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Physical Chemistry
Some Basic Concepts of Chemistry
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Structure of Atom
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Redox Reactions
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Gaseous State
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Chemical Equilibrium
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Ionic Equilibrium
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Solutions
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Thermodynamics
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Inorganic Chemistry
Periodic Table & Periodicity
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Chemical Bonding & Molecular Structure
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Isolation of Elements
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Hydrogen
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s-Block Elements
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p-Block Elements
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d and f Block Elements
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Coordination Compounds
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Salt Analysis
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Organic Chemistry
Basics of Organic Chemistry
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Hydrocarbons
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Haloalkanes and Haloarenes
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Alcohols, Phenols and Ethers
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Aldehydes, Ketones and Carboxylic Acids
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Compounds Containing Nitrogen
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Polymers
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Biomolecules
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Chemistry in Everyday Life
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Practical Organic Chemistry
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1
IIT-JEE 2012 Paper 2 Offline
MCQ (Single Correct Answer)
+3
-1

The shape of XeO2F2 molecule is

A
trigonal bipyramidal.
B
square planar.
C
tetrahedral.
D
see-saw.
2
IIT-JEE 2010 Paper 2 Offline
MCQ (Single Correct Answer)
+2
-0.5
The species having pyramidal shape is
A
SO3
B
BrF3
C
$$SiO_3^{2-}$$
D
OSF2
3
IIT-JEE 2010 Paper 2 Offline
MCQ (Single Correct Answer)
+2
-0.5
Assuming that Hund’s rule is violated, the bond order and magnetic nature of the diatomic molecule B2 is
A
1 and diamagnetic
B
0 and diamagnetic
C
1 and paramagnetic
D
0 and paramagnetic
4
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-0

Match each of the diatomic molecules in Column I with its property/properties in Column II:

Column I Column II
(A) $${B_2}$$ (P) Paramagnetic
(B) $${N_2}$$ (Q) Undergoes oxidation
(C) $$O_2^ - $$ (R) Undergoes reduction
(D) $${O_2}$$ (S) Bond order $$\ge$$ 2
(T) Mixing of $$s$$ and $$p$$ orbitals

A
$$\mathrm{(A)\to(P),(Q),(R),(T);(B)\to(S),(T);(C)\to(P),(Q);(D)\to(P),(Q),(S)}$$
B
$$\mathrm{(A)\to(P),(S),(R),(T);(B)\to(S),(T);(C)\to(P),(Q);(D)\to(P),(T),(S)}$$
C
$$\mathrm{(A)\to(Q),(R),(T);(B)\to(P),(T);(C)\to(P),(Q);(D)\to(T),(Q),(S)}$$
D
$$\mathrm{(A)\to(P),(R),(T);(B)\to(Q),(T);(C)\to(S),(Q);(D)\to(P),(Q),(S)}$$
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