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Wednesday, 7 November 2012

Previous year C.B.S.E Chemistry question papers for class 12th

This is the hub of C.B.S.E Chemistry previous year question papers. Download C.B.S.E 12th board question paper for the year 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 with Chemistry Syllabus to practice more for Chemistry solutions.

CHEMISTRY SYLLABUS FOR CBSE 12TH

Syllabus 12th chemistry.pdf

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CHEMISTRY 2005

12th 2005 Chemistry 1.pdf

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CHEMISTRY 2006

12th 2006 Chemistry 1.pdf

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CHEMISTRY 2007

12th 2007 chemistry 1.pdf

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CHEMISTRY 2008

12th 2008 chemistry 1.pdf

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CHEMISTRY 2009

cbse 12th del 2009 chemistry .pdf

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CHEMISTRY 2010

chemistry 12th .pdf

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CHEMISTRY 2011

CBSE 12th chemistry theory.pdf

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CBSE 12th LAST YEAR QUESTION PAPERS

This is the hub of previous year question paper for class 12th CBSE Board Examination. Download CBSE 12th previous year question papers for Accountancy, Business Studies, Biology, Chemistry, Computer Science, Economics, English, Geography,Hindi, History, Information practices, Maths, Multimedia and Web Technology, Physics, Physical Education, Psychology, Political Science, Sociology. Get CBSE Question Papers and Sample Papers.

PHYSICS SYLLABUS FOR CBSE CLASS 12TH

Syllabus 12 physics.pdf

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PHYSICS 2005

12th 2005 physics 1.pdf

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PHYSICS 2006

12th 2006 physics 1.pdf

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PHYSICS 2007

12th 2007 physics 1.pdf

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PHYSCICS 2009

cbse 12th del 2009 phy.pdf

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PHYSICS 2010

CBSE 12th Physics 2.pdf

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PHYSICS 2011

physics theory.pdf

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Sunday, 16 September 2012

Random collection of Physics Viva Questions

State the Principle of a potentiometer. (The students say that potential drop is proportional to length but the constant quantities are not mentioned)
How can we increase the sensitivity of a potentiometer?
Define figure of merit of a galvanometer.
Which has more resistance – a galvanometer or a milliammeter?
How does an LED emit light?
What is the difference between an ordinary diode and an LED?
Define principal axis of a convex lens?
What happens to the focal length of a concave mirror if it is immersed in water?
What are the factors affecting the internal resistance of a cell?
What are the difference between primary and secondary cell?
Why can’t we use a dry cell for starting a car?
What happens to the resistivity of a wire when it is doublefolded?
How does the resistance of a wire depend on its dimensions?
Why are the resistances used in a resistance box is like 1,2,2,5,10,20,20,50,100,200,200,500,1000,2000,2000,5000 etc?
Why constantan or manganin wires are used for making the resistance coils in resistance box?
What is a standard resistance?
What are the characteristics of a standard resistance?
What are the precautions to be observed while doing electricity experiments in general?
What is a galvanometer?
What is the resistance of an ideal ammeter?
Why is ammeter always connected in series and voltmeter always connected in parallel?
How can we convert a galvanometer into an ammeter or a voltmeter?
What is shunt?
What is AVO meter?
What is the effect of temperature on the resistance of a conductor?
Why does the resistance of a conductor increases with temperature, whereas that of a semiconductor decreases with temperature.
What is conductance?
What are non ohmic devices? give an example.
What are superconductors?
Define emf
Why emf is said to be a misnomer?
What happens if the battery used in the primary circuit of a potentiometer has less emf compared to the emf of the cell used in the secondary circuit?
If you find that the galvanometer reading is shaky, what error can you expect?
What do you mean by figure of merit of a galvanometer?
Why a moving coil galvanometer is called so?
What is the principle of a galvanometer?

CHAPTERWISE REVISION QUESTIONS FOR CBSE CLASS XII

CHAPTERWISE REVISION QUESTIONS FOR CBSE CLASS XII