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CBSE->Plus 2 Computer Science Questions

Total Questions 120
Q4.Using Gauss theorem,show mathematically that,for any point outside the shell,the electric field due to an uniformly charged thin spherical shell is the same as if the entire charge of the shell is concentrated at its center.Why do you expect the electric field inside the shell to be zero according to this theorem??
Q3.An electric dipole is held in uniform electric field I.Using suitable diagram show that,it doesn't undergo translatory motion and derive an expression for the torque acting on it and specify its direction.
Q2.Three point charges of +2 micro coulomb,-3 micro coulomb and -3 micro coulomb are kept at the vertices A,B & C respectively of an equilateral triangle of side 20 cm.What should be the sign and magnitude of the charge to be placed at the midpoint ,m of side BC ,so that the charge at A remains at equilibrium.
Q1.Using Gauss law establish that the magnitude of electric field intensity at a point due to an infinite plane,with uniform charge density (omega) is independent of the distance of the field point. (plz answer this query as soon as possible...plz)
who created computer virus called i love u? can u display its script? any kid below age of 18 had any virus or not.explain please??
WHAT IS INTEGRATION AND CALCULUS??
WHAT ARE DETERMINANTS??
WHAT IS catenation OF CARBON?
HOW TO GIVE COMMON NAMES FOR THE ORGANIC COMPOUNDS??
what are computer virus?what are the most dangerous viruses(atleast five and some explanation about them)?which is the best anti virus in world(any five)?
convert- a)ethyne to bromo ethane b)1-bromopropane to 2-bromopropane
explain the following a)pbcl4 is less stable than SnCl4 b)boric acid is monobasic non protic acid c)SnCL4 is good reducing agent d)BCl3 is better lewis acid than BF3 e)co2 is gas while silica is solid
how is hydrogen peroxide used to restore the original colour of old lead paintings?give an chemical equation to show that it acts as both oxidising and reducing agents????
how to balance an equation with oxidation no. method and half reaction method?? step by step explain please???
what is common ion effect?
WHAT IS TRIGONOMETRIC EQUATIONS?GENERAL FORMULA AND SUCH THINGS RELATED TO IT??AND WHAT IS MEANT BY INVERSE OF TRIGONOMETRIC EQUATIONS??
WHETHER THERE IS ANY EASY WAY TO STUDY IUPAC NOMENCLATURE OF ORGANIC COMPOUNDS??
can u give an example of a program in c++ which checks system date and activates on particular date???
how to create a program in c++ which activates on particular date?
how to find log and anti-log ?full procedure???