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
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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.