(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Define a class to accept a number from user and check if it is an EvenPal number or not. (The number is said to be EvenPal number when number is palindrome number (a number is palindrome if it is equal to its reverse) and sum of its digits is an even number.)

Example: 121 - is a palindrome number

Sum of the digits - 1 + 2 + 1 = 4 which is an even number

Define a class to accept values into an integer array of order 4 x 4 and check whether it is a DIAGONAL array or not An array is DIAGONAL if the sum of the left diagonal elements equals the sum of the right diagonal elements. Print the appropriate message.

Example:

3 4 2 5   Sum of the left diagonal elements =

2 5 2 3   3 + 5 + 2 + 1 = 11

5 3 2 7   Sum of the right diagonal elements =

1 3 7 1   5 + 2 + 3 + 1 = 11

Define a class to accept the gmail id and check for its validity.

A gmail id is valid only if it has:

→ @

→ . (dot)

→ gmail

→ com

Example: [email protected] is a valid gmail id.

Consider the array given below:

char ch[]={'A','E','I','O','U'};

Write the output of the following statements:

System.out.println(ch[0]*2);;

To execute a loop 10 times, which of the following is correct?

How many times will the following loop execute? Write the output of the code:

int x=10;
while(true) {
System.out.println(x++*2);
if(x%3==0)
break;
}

Write the output of the following String methods:

String x="Galaxy",y="Games";
(a)  System.out.println(x.charAt(0)==y.charAt(0));
(b)  System.out.println(x.compareTo(y));

Write the output for the following :

String s1 = “phoenix”; String s2 =”island”;

System.out.prindn (s1.substring(0).concat (s2.substring(2)));

System.out.println(s2.toUpperCase( ));

String x[ ] = {“Artificial intelligence”, “IOT”, “Machine learning”, “Big data”};
Give the output of the following statements:

(i) System.out.prindn(x[3]);
(ii) System.out.prindn(x.length);

Write a program to input a sentence and convert it into uppercase and count and display the total number of words starting with a letter ‘A’.

Example:
Sample Input: ADVANCEMENT AND APPLICATION OF INFORMATION TECHNOLOGY ARE EVER CHANGING.
Sample Output: Total number of words starting with letter A’ = 4.

A tech number has even number of digits. If the number is split in two equal halves, then the square of sum of these halves is equal to the number itself. Write a program to generate and print all four-digit tech numbers.

Example :
Consider the number 3025
Square of sum of the halves of 3025 = (30+25)²
= (55)²
= 3025 is a tech number.

String x[] = {“SAMSUNG”, “NOKIA”, “SONY”, “MICROMAX”, “BLACKBERRY”};

Give the output of the following statements:

1. System.out.println(x[1]);
2. System.out.println(x[3].length()); 

Differentiate between constructor and function.

Write the output for the following :

String s= “Today is Test”;
System.out.println(s.indexOf(‘T’)); System.out.println(s.substring(0, 7) + ” ” + “Holiday”);

Define Encapsulation.

 Define abstraction.

What is the function of catch block in exception handling? Where does it appear in a program?

State the output when the following program segment is executed:

String a = "Smartphone", b = "Graphic Art"; 
String h = a.substring(2, 5); 
String k = b.substring(S).toUpperCase(); 
System.out.println(h); 
System.out.println(k.equalsignoreCase(h)); 

Write the output for the following :

System.out.printIn(“Incredible” + “\n” + “world”);

If int y = 10 then find int z = (++y * (y++ +5));