11th STD COMPUTER SCIENCE First Revision Test IMPORTANT QUESTIONS
2 MARKS
1. What is a computer?
2. Distinguish between data and information.
3. What is data?
4. Write the 1’s complement procedure.
5. Convert (46)10 into Binary number
6. We cannot find 1’s complement for (28)10. State reason.
7. List out any two uses of Operating System?
8. What is multi-user Operating system?
9. What is a GUI?
10. What are the parameters which influence the characteristics of a microprocessor?
12.What is an instruction?
13. Which source is used to erase the content of a EPROM
14. what is known as Multitasking?
15. What are called standard icons
16. Differentiate Files and Folders.
17. Differentiate Save and save As option.
18. How will you Rename a File?
19. Define an algorithm.
20. Distinguish between an algorithm and a process.
21. What is the difference between an algorithm and a program?
22. Why is function an abstraction?
23. How do we refine a statement?
24. What is an invariant?
25. Define a loop invariant.
26.Write a short note on const keyword with an example.
27. Why is char often treated as integer data type?
3 MARKS
1.What are the characteristics of a computer?
2. Write the applications of computer.
3.What is radix of a number system? Give example
4. Write note on binary number system.
5. Convert (150)10 into Binary, then convert that Binary number to Octal
6.Differentiate Computer Organisation from Computer Architecture.
7.Classify the microprocessor based on the size of the data.
8.Write down the classifications of microprocessors based on the instruction set.
9.Write a note on Recycle bin.
10.Write the two ways to create a new folder.
11.What is abstraction?
12.What is the format of the specification of an algorithm?
13. What is case analysis?
14. What are arithmetic operators in C++? Differentiate unary and binary arithmetic operators.
Give example for each of them.
15. How relational operators and logical operators are related to one another?
16. Evaluate the following C++ expressions where x, y, z are integers and m, n are floating
point numbers. The value of x = 5, y = 4 and m=2.5;
(i) n = x + y / x;
(ii) z = m * x + y;
(iii) z *= x * m + x;
5 MARKS
1. Discuss the various generations of computers.
2. a) Write the procedure to convert fractional Decimal to Binary
b) Convert (98.46)10 to Binary
3. Find 1’s Complement and 2’s Complement for the following Decimal number
a) -98 b) -135
4. Explain the characteristics of a microprocessor
5. Explain the types of ROM.
6.. Write the specification of an algorithm hypotenuse whose inputs are the lengths of the two shorter sides of a right angled triangle, and the output is the length of the third side.
7. Suppose you want to solve the quadratic equation ax2 + bx + c = 0 by an algorithm.
quadratic_solve (a, b, c)
-- inputs : ?
-- outputs: ?
8. Exchange the contents: Given two glasses marked A and B. Glass A is full of apple
drink and glass B is full of grape drink. For exchanging the contents of glasses A and B,represent the state by suitable variables, and write the specification of the algorithm.
9. Write about Binary operators used in C++.
10. What are the types of Errors?