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Question-1
The noble gases are unreactive because they
(A)
have same number of electrons
(B)
have an atomicity of one
(C)
are gases with low densities
(D)
have stable electronic configuration
Question-2
Silicone rubber is used as damp-resistant in paints because of
(A)
insulation property
(B)
resistance to chemical attack
(C)
water proofing property
(D)
none of these
Question-3
Which of the phosphorus oxy acids have garlic taste?
(A)
H
3
PO
4
(B)
H
3
PO
3
(C)
H
4
P
2
O
7
(D)
None of these
Question-4
Which is not known?
(A)
XeF
6
(B)
XeF
4
(C)
XeO
3
(D)
ArF
6
Question-5
Which is the general electronic configuration of group 15 elements.
(A)
ns
2
np
3
(B)
ns
2
np
2
(C)
ns
2
np
4
(D)
ns
2
np
6
Question-6
Which is not a characteristic of p block elements?
(A)
Elements possess relatively higher ionization energy
(B)
Most of them form covalent compounds
(C)
Elements include non-metals alone
(D)
Show inert pair effect
Question-7
Very pure lead is obtained by
(A)
Park’s process
(B)
Pattinson’s process
(C)
Both a and b
(D)
Electrolytic refining
Question-8
The natural abundance of which of the below elements in earth’s crust is relatively low?
(A)
As
(B)
Bi
(C)
Sb
(D)
All of the above
Question-9
Silver impurity of Pb is removed by
(A)
Electrolytc refining
(B)
Liquation
(C)
Pattinson’s process
(D)
Froth floatation
Question-10
Sulphide ore of Lead?
(A)
Alum
(B)
Galena
(C)
Both a and b
(D)
None of them
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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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