Chemistry Tips for IIT JEE 2009

Chemistry is one of the most important and scoring section of JEE, says Saurabh Kumar

Chemistry is one of the most important and scoring section of JEE. One of the most important feature of chemistry as a subject in JEE exam is the homogeneity of the paper.

You will find at least one question from almost all chapters three sub division of chemistry, viz., Physical, organic and inorganic chemistry has almost equal weightage, the first two having slight advantage over the third.

The following is expected to be the marks-wise breakup for topics based on previous year’s papers:

Topics	Percentage (Marks)
General Chemistry	8%
Physical Chemistry	30%
Organic Chemistry	35%
Inorganic Chemistry	27%

1. While all topics are important, based on analysis of past years’ papers, following sub-topics have a higher probability of figuring in the paper:

TOPICS	SUB TOPICS	PROBABILITY
Atomic Structure	Heisenberg principle, Quantum numbers	High
Chemical Bonding	Hybridisation, Dipole moment, MOT	High*
Chemical Energetics	Resonance energy, First law of thermodynamics	High
Ionic Equilibrium	Salt hydrolysis, Buffers and Solubility product	High
Chemical Kinetics	Arrhenius equation	High
Electrochemistry	Electrolysis and conductance, Concentration cell	High
Gaseous And Liquid State	Kineticgas theory, Diffusion	High
General Organic Chemistry	All topics	High
Hydrocarbons	Alkanes, Alkynes, Markovnikov’s rules	High*
Ethers	Breaking of ether linkage	High*
Aldehydes & Ketones	Aldol condensation, Nucleophilic addition	High
Carboxylic Acid & Its Functional Derivatives	Carboxylic acid	High
Amines	Exhaustive ammination	High
Purification & Characteristics Of Organic Compounds	Separation and analysis of alcohols and phenols	High
Chemistry Of Representative Elements	Silicon, Structure of oxides and oxyacids	High
Coordination Chemistry & Organo-Metallic Compounds	Colour and Magnetic properties, Hybridization High Qualitative Analysis II and and IVth group Analysis	High

2. Students must not try to learn new things at this stage. They should try to consolidate whatever they already know. In the paper a score of about 45% to 50% will be good enough.

3. Over the years, in chemistry, questions have been repeatedly asked on electrochemistry, thermodynamics, ionic equilibrium, states of matter, chemical bonding and organic chemistry. If we cover these topics thoroughly you would be able to secure 50% marks easily

4. In organic chemistry, reaction mechanism, particularly those involving reactions of alekenes, alkynes, alcohols and carbon compounds are the most important areas in which students are tested. Another important topic is strength of organic acids and bases. Biomolecules is also becoming increasingly popular with JEE question setters.

5. In inorganic chemistry qualitative analysis, coordination compound, Periodic properties and extraction of metals are particularly important. Apart from that questions are also asked from general properties of s, p, d & f block element.