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Question-1
Gold is attacked by
(A)
Air
(B)
Alkalies
(C)
Chlorine
(D)
None of these
Question-2
Which of the following has the maximum number of unpaired electrons?
(A)
Mn
2+
(B)
Ti
3+
(C)
V
3+
(D)
Fe
2+
Question-3
In the extraction of Cu, the reaction which does not take place in the Bessemer converter is
(A)
2CuFeS
2
+ O
2
→Cu
2
S + FeS + SO
2
(B)
2Cu
2
S + 3O
2
→2Cu
2
O + 2SO
2
(C)
2Cu
2
O + Cu
2
S →6Cu + SO
2
(D)
2FeS + 3O
2
→2FeO + 2SO
2
Question-4
Molten silver expels absorbed oxygen on
(A)
heating
(B)
melting
(C)
treatment with borax
(D)
cooling
Question-5
The chief ore of silver is
(A)
Silver glance
(B)
Horn silver
(C)
Ruby silver
(D)
Pyragyrite
Question-6
Pure gold is
(A)
22 carats
(B)
24 carats
(C)
18 carats
(D)
21 carats
Question-7
Which transition element show highest oxidation state
(A)
Sc
(B)
Ti
(C)
Os
(D)
Zn
Question-8
Which is a property of chromium?
(A)
hard
(B)
brittle
(C)
crystalline
(D)
all of the above
Question-9
The cations of d-block elements have strong tendency to form complexes with ligands because of their
(A)
small size
(B)
positive charge density
(C)
vacant (n-1)d orbitals
(D)
all of the above
Question-10
The chief ore of zinc is
(A)
Calamine
(B)
Zincite
(C)
Zinc blende
(D)
all of the above
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Plus 2 Biology Science
Tamil Nadu (English Medium)
Practice in Related Chapters
Periodic Classification - II
f - block Elements
d - block Elements
Atomic Structure
Coordination Compounds and Bio-coordination Compounds
p - Block Elements
Biomolecules
Electrochemistry
Chemical Kinetics
Surface Chemistry
Carbolic Acids
Chemistry in Action
Hydroxy Deratives
Isomerism in Organic Chemistry
Nuclear Chemistry
Termodynamics-II
Solid State II
Chemical Equilibrium-II
Purification of Organic Compounds
Ether
Carbonyl Compounds
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