Computer Applications Jan 09

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(Two Hours)

Guess Paper – 2009 Class – X Subject – COMPUTER APPLICATIONS

[M.M. 100]

The paper will be divided into two sections. ALL questions in section A are compulsory and any FOUR questions in Section B. The intended marks for questions are given in brackets[ ]

SECTION A [40 Marks] Attempt ALL questions Question 1. What is method. Explain with example What is character stream ? Explain the usage of Final. Give example of continue and break in switch –case.

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Question 2. a) Differentiate between Statement and Block. b) Define bytecode c) Evaluate if a=12 (a++)+(a--);

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Question 3. a) What is try-catch in java. (2) b) Write a syntax of conditional operator. (2) c) Explain the concept of Math class in Java. d) What is difference between bubble sort and selection sort. Question 4. 1. Distinguish inheritance and polymorphism with example. 2. What is array of objects ? Explain. 3. Explain exception handling in java.

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SECTION B [60 Marks] Answer any FOUR questions in this section. Each program should be written in such a way that it clearly depicts the logic of the problem. This should be achieved by using mnemonics and comments in the program. Give the variable list used in the program. Flowcharts and algorithms not required.

Question 5. 1. Write a program to print fibbonacci series till n terms using recursion function. (15) Question 6: a) Write a program to print : 1. String in reverse 2. Whether entered string is palindrome or not 3. print the first character of that string at last For eg. “deep”->eepd “b”-> b ------------------------------------------------------------------------------------------------------www.icseguess.com Other Educational Portals www.cbseguess.com | www.ignouguess.com | www.dulife.com | www.magicsense.com

(15)

http://www.icseguess.com/ “dv”->vd

Question 7. Write a menu driven program through which user can calculate and print the sum, difference & product of two matrices (7) Question 8. a) Write a class to enter three numbers in a function numb( ). And print the numbers entered if it is possible that the addition of any two numbers give third number For eg. numb(3,4,7) -> here 3+4=7 numb(8,5,3) -> 5+3=8 numb(8,10,2) -> 8+2=10 b) Write a program to print “Hello (name)” until user press “y” or “Y” else quit. (8)

Name Mrs. Deepali Bakshi Email Id [email protected] Telephone No. 9347004266

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