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Kerala (English Medium)->Plus 2 Computer Science Questions

Total Questions 323
What is the identity matrix of order 3*3?
IS JOHN DALTON THE REAL DEVOLOPER OF ATOMIC THEORY
WHO REALLY DISCOVERED PROTONS
WHY BENZALDEHYDE NOT KNOWN AS BENZANAL
Will diamond glitter if it is placed in a dark room,just after taking it from bright room?
WATS UR OPENION ABOUT ROSS DONAGON IN THE STORY AN IRISH ROSE ?
what is the 2's complemant of -57?
write a c++ program to check whether a string is palindrome or not using class without using flag?
concept of parallax method with a problem
please explain the use and working of command 'flag' in c++ briefly..
Please show how to Factorize this third degree equation: x^3+x^2+x+1
what is meant by disolution ?
We find the roots of a quadratic equation using the formula. Similarly,is there any formula to find roots of a third degree equation.?
Sir, I am making a c++ program to make a scientific calculator. For the basic addition I used an array b[80].So 80 values can be inputted and added.But the problem is that if I input 10 values only,the array is not complete and doesn't print the answer. For example, int b[80],s=0; for(i=0;i<80;i++) { cin>>b[i]; s=s+b[i]; } cout<<"sum="<<s; The following program only works if 80 values are inputted.But if I want to add just 3 values only,answer won't print because array is not full.Can a program be made to print the answer when we give only just 3 values as input but with still array size of 80.Just like a calculator works?
show that maximum area enclosed in a closed circle by a quadrilateral is of a square?
explain structure of glucose? label it too..
state Kohlrausche's law? what are its applications?
explain Young's double slit experiment ? obtain expression for band width too...
explain the working of simple microscope and compound microscope? draw its ray diagram too?
how many Hz is 1 MHz?