Model Sample Paper
Computer Application
Grade: X
Max.
Marks : 100
Board : ICSE Time : 2hr
________________________________________________________________________
SECTION
- A ( 40 Marks )
This
paper is divided into two sections.
Attempt
all questions from Section A and any four questions from Section B.
Q.1. (a)
How platform independency is achieved in java? [10]
(b)
Explain protected access specifier in java.
(c)
Write any two rules for naming variable.
(d)
What are the different parts of function ?
(e)
What are messages in java terms?
Q.2. (a)
Write the first line of class in Java called Product and define a boolean
method sale() as a [10]
member of the class
(b)
What are the main categories of data types in java?
(c)
How many operands does the ternary conditional operator take ?
(d)
Explain if-else-if construct with example.
(e) Give the
output of the following program code
int a =
10;
while (++a<20) {
if(a%3= = 0)
break;
System.out.println(a);
};
Q.3. (a) Differentiate
between formal and actual parameter [02]
(b) Write java
statements to perform the following tasks :
(i)
convert int type variable (y)
to float.
(ii)
check if a character (c) is a
space (blank) [02]
(c) State the
difference between compareTo() and equals() method. [02]
(d) Write a
statement to extract the last three characters of a word stored in the variable
wd. [02]
(e) What is the
use of the keyword import. [02]
Q.4.
(a) How does String class differ from StringBuffer class ? [02]
(b) Name the package that contains class System. [02]
(c) Determine errors in the following statements of Java programs and correct
them [03]
(i) int a[10] = {8,7,2,3,6,9};
(ii) String x =
(“JAVA” , ”BlueJ”);
(iii) char num[ ] = {2,3,4,5,6};
(d) What is the need of
implementing array concept in programming ? [03]
SECTION - B ( 60 Marks )
Attempt
any four questions from this Section.
The
answers in this Section should consist of the Program in BlueJ environment
with Java. Each program should be written using Variable description
Q.4. Write a program to find the sum of the
following series :
1 1 1
1*2*3 2*3*4 (n-2)*(n-1)*n
[15]
Q.5. Write a program to input category of a
person and compute his/her income tax belonging
to one of the following category :
Category Taxable Income (Rs.) Income
Tax (Rs.)
A below
or equal to 50000 Nil
B 50001
to 60000 10% of
(Income - 50000)
C 60001
to 150000 1000 + 15%
of (Income - 60000)
D above
150000 15000 +
20% of (Income - 150000)
[15]
Q.6. Write a program to print the following
format :
abcdef……..z
bcdef……z
cdef……z
def……z
.
.
.
xyz
yz
z
[15]
Q.7. Store the following numbers in two single
dimensional arrays :
A[ ] = 2,3,7,-8
B[ ] = 9,-1,-4,6
Write a program that merge A and B
arrays in a third array C as follows :
C[ ] = 2,9,3,-1,7,-4,-8,6 [15]
Q.8. Store final examination marks of 40
students in three subjects Maths , Science and Computer
Applications in array. Write a program in java to determine
the following :
(i)
Highest marks in Computer
Applications
(ii)
Average marks obtained by each
student [15]
Q.9. Write a program to enter a string and
convert its characters as given below:
B/b -> A/a , C/c -> B/b , …….., Z/z -> Y/y , A/a -> Z/z
1 -> 0 , 2 -> 1 , ……… , 9
-> 8 , 0 -> 9
blank (' ') -> $
Rest of the characters should not
change.
For example :
Input string :
I.C.S.E. Examination 2007
Output string : H.B.R.D.$Dwzlhmzshnm$1996 [15]
___________________________JJJJJJJ_________________________________
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