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Question-1
Which of the ions will give colourless aqueous solution?
(A)
Ni
2+
(B)
Fe
2+
(C)
Cu
2+
(D)
Cu
+
Question-2
The copper ore is crushed and concentrated by
(A)
Smelting
(B)
Froth-flotation
(C)
Roasting
(D)
Bessemerization
Question-3
Paramagnetism is common in
(A)
p-block elements
(B)
d-block elements
(C)
s-block elements
(D)
f-block elements
Question-4
Which of the following has the maximum number of unpaired electrons?
(A)
Mn
2+
(B)
Ti
3+
(C)
V
3+
(D)
Fe
2+
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 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-7
Which of the following compounds will not give positive chromyl chloride test?
(A)
CuCl
2
(B)
HgCl
2
(C)
ZnCl
2
(D)
C
6
H
5
Cl
Question-8
Which compound is formed when excess of KCN is added to an aqueous solution of copper sulphate
(A)
Cu
2
(CN)
2
(B)
K
2
[Cu(CN)
6
]
(C)
K[Cu(CN)
2
]
(D)
Cu
2
(CN)
2
+ (CN)
2
Question-9
The correct statement in respect of d-block elements is
(A)
They are all metals.
(B)
They show variable valency.
(C)
They form coloured ions and complex salts.
(D)
All above statement are correct.
Question-10
Which among the following is a property of zinc?
(A)
greenish white
(B)
bad conductor of heat
(C)
non malleable
(D)
ductile
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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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