How to score good marks in jee chemistry mains exam?

The joint entrance exam(JEE) is conducted by C.B.S.E for admission in premier engineering institute of India like IIT's,NIT's and (GFTI's) for these around 24000 seats about 12 lakh students compete.This exam is quite competitive since number of students per seat is very high.To excel in competitive exams it is necessary to have a good strategy,so in order to get selected one has to maximize the score and to do so maximizing the chemistry score are very crucial.Its very obvious from last years trend that in order to score good overall one should have a very good score in chemistry,also the paper of chemistry is easy in comparison to physics and math,so its easy and important to score good marks in chemistry

Previous year question paper suggest that quite straightforward questions are asked and many questions are repetitive  making it a high scoring subject,requiring less amount of time.

So,how to get good marks in chemistry?

1]STUDY MATERIAL

If you are taking coaching stick with the study material they provide,maximum one reference book and N.C.E.R.T

 If not get one good reference book for JEE each for  physical,organic and inorganic.Do not go for too many reference books as it does not help in long run

2]RETENTION BY PRACTICE

Chemistry scoring is largely based on mastering the concept and retaining the concept and in order to retain the concept practicing question is necessary,do practice at least 40-50 question daily,do not let flow of practicing get disturbed as it affects your flow in studying.

4]MOCK TEST
Practice as many test as possible before exam to develop a good habit of solving problems.The jee mains is online so it is important to practice online mock test to get hold of situation,the idea is to make one familiar with computer and online test.

3]TASTE OF REAL EXAM AT HOME

Practice last year question papers with timer to get to know what is the pressure and how are you performing to analyse what needs to be done to score better,practice the exam strategies listed below at home so you have prepared them well before exam. 

4]EXAM STRATEGIES

Try solving all the easy questions first ,then go for medium difficulty and then try the difficult one,always have some time extra for the questions you tried but could not solve to attempt at last.

Do not get stick to a question for your ego satisfaction,do remember you have to maximize the marks in minimum time and if a question is taking more time than expected move to next question and mark it for last.

Solve chemistry paper first,finish it quickly and use the time left for other subjects since it is easy it will calm your nerve and boost confidence,it is advised to solve chemistry first even if physics or math is your strong subject,since if at last very less time is left for chemistry you may panic and panicking is never good in exam.

Try eliminating wrong answers by analyzing the options but practice this intelligent guessing while studying. 

5]UNDERSTANDING MAINS EXAM PATTERN

Paper 1 and paper 2 will be conducted in 2 shifts per day,twice a year-January and April.Paper 1 is for engineering stream which is fully computer based while paper 2 is for architecture steam which is computer based for mathematics and aptitude while pen and paper based for drawing test(partly pen-paper and partly computer).Paper 1  consist of 3 sections physics,mathematics and chemistry each consisting of 30 questions and total time of 3 hours.4 marks will be awarded for every correct answer and 1 marks will be deducted for every incorrect answer.On an average 2 minutes for each question.  

6]UNDERSTANDING LAYOUT AND IMPORTANT TOPICS

In order to score good in chemistry one need to understand the layout of chemistry paper.The paper can broadly be divided into three parts

1]physical chemistry (about 33% of total question)

2]organic chemistry(about 33% of total question)

3]Inorganic chemistry (about 33%of total question)

so the distribution is quite symmetric but it can change but that change is can be expected to be very small.The distribution of numbers according to topics covered in 11th and 12th can also be seen as

1]Topics covered in 11th account for almost 45% marks

2]Topics covered in 12th account for almost 55% marks

the % of question from 11th and 12th vary year to year so the average is as shown above

now if you can get an idea of the important chapters and that specifically important topics the score can be improved.so here are listed some of the most important topics chapter wise which can help you excel over others,do practice numerical based on these topics. 

Physical chemistry 

1]Mole concept 1 and 2(Understanding is important as is used in many chapters)
mole-mole analysis,concentration terms (especially molarity,dilution and mixing of solution),valency factor and equivalent concept

2]Atomic structure

Bohr model of atom(Bohr radius,speed of electron in an orbit,energy of electron in a orbit) Schrodinger wave equation(only calculation of radial node and angular node,graph of  probability of finding electron vs R,graph of probability density vs R),quantum numbers,aufbau principle,n+l rule,modern electronic configuration

3]Gaseous state

Ideal gas equation( pv=nRT),Dalton's law of partial pressure,Kinetic theory of gases,rms velocity,average velocity,mps velocity,Real gas(compressibility factor,vanderwall equation,real gas parameter a and b,critical temperature,critical pressure,critical volume in terms of a and b)

4]Chemical equilibrium

writing Kp and Kc and their relation,Qc and le-chateliers principle,thermodynamics of chemical equilibrium(graph of k vs T)

5]Ionic equilibrium

pH calculation,salt hydrolysis,Solubility and solubility product(Ksp and s)

6]Thermodynamics

whole chapter is important(do focus on 1st law and irreversible work calculation,2nd law of thermodynamics,spontaneity of a process and themochemistry )

7]Solution and colligative properties

osmotic pressure,RLVP,elevation in boiling point,depression in freezing point,Raults law,Henry law.

8]Electrochemistry

whole chapter is very important(do focus on emf of cell,nerst equation,Faraday's law of electrolysis,conductivity of solution,conductometric titration)

9]Surface chemistry

adsorption(physical and chemical),dependence of rate of adsorption with pressure(adsorption isobar) and temperature(adsorption isotherm) with graph,colloid and properties of colloid.  

9]Chemical kinetics and radioactivityRate of reaction,order and molecularity,zero order,1st order,pseudo 1st order reaction,half time of reaction,temperature dependence of rate constant,radioactivity and half life,mean life and average time of reaction,carbon dating.

Organic chemistry 

1]General organic chemistry(GOC)
(This chapter is the basic chapter to understand next chapters)Inductive effect and its application,Mesomeric effect and resonance effect,resonating structure and stability of resonating structures,factors affecting stability of carbocation,carbanion and free radical.

Nucleophile and nucleophilicity,basicity and basic strength,acidic strength comparison of organic compound.

2]Hydrocarbon

Alkanes- preperation,free radical substitution rxn

 Alkene and alkyne-preperation of alkene and alkyne,electrophic substitution reaction, halogenation,oxymercuration-demercuration,hydroboration-oxidation,free radical addition of HBr

3]Aromatic compound

concept of aromaticity(huckel's rule),preperation,electrophilic substitution reaction of aromatic compound(halogenation,sulphonation,nitration,freidel craft alkylation and acylation)

Phenol-preperation,reimer-teiman formylation and carboxylation

Nitrobenzene & anniline-preperation,chemical reaction, diazonium salt formation reaction

Diazonium salt- preperation,coupling reaction,name reactions of diazonium salt.

4]carbonyl compound and carboxylic acid

preparation of carbonyl compound,nucleophilic addition reaction of carbonyl compound,addition of alcohol(acetal formation),addition of ammonia derivative,addition of HCN and NaHSO3,addition of grignard reagent,aldol condensation(simple,intramolecular,cross with mechanism),canizaro reaction(condition,mechanism,simple,intramolecular,cross canizaro),haloform reaction,reduction and oxidation of aldehyde,test of aldehyde(tollens test,benedict test,fehlings test,shiff test)

Carboxylic acid-preperation of carboxylic acid and derivative,HVZ reaction,heating reaction of carboxylic acid and derivative.

5]Biomolecules

cyclic and acyclic structure of glucose and fructose,reducing and non reducing sugar difference,sucrose,galactose,lactose,cellulose,glycogen,starch structure.amino acids and peptide linkage in proteins.

6]Chemistry in everyday life and polymers

This chapter is complete theoretical chapter and N.C.E.R.T text book should be sufficient. 

INORGANIC CHEMISTRY 

For inorganic it is best to refer the N.C.E.R.T text book for most of chapters as most questions are directly from the texts book and previous year question papers.Some important topics are listed below. 

1]Chemical bonding(important chapter) 

Lewis structure and resonating structure,Valence bond theory,orbital overlap concept,V.S.E.P.R theory,Molecular orbital theory(most important,bond order and bond length comparison of diatomic molecule),bond angle and bond length comparison,dipole moment calculation and polarity of molecule. 

2]Coordination compound(important chapter)  

Iupac nomenclature of coordination compound,Valence bond theory,crystal field theory,isomerism in coordination compound,synergic bonding in metal carbonyls 

3]S-block(N.C.E.R.T should be sufficient) 

General properties,preparation of oxide hydroxide and reactions(Sodium in liquid ammonia is a important topic)

4]P-block(N.C.E.R.T should be sufficient)  

 general properties,preparation and reaction of compounds.

5]D-block(N.C.E.R.T should be sufficient)

preparation and properties of KMnO4,K2Cr2O7,AgNO3,photography 

6]PERIODIC TABLE(refer N.C.E.R.T)

General properties along the period and down the group like atomic radius,ionic radius,Ionization energy,Electron gain enthalpy,Electronegativity. 

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