Sample paper 2 for ICSE computer Application class X

Sample paper 2 for ICSE computer Application class X

SUB: COMPUTER                         FOR CLASS X                                   MARKS: 100

 PART I (40 marks)

Question 1                                                                                                       [2 X 5=10]

1.      Define encapsulation?                                                                                     

2.      Explain the term object with example?                                                           
3.      Define identifier with example; mention 2 naming rules for identifier?       

4.      What are wrapper classes? Give 2 examples?                                                 

5.      What is the purpose of new keyword?                                                            

Question 2                                                                                                                 [10]

1.      Differentiate two kinds of data types?                                                            [2]

2.      Write mathematical operations for corresponding expression?                      [2]

a.      a2+b2

b.      z=√(x²+y²-x/z)

3.      Define recursive function?                                                                             [2]

4.      Identify keywords, identifiers, literals,& comments from the                  [4]

following code

// example class definition to demonstrate usage of ternary operator

public class ternary{

public void work(){

byte a=10;

int b=20,c;

c=(a>b)?a:b;

System.out.println(“value of c=”+c);}}

Question 3                                                                                                                 [20]

1.      Explain the term type casting?                                                                   [2]

2.      Explain what is the job of return key word?                                              [2]

3.      Define function overloading?                                                                    [2]

4.      What is default constructor, and parameterized constructor?                    [2]

5.      Differentiate between constructor and method                                          [2]

6.      Explain 4 OOP principles?                                                                        [4]

7.      Write output of the following?                                                                  [2]

a.      if x=7,y=2;

                                                              i.      x>>=y

                                                            ii.      x<<=--y;

System.out.println(“value of x=”+x);

System.out.println(“value of y=”+y);

8.      Identify (class name, object name, constructor and parameter from the following)

a.      Calculator op=new Calculator(10,20);                                           [2]

9.      find the output of the following program                                                  [2]

a.      int val=500,n=550;

int sum=(n+va)l>1750?400:200;

System.out.println(sum);

b.      int val=1600,n=550;

int sum=(n+val)>1750?400:200;

System.out.println(sum);

  

 PART II (60 marks)

Question 4                                                                                                                 [15]

Write a program to solve 2 series as follows using 2 different functions as mentioned

      a.      double seires(int n)  to solve the series                                                     [8]

   S=a/1+a/2+a/3+a/4--------- a/n

      b.      void series1(int n) to solve the series

  0,3,8,15,24------ n                                                                                          [7]

Question 5                                                                                                                 [15]

        a.      Write an OOP for class volume which has 3 functions for finding volume of three shapes i.e. circle, rectangle, square, this should be done using functions having parameters and no return type.                                                                                      [7]

       b.   Write an OOP for class convert, using functions having both parameters & return type. First function is for converting distance from CM to Feet and second function is for converting KM to Miles.                                                                            [8]

Question 6                                                                                                                 [15]

Define a class student having the following description

Data members

String name-> to store name

Int roll-> to store roll no.

Int p,c,b-> to store physics, chemistry ,bio marks

Double s-> to store percentage of science marks

Member function

void Input()-> to input details of student

void Calculate()-> to calculate percentage science & marks,

void Display()-> to display name,rollno,percentage having message that the student is a ranker if the percentage is >80

Question 7                                                                                                                 [15]

Write a program that has a method integerPower (base, exponent) that returns the value of base exponent
For example, integerPower (3, 4) calculates 34 (or 3 * 3 * 3 * 3). Assume that exponent is a positive, nonzero integer and that base is an integer. The method should use a for or while loop to control the calculation. Do not use any math-library methods.

Question 8                                                                                                                 [15]

A cloth show room has announced the following festival discounts on purchase of items, based in the total cost of items purchased

Purchase	Discount%
<Rs.2000	5%
Between Rs.2001 & 5000	25%
Between Rs.5001 & 10000	35%
Above Rs.10001	50%

Write a program to input total purchase, compute and display the amount to be paid after availing discount. (use any type of user define function)

Question 9                                                                                                                 [15]

Write a program using Predefine Math functions to find answers for the following.

1.      Find maximum number between two inputted numbers

2.      Absolute value of a given number

3.      Square root of a given number

4.      Cube of given number.

The above answers should be solved in a user define function called Mathematics.