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Question-1
Paramagnetic character arise because of the
(A)
absence of unpaired electrons
(B)
presence of unpaired electron
(C)
presence of paired electrons
(D)
None of these
Question-2
Zinc is purified by
(A)
Reduction
(B)
Roasting
(C)
Electrolytic refining
(D)
Concentration
Question-3
Which of the following is used in medicine?
(A)
Silver amalgam
(B)
Silver salt
(C)
Silver leaf
(D)
Silver Bromide
Question-4
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-5
Which is not a step involved in extraction of zinc?
(A)
Smelting
(B)
Roasting
(C)
Reduction
(D)
Electrolytic refining
Question-6
Which of the following has the maximum number of unpaired electrons?
(A)
Mn
2+
(B)
Ti
3+
(C)
V
3+
(D)
Fe
2+
Question-7
Which among the following is the second transition series?
(A)
Y to Cd
(B)
La and Hf to Hg
(C)
Sc to Zn
(D)
Ac and Rf to 112
Question-8
The general electronic configuration of transition elements is
(A)
(n-1)d
1-10
ns
1-2
(B)
(n-1)d
1-9
ns
1-2
(C)
(n-1)d
1-7
ns
1-2
(D)
(n-1)d
1-8
ns
1-2
Question-9
Pure gold is
(A)
22 carats
(B)
24 carats
(C)
18 carats
(D)
21 carats
Question-10
Which is not a property of copper?
(A)
high lustre
(B)
low melting point
(C)
reddish brown
(D)
high density
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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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