Posts Tagged ‘CBSE’

After class 10 what!!

Consider this before you walk into a stream after school

Students completing xth standard are often confused about selecting a career path. Selecting subjects after xth standard is not an easy task. For a successful career one must plan the future carefully and must have a workable plan to support. Exploring the available career options, knowing about oneself and the capability to take right decisions and ambitions, future goals are some of the factors needed for a successful career planning.

Seek help through seminars

There are various seminars held through which one can know about the available career options and get in touch with the respective institutes. One should have a clear perspective about their goals and accordingly seek help from teachers, parents and elders.

Check your aptitude

Aptitude, grades and marks must be considered while selecting a stream. It is often advised that students take aptitude tests through which students learn more about their skills, strengths, weaknesses and intelligence in various fields. Aptitude tests turn out to be very useful while selecting any stream. It helps evaluate one’s personality and provides the examinee with clarity which they would have never thought of or it may also tell them whether the profession one is interested to take up would suit their personality or not. It helps the students to list the suitable career options and also to select one of them.

Practice them for free

Nowadays there are various aptitude tests available for free on the internet for students to take up. CBSE has also introduced two and a half hour long aptitude test which is designed specifically for Indian students. This test may assess the student in following areas :
• Art Aptitude
• Numerical Aptitude
• Behavioural science aptitude
• Social Aptitude
• Scientific Aptitude
• And, Interest Profile

One must also consider the personal interests while electing a stream. One’s interest when matched with the potential career gives fruitful results.

For one’s mental satisfaction and peace, one must select a career according to their interests as it may give them pleasure while working and they may enjoy doing their work which may lead to a happy, peaceful and contended life.

Also , It is seen often that parents push their kids to join a particular stream after Xth which should not be done as it may curb the child’s interest and the potential with which he can work in the field he is interested in . One should remember that ‘Birds only fly high when they are free in sky and not when they are caged !’ Parents should encourage them to take decisions and should support them whenever needed and should also advice on the pros and cons of taking up a stream.

Be clear of what you want
• Which subjects interest you the most!
• Which subjects one is afraid or hates the most and feels that it is boring and is not interested in!
• What are one’s ambitions and interests!

So when you choose a subject do keep all these points in mind and all the best!

Now Open book exam for CBSE board exams

The Central Board of Secondary Education (CBSE) is planning to introduce a Pre Announced Test (PAT) for 2014 board exams for all subjects in class X and selected subjects in class XII. The PAT could be the biggest change in Indian education system as it will follow the ‘open book exam’ concept. The objective of the new format is to bring about a change in the classroom learning process and enhance the analytical skills of the students.

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• Download CBSE Physics Question Paper 2012 (plustwophysics.com)

CCE Debate – Is CCE Good or bad?

After the implementation of CCE (Continuous and Comprehensive Evaluation) by CBSE, there’s a lot of confusion among schools, teachers, students as well as administrators. The system was started to minimize the exam stress. But now, every day the students are the victim of undue exam stress. There are more evaluations than learni

ng. Students are continuously stressed as there will be exams almost eveyday.

At the same time CBSE is doing away with exams at the Board level creating the situation more laissez-faire, There is no uniformity in evaluation from school to school.

The schools are giving plenty of A grades to students most of them donot deserve it. They pass out Class X with gorgeous marks and get admission in the stream of their ‘choice’ . Class XI will turn out to be extremely difficult for them. They waste 2 years or more – failing in class XI and XII.

CCE is not suitable for a country like India where there are overcrowded classroom ranging from 50 to 65 students per class.

The teachers are also overburdened with lot of clerical work – assigning and tabulating the CCE scores, making reports, evaluating — all these at the cost of the time to be spent of preparation for real classroom teaching.

Is it not time to think on whether or not to continue with the system of CCE?

What do you think?

Raise your voice. Comment on and let the authorities rethink!

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Central Board of Secondary Education (CBSE) schools will teach their students to speak right.

CBSE has asked its schools to train their students in speaking and listening skills to improve their diction and communication skills.

The CBSE has proposed a formal testing of speaking and listening skills in the form of Formative Assessments (FAs), in English at secondary and senior secondary levels from the academic year 2013-14.

In its latest circular to all the schools affiliated with the central board, the CBSE has envisaged that all language skills need to be integrated into the school English language curriculum.

The circular says, “In today’s world, where national and international boundaries have no real meaning for the global citizen, the English language has acquired the role of a crucial medium of communication. It has become the language for knowledge seeker as we move towards a knowledge-based economy,’’

No change in the pattern of AIEEE 2012

Both the online and offline versions of AIEEE 2012 entrance exam will have the same difficulty level, clarified CBSEwhich conducts AIEEE. While the online exam will be held multiple times over four days in May, the offline exam would be conducted only once on April 29th, 2012. Following the concern

of coaching institutes and students as whether this multiplicity of online question papers will result in both easy and difficult sets being prepared, the CBSE clarified that multiple sets of question papers have been prepared for AIEEE-2012.

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CBSE Class XI Results show sharp decline since the introduction of CCE

The results of Class XI is shamefully low since the introduction of CCE in classes up to class X. The CCE ensures pass of every student. It is further emphasized that the student should get admission in the same school. This criteria make the students less responsible and they get good percentage in class X without much knowledge expected of that level.

The students mainly get good grades in formative assessments in which most of the activities are performed in groups. Almost all students of the group are getting almost identical marks and grades. So, even a weak student gets good grades because he is part of the group. These grades scored by him ensures his admission to science group in class XI. Only when the result of Class XI comes he realizes that he is not fit for the science group (or any other group he has chosen).

The teachers of class XI are more worried where the administration wants 100% result out of these students with little aptitude towards the subject. It is high time that the system be reviewed and ensure that only students with aptitude towards science steam come in Science group as well as other streams.

You responses in this regard are welcome. All students and teachers as well as parents are requested to take part in this discussion. Post your views and responses as comments to this post.

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Class XI CBSE Chemistry Model Paper

Chemistry

Class – XI

Time – 3 Hrs. Marks – 70

General Instructions :

i) All questions are compulsory.

ii) Q. s 1 to 8 carry 1 makes each. Answer them in one word or in about on sentence.

iii) Q. s 9 to 18 carry 2 marks each. Answer these in about 30 words each.

iv) Q. s 19 to 27 carry 3 marks each. Answer these in about 40 words each.

v) Q. s 28 to 30 are long answer questions carrying 5 marks each.

vi) Use long table if necessary, use of calculator is not permitted.

1. Write IUPAC name of the following compound : 1

2. Write down the formula of the monomer of silicone. 1

3. What would be the effect of increasing pressure on the equilibrium. 1

PCl₅ (g) = Pcl₃ (g) + Cl₂ (g) ?

4. What is the oxidation number of oxygen in Na₂O₂ ? 1

5. What would be the sign of S for the process 2H (g) à H₂ (g) ? 1

6. What is compressibility factor of a gas ? 1

7. Configuration of ion M⁺² is Is² 2s² 2p⁵ what is configuration of atom M? 1

8. How many oxygen atoms would be there in 1 mole of H₂SO₄ ?

9. a) What is the hybridization of each carbon in CH₃ – CH₂ ? 1

b) What is the function of AlCl₃ (anhyd) in Friedel Crafts reaction ? 1

10. How N and S are detected when present in an organic compound together ? (Reaction only) 2

OR

Which is the electrophillic centre in CH₃Br and why ?

11. Why lithium does not form a superoxide but potassium does ? 2

OR

Why BeSO₄ is water soluble but BaSO₄ is not ?

12. Balance the following redox feaction by ion 2

Electron method :

Cr₂ O₇^-2 + Fe⁺² à Fe⁺³ + Cr⁺³ in acidic medium.

13. a) What is the change in internal energy in a process in which 700J of heat is absorbed and 450J of work is done by the system ?

b) Define a spontaneous process in terms of Gibbs energy. 1

14. Show by MO concept which one out of O₂ and O₂+ would be more stable. 2

OR

Explain all the orbital overlaps in a molecule of ethene (C₂H₄) by drawing a sutitable diagram.

15. Calculate the mass of (NH₄)₂ S required to prepare 200 ml of O.1 molar aqueous solution.

(N = 14, H = 1, S = 32)

16. a) Write down the IUPAC name and symbol of the element with at no 119. 1

b) Why Cl has more negative electron gain enthalpy then F in group 17 ? 1

17. Arrange the species : F^-, O^-2, N^-3, Mg ^{+ 2}, Al ^{+ 3} and Na⁺ in the increasing order of ionic radii and give reason. 2

18. Deduce the structural formula of an alkene which on ozonolysls produces propanal and pentanone – 2. 2

19. a) What is Eutrophication ? 1

b) How can photochemical smog be controlled ? 1

c) Give an example of herbicide. 1

20. a) Why atomic radius of Ga is less then the of Al in group 13 ? 1

b) Why white fumes appear around a bottle of anhydrous AlCl₃ ? 1

c) Why Sn⁺² is a reducing agent but Pb⁺² is not ? 1

21. Determine the percentage of Nitrogen in an organic compound, 0.5g of which on kjeldalisation required 10ml of 1M. H₂SO₄ for complete neuteralisation of the ammonia produced. 3

OR

What is the percentage of sulphur in an organic compound 0.15g of which on subjecting to carius method of suphur estimation produced 0.5g of BaSO4

(Ba = 137, S = 32, O = 16) ? 3

22. a) Explain the structure of diborane by drawing a suitable diagram. 2

b) Why SiCl₄ gets hydrolysed but CCl₄ does not ? 1

23. a) Write a reaction by which BeCl₂ can be prepared. 1 b) Why solvay process can not be extended to manfacture K₂CO₃ ? 1

c) Why salts of Be can not be detected by flame test ? 1

24. a) Why hard water does not give lather with soap ? 1

b) Complete the reaction and balance it 1

Pbs + H₂O₂

c) How the presence of H^-ions be confirmed in Ionic hydrides 1

25. For a reaction , H and S are 30.56 KJmol^-1 and 66JK^-1 mol^-1 respectively calculate the temperature above which the reaction

would be spontaneous. 3

26. a) Why does the viscosity of a liquid decreases with increase in temp ? 1

B) What is the pressure exerted by 2 mole of a gas enclosed in a 100ml vessel at 27⁰C ? (Given R = 0.0821 lit atm mol^-1 K^-1) 2

27. a) Why bond angle is NH₃ is lower that in CH₄ even though the same hybridization is involved in both cases ? 2

b) Why H₂O is polar but CO₂ is non polar ? 1

28. a) Mention two limitations of Bohr’s Model of atom 2

b) Calculate the wavelength of an electron moving with a kinetic energy of

3×10^-25J (mass of electran = 9.8 x 10^-31Kg) 3

OR

a) Out at 3d and 4s sub shells which one would have lower

energy and why ? 2

b) What would be the frequency of radiation emitted when an electron moving within a hydrogen atom undergoes transition from fifth to second energy level? 3

29. a) Derive the relationship between k_p and k_c 3

b) The value of k_c for the reaction

2A = B +C is 2 x 10^-3. At a given time the composition of reaction mixture is [A] = [B] = [C] = 3 x 10^-4 M. In which directions will the reaction proceed? 2

OR

a) Derive the relationship between Ka and α of a weak c molor acid HX. 3

b) Calculate the pH of 0.01 M KOH assuming complete dissociation. 2

30. a) Why wurtz reaction is not considered to be a suitable method for preparing

alkanes with odd no. carbon atoms ?

b) Explain the eclipsed and staggered conformation of ethane by Newman’s projection formula. 1

c) Complete the reaction : 1

CH₃ – CH₂ – CH = CH₂ + HBr à

OR

a) Explain the term β – elimination with an example. 2

b) Draw the Geometrical isomers of but – 2 – ene and explain which one would be polar. 2

c) Complete the reaction :

OH

+ Zn