ICSE Computer Application - Class X - 2023 PYQ - Quiz

The Scanner class method used to accept words with space:

Anext()
BnextLine()
CNext()
DnextString()

The keyword used to call package in the program:

Aextends
Bexport
Cimport
Dpackage

What value will `Math.sqrt(Math.ceil(15.3))` return?

A16.0
B16
C4.0
D5.0

The absence of which statement leads to fall through situation in switch case statement?

Acontinue
Bbreak
Creturn
DSystem.exit(0)

The String class method to join two strings is:

Aconcat(String)
B.joint(string)
Cconcat(char)
DConcat()

The output of the function "COMPOSITION".substring(3, 6):

APOSI
BPOS
CMPO
DMPOS

int x = (int)32.8; is an example of ............... typecasting.

Aimplicit
Bautomatic
Cexplicit
Dcoercion

The code obtained after compilation is known as:

Asource code
Bobject code
Cmachine code
Djava byte code

Consider the following program segment and select the output of the same when n = 10 :


switch(n)
{
    case 10 : System.out.println(n*2); 
    case 4 : System.out.println(n*4); break; 
    default : System.out.println(n);
}

A20
40
B10
4
C20, 40
D10
10

The number of bits occupied by the value ‘a’ are:

A1 bit
B2 bits
C4 bits
D16 bits

Quiz Information

ICSE Computer Application - Class X - 2023 PYQ - Quiz

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Correct Answer:

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Q: The Scanner class method used to accept words with space:

A. next()
B. nextLine()
C. Next()
D. nextString()

Correct Option: B
Remarks:

Explanation:

nextLine()

Reason — nextLine() reads the input till the end of line so it can read a full sentence including spaces.

Q: The keyword used to call package in the program:

A. extends
B. export
C. import
D. package

Correct Option: C
Remarks:

Explanation:

import

Reason — import keyword is used to import built-in and user-defined packages into our Java program.

Q:
What value will `Math.sqrt(Math.ceil(15.3))` return?

A. 16.0
B. 16
C. 4.0
D. 5.0

Correct Option: C
Remarks:

Explanation:

4.0

Reason — Math.ceil method returns the smallest double value that is greater than or equal to the argument and Math.sqrt method returns the square root of its argument as a double value. Thus the given expression is evaluated as follows:

Math.sqrt(Math.ceil (15.3))
= Math.sqrt(16.0)
= 4.0

Q: The absence of which statement leads to fall through situation in switch case statement?

A. continue
B. break
C. return
D. System.exit(0)

Correct Option: B
Remarks:

Explanation:

break

Reason — The absence of break statement leads to fall through situation in switch case statement.

Q: The String class method to join two strings is:

A. concat(String)
B. <string>.joint(string)
C. concat(char)
D. Concat()

Correct Option: A
Remarks:

Explanation:

concat(String)

Reason — concat() method is used to join two strings. Its syntax is as follows:

String1.concat(String2)

Q: The output of the function "COMPOSITION".substring(3, 6):

A. POSI
B. POS
C. MPO
D. MPOS

Correct Option: B
Remarks:

Explanation:

POS

Reason — The substring() method returns a substring beginning from the startindex and extending to the character at endIndex - 1. Since a string index begins at 0, the character at index 3 is 'P' and the character at index 5 (6-1 = 5) is 'S'. Thus, "POS" is extracted.

Q: int x = (int)32.8; is an example of ............... typecasting.

A. implicit
B. automatic
C. explicit
D. coercion

Correct Option: C
Remarks:

Explanation:

explicit

Reason — In explicit type conversion, the data gets converted to a type as specified by the programmer. Here, the float value 32.8 is being converted to int type by the programmer, explicitly.

Q: The code obtained after compilation is known as:

A. source code
B. object code
C. machine code
D. java byte code

Correct Option: D
Remarks:

Explanation:

java byte code

Reason — Java compiler converts Java source code into an intermediate binary code called Bytecode after compilation.

Q: Consider the following program segment and select the output of the same when n = 10 :


switch(n)
{
    case 10 : System.out.println(n*2); 
    case 4 : System.out.println(n*4); break; 
    default : System.out.println(n);
}

A. 20<br />40
B. 10<br />4
C. 20, 40
D. 10<br />10

Correct Option: A
Remarks:

Explanation:

20
40

Reason — Since n = 10, case 10 will be executed. It prints 20 (10 * 2) on the screen. Since break statement is missing, the execution falls through to the next case. Case 4 prints 40 (10 * 4) on the screen. Now the control finds the break statement and the control comes out of the switch statement.

Q: The number of bits occupied by the value ‘a’ are:

A. 1 bit
B. 2 bits
C. 4 bits
D. 16 bits

Correct Option: D
Remarks:

Explanation:

16 bits

Reason — A char data type occupies 2 bytes in the memory.

1 byte = 8 bits
2 bytes = 8 * 2 = 16 bits

ICSE Computer Application - Class X - 2023 PYQ - Quiz

The Scanner class method used to accept words with space:

The keyword used to call package in the program:

What value will Math.sqrt(Math.ceil(15.3)) return?

The absence of which statement leads to fall through situation in switch case statement?

The String class method to join two strings is:

The output of the function "COMPOSITION".substring(3, 6):

int x = (int)32.8; is an example of ............... typecasting.

The code obtained after compilation is known as:

Consider the following program segment and select the output of the same when n = 10 : switch(n) { case 10 : System.out.println(n*2); case 4 : System.out.println(n*4); break; default : System.out.println(n); }

The number of bits occupied by the value ‘a’ are:

What value will `Math.sqrt(Math.ceil(15.3))` return?

Consider the following program segment and select the output of the same when n = 10 :