Make a flow chart of all chap­ters Dis­ci­plined re­vi­sion is key

Fol­low a study sched­ule to pre­pare for your Class 12 eco­nom­ics ex­am­i­na­tion Here is how you can excel in the Class 12 chem­istry pa­per

Hindustan Times (Delhi) - HT Education - - Front Page - Alok Bari­yar

To­tal time 15 50 36 60

TOP­PER TALK ref­er­ence to the nu­mer­i­cal. In macro­eco­nomics, prac­tice nu­mer­i­cals on value added, in­come and ex­pen­di­ture meth­ods, and other ag­gre­gates of Na­tional In­come like per­sonal in­come, per­sonal dis­pos­able in­come and gross na­tional dis­pos­able in­comes.

All the di­a­grams should be neat and clear. They should be sup­ported by ap­pro­pri­ate head­ings and ar­row marks. Un­la­belled di­a­grams do not carry any mean­ing. Make a ref­er­ence to the di­a­gram if any re­la­tion­ship be­tween eco­nomic vari­ables is asked in the ex­am­i­na­tion. Un­der­stand the rea­sons for the re­la­tion­ship be­tween vari­ables such as TP and MP; TFC, TVC and TC; AFC, AVC and AC; MR and TR; AR and MR.

As per the time avail­able to you, you should ad­here to the time guide­lines given in the ac­com­pa­ny­ing box. If you ob­serve th­ese tim­ings, then you will be left with 20 min­utes to re­vise your pa­per. Never leave the ex­am­i­na­tion room early. If you have time at the end, re­vise your pa­per. Make sure that you have not missed out any point be­cause once you leave the room, you are not al­lowed to re-en­ter.

Piles of notes, loads of text­books and late night stud­ies! Yes, board ex­ams have reached your doorsteps. The last few months be­fore the ex­am­i­na­tion are very cru­cial and re­quire ‘smart and quick study’. As a com­bi­na­tion of atoms makes mol­e­cules, sim­i­larly a com­bi­na­tion of ef­forts makes success. You must have a sound strat­egy to excel and be among the top­pers. Even if your mock board exam scores to date have been in the lower bracket, you can al­ways im­prove by 20-25% by fol­low­ing a dis­ci­plined re­vi­sion strat­egy.

Pounce on the syl­labus, af­ter all there are only 16-odd chap­ters and a lim­ited num­ber of FAQs which form a ma­jor chunk of your 70-marks ques­tion pa­per. Di­vide your syl­labus into smaller parts as given be­low:

one com­prises phys­i­cal chem­istry chap­ters like so­lu­tion, solid state, elec­tro­chem­istry, chem­i­cal ki­net­ics and sur­face chem­istry. Since it is a for­mula-based seg­ment, nu­mer­i­cals and some­times small deriva­tions are asked in this part. The fi­nal an­swer of units should be taken care of. Al­ways start the an­swer by writ­ing the stan­dard no­ta­tion fol­lowed by sub­sti­tu­tion of val­ues with units. Nu­mer­i­cals carry step­wise mark­ing, even if you write the gen­eral for­mula and sub­sti­tute the val­ues, you man­age to score half of the to­tal marks.

two in­cludes or­ganic chem­istry chap­ters – halo­gen-con­tain­ing com­pounds, al­co­hol, phenol, ether, alde­hy­des, ke­tones and car­boxylic acid, and amines. This part is based on con­cept and ap­pli­ca­tions. Ques­tions are mainly in

TOP­PER TALK Scored 95/100 in his Class 12 chem­istry board exam

PRAC­TISE A LOT OF SAM­PLE PA­PERS

I wasn’t al­ways an aca­dem­i­cally se­ri­ous stu­dent be­cause of my involvement in co-cur­ric­u­lar ac­tiv­i­ties. I got se­ri­ous af­ter Oc­to­ber when I had my half-yearly ex­am­i­na­tion re­sult in my hand. Prac­tise a lot of sam­ple pa­pers. Clar­ity of con­cepts is ex­tremely im­por­tant to be able to ap­ply it the form of con­ver­sions, name re­ac­tions, mech­a­nism of or­ganic re­ac­tions and loop re­ac­tions.

three con­tains in­or­ganic chem­istry chap­ters such as P-block el­e­ments, Dand F-block el­e­ments, co­or­di­na­tion com­pounds and prin­ci­ples of ex­trac­tion. It has three cat­e­gories – struc­ture-based (for ex­am­ple, draw the struc­ture of XeOF4), rea­son­ing­based (for ex­am­ple, ar­range cer­tain com­pounds in or­der of acid/base strength etc) and re­ac­tion-based (for ex­am­ple, what hap­pens when NCl3 is hy­drol­ysed). In both part two and three, al­ways sup­port the an­swers with struc­tures, ex­am­ples, equa­tions and graphs even if the ques­tion does not ask for it and all equa­tions must be balanced. A re­ac­tion, which is not balanced, is not an equa­tion. Take the fol­low­ing ex­am­ple

Q: Com­plete the fol­low­ing chem­i­cal re­ac­tion equa­tions:

(i) P4 + SO2Cl2 ? Model Ans: (i) P4 + 10 SO2Cl2 ? 4 PCl5 + 10 SO2 (CBSE 2010 Set 3, Q 30).

Sim­i­larly, rea­son­ing ques­tions carry one mark each and de­mand pre­cise an­swers.

four con­sists of biomolecules, poly­mers, and chem­istry in ev­ery­day life. This part re­quires thor­ough read­ing of the NCERT text­book. Ques­tions are fairly straight-from-the-book type. For ex­am­ple, dis­tin­guish be­tween fi­brous and glob­u­lar protein etc or draw the struc­tures of the monomers of the fol­low­ing poly­mers: (i) Te­flon (ii) Poly­thene (CBSE 2009 Set 1, Q 18, Chap­ter - Poly­mers).

Re­mem­ber that re­vi­sion will be com­pleted only af­ter writ­ing two or three small tests on th­ese topics; get them eval­u­ated con­tent­wise and writ­ing-skill­wise.

Other im­por­tant things that you should keep in mind while writ­ing the exam are: read the ques­tion pa­per thor­oughly in the ini­tial 15 min­utes and mark the ques­tions you are con­fi­dent in an­swer­ing. Write the an­swers to all ques­tions of one sec­tion at one place and in se­quence, draw lines for rough work on the right-hand side. This would min­imise the chances of er­rors in not­ing down the an­swer (es­pe­cially the nu­meric val­ues) from rough cal­cu­la­tions. Un­der­line the key­words in the an­swer.

IMAGESBAZAAR

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