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Wednesday, April 8, 2009
100percentile.com in THE PIONEER

Beat the Physics, Chemistry blues

Physics and chemistry are an integral part of any engineering entrance test. Sandeep Anand gives you tips on how to how prepare for these subjects for the upcoming IIT-JEE

The last minute preparation for the Joint Entrance Examination (JEE) is on. Nothing is tough if your preparation is upto the mark. Here is an insight on how students should prepare and revise for their Chemistry and Physics syllabus.

Physics

The topics Electrostatics and Current Electricity and Electromagnetism each have contributed 15 per cent to the total marks in the past four years. Optics, too, has contributed approximately 13 per cent to the IIT-JEE screening test. In the past four years, approximately 20 per cent of the total marks pertain to Mechanics. While revising for Mechanics, it is important for students to realise that Mechanics though important, takes relatively more time for preparation. Students should keep in mind while revising for Mechanic they should not compromise their time for other subjects preparation.

The next important topics are Modern Physics and Thermal Physics, each commanding a share of about 12 per cent of the total marks. These topics can be covered thoroughly in a relatively less time. Last but not the least, Mechanical Waves has accounted for approximately 12 per cent of the total marks.

Chemistry

Organic Chemistry has generally got the highest weightage in the past four years IIT JEE entrance test paper with average marks of 36 per cent. Topics like Isomerism and Name Reactions, and Stability of reaction intermediates should be thoroughly covered. It is easier to remember the reactions and conversions involving aromatic compounds and a considerable percentage of questions from organic chemistry are based on this part. An understanding of directive influence of substituent groups, resonance and mechanism of reactions definitely helps in cracking the problems of organic chemistry.

Physical Chemistry is a close second with a mean weightage of 33 per cent. In fact, questions on physical chemistry are all numerical in nature. Problems on topics like Electrochemistry, Kinetics, and Chemical and Ionic Equilibrium are always asked either directly or along with some other topic. Students are advised to cover all the topics of physical chemistry. This is an area in which students can be sure of hundred per cent score, provided they have a clear understanding of the concepts and a good practice of solving problems within recommended time.


Inorganic Chemistry and General Chemistry account for 21 per cent and 10 per cent of the total marks. Inorganic Chemistry should be prepared by studying the group properties and periodicity. Lots of emphasis has to be given to exceptions. Questions are asked from these topics invariably. The properties of some important compounds are also asked in the form of reactions. Remembering the reactions involved in qualitative analysis is of great advantage. Questions asked in General Chemistry mostly include that from Stoichiometry and Chemical Bonding.

Last minute tips
Though by this time students would have practiced and formulated a strategy as to how you are going to attempt the JEE papers. However, it is advisable that you should not spend more than one hour on any subject. Usually, mathematics needs more time, we suggest that you attack physics and chemistry papers first keeping in mind the one hour limit and then attempt mathematics. Students must be positive, confident and see the picture that they are getting all the answers right. Students should focus on how relaxed they are. In the last few days, most important factors are winning attitude, confidence and cool headedness.


The writer is the CEO of www.100percentile.com, an online educational portal for Engineering, Medical and MBA coaching.



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