
4
[Fe(CN)
6
]
(D)
K
3
[Fe(CN)6]
Question-7
All the transition elements are
(A)
Non-metals
(B)
Gases
(C)
Metals
(D)
Metals and non-metals
Question-8
For a transistion metal ion, the effective magnetic moment in BM is given by the formula
(A)
(B)
(C)
(D)
Question-9
The chemical composition of slag formed during the smelting process in the extraction of copper is
(A)
Cu
2
O + FeS
(B)
FeSiO
3
(C)
CuFeS
2
(D)
Cu
2
S + FeO
Question-10
Choose the wrong statement regarding K
2
Cr
2
O
7
(A)
It is a powerful oxidizing agent
(B)
It is used in tanning industry
(C)
It is soluble in water
(D)
It reduces ferric sulphate to ferrous sulphate
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Plus 2 Computer Science
Tamil Nadu (English Medium)
Practice in Related Chapters
Periodic Classification - II
Coordination Compounds and Bio-Coordination Compounds
p - Block Elements
Biomolecules
Electrochemistry
Chemical Kinetics
Surface Chemistry
Hydroxy Deratives
Isomerism in Organic Chemistry
Nuclear Chemistry
Termodynamics-II
Solid State II
Chemical Equilibrium-II
Purification of Organic Compounds
Ether
Carbonyl Compounds
Atomic Structure
f - Block Elements
d - Block Elements
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