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Question-1
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
Question-2
All transition elements exhibit variable valencies because of having
(A)
catalytic property
(B)
(n-1)d and ns electrons
(C)
3 outermost shell electrons
(D)
none of these
Question-3
The highest oxidation state shown by any transition metal is
(A)
+5
(B)
+6
(C)
+7
(D)
+8
Question-4
The copper ore is crushed and concentrated by
(A)
Smelting
(B)
Froth-flotation
(C)
Roasting
(D)
Bessemerization
Question-5
Which of the following is also called Vein gold?
(A)
Gold mixed with quartz in ancient rocks
(B)
Gold scattered in sand and gravel
(C)
Gold in alluvial sand
(D)
Native gold
Question-6
The elements in the beginning of the series exhibit fewer oxidation states because they have
(A)
too many d electrons
(B)
fewer vacant d-orbital
(C)
lesser d electrons
(D)
none of these
Question-7
The important ore of gold is
(A)
Alluvial gold
(B)
Placer gold
(C)
Vein gold
(D)
Both a and b
Question-8
The electronic configuration of chromium is
(A)
3d
6
4s
0
(B)
3d5 4s
1
(C)
3d
4
4s
2
(D)
3d
3
4s
2
4p
1
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
Copper is not attacked by
(A)
acid
(B)
alkalies
(C)
chlorine
(D)
Both a and b
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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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