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ICSE Class X Prelims 2026 : Computer Applications (St. Augustine's Day School, Kolkata)

7 pages, 38 questions, 1 questions with responses, 1 total responses,

Shilpan Dutta
The Assembly of God Church School (AGC), Kolkata

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ST.AUGUSTINE S DAY SCHOOL, KOLKATA SELECTION EXAMINATION (2025-2026) CLASS - X SUBJECT- COMPUTER APPLICATIONS Maximum Marks: 100 Time allowed: Two hours Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper. The time given at the head of this Paper is the time allowed for writing the answers. This Paper is divided into two Sections. Attempt all questions from Section A and any four from Section B The intended marks for questions or parts of questions are given in brackets [ ] SECTION-A (Attempt all questions from this Section.) Questions 1: [20] Choose the correct answers to the questions from the given options. (Do not copy the questions, write the correct answers only.) i) Polygon Consider the above picture and choose the correct statement from the following a) Polygon is the object and the pictures are classes. b) Both polygon and the pictures are classes. c) Polygon is the class and the pictures are objects. d) Both polygon and pictures are objects. 1 ii) The output of the statement CONCENTRATE . indexOf( T ); is a) 9 b) 7 c) 6 d) -1 iii) ) The output of the statement TALENT . compareTo( GENIUS ); is a) 11 b) -11 c) 13 d) 0 iv) The extension of a Java source code file is a) .exe b) .obj c) . jvm d) . java v) What is the output of Math.sqrt(Math.ceil(24.5)) ? a) 6.0 b) 5.0 c) 5 d) 6 vi) What will be the output of the following code? String s= 5 ; int t=Integer.valueOf(s); t=t+1000; System.out.println(t); a) 1009 b) 1005 c) 1000 d) 1050 vii) The class from which properties are inherited is called : a) Sub class b) Derived class c) Child class d) Base class viii) __________ means repetition of a set of statements, depending upon a condition test. a) Jump . b) Control. c) Iteration. d) Selection. 2 ix) What is the output of the following code ? double x=3.7, y=3.3 ; System.out.println(Math.min( Math.floor(x) ,y)) ; a) 3.3 . b) 3.7 c) 3.0 d) 4.0 x) Which of the following data type cannot be used with the switch-case statement ? a) int . b) char . c) double . d) None of these. xi) If the name of the class is Green , what can be the possible name for its constructor? a) GREEN. b) Gr. c) Green. d) None of these. xii) Invoking a method by passing the objects of a class is termed as a) Call by reference. b) Call by value . c) Call by method. d) None of these. xiii) The correct statement to create an object named mango of the class fruit a) Fruit Mango=new Fruit( ); b) fruit mango= new fruit( ); c) Mango fruit=new Mango( ); d) fruit mango=new mango( ); xiv) Which of the following keyword is used to allocate memory space for an object ? a) new . b) for . c) while . d) int . xv) The size of long data type is a) 16 bits. b) 32 bits. c) 64 bits. d) 8 bits. 3 xvi) Which of the following is an invalid class name in Java ? a) Myclass b) _Myclass c) Myclass_5 d) 6Myclass xvii) What is the output of Math.cbrt(64) ? a) 5.0 b) 4 c) 4.0 d) 3.0 xviii) Which of the following is an escape sequence character in Java? a) \n . b) /n. c) //n d) None of these xix) Which of the following operator works on three operands ? a) Unary . b) Binary. c) Ternary. d) None of these. xx) If x=6, the statement y=++x +8 evaluates to: a) y=14 b) y=15 c) y=16 d) y=12 Questions2: [2] i) Write Java expression for x- y x 2+y 2 ii) Evaluate the following expression int x=5; int y=x++ + ++x +x; System.out.println(y); [2] iii) Convert the following if-else-if construct into switch-case statement int v; if(v==1) System.out.println( Best ); [2] if(v==2) System.out.println( Better ); if(v==3) System.out.println( Good ); 4 iv) Rewrite the following using ternary operator double dis; if(bill>10000) dis=bill*10.0/100; else dis=bill*5.0/100; [2] v) Define Encapsulation. [2] vi) Predict the output of the following code String a= Smartphone ; String b= Graphic Art ; String g=a.substring(2, 5); String h=b.substring(8).toUpperCase( ) ; System.out.println( g= +g); System.out.println( h= +h); vii) Convert the following for loop to while loop. int i, s=0; for(i=1; i<=20; i++) { s=s+i, } [2] viii)The following code snippet contains some errors. Rewrite the following code after removing all errors. [2] public void main( string Args[ ] ) { int n=5; For(i=1; i<=n; n ++ ) { System.out.println( i) ; } } ix) ) Predict the output of the following program segment int n[ ]={ 1,2,3,5,7,9, 13,16}; double a= Math.pow(n[4], n[ 1] ) ; double b= Math.sqrt(n[5]+ n[ 7] ) ; System.out.println( a= +a); System.out.println( b= +b); [2] x) Predict the output of the following program segment String s1 = ALLAHABAD ; int x= s1.indexOf( A ) ; int y= = s1.lastIndexOf( A ) ; System.out.println( x= +x); System.out.println( y= +y); [2] 5 SECTION-B ( Answer any four questions from this Section) The answer in this section should consist of the programs in either Blue J environment or any program environment with Java as the base. Each program should be written using variable description /mnemonic codes so that the logic of the program is clearly depicted. Flowcharts and algorithm are not required Questions 3: [15] A paper manufacturing factory has revised the salary scale of its employees depending on the number of years of service . Input the number of years of service and the current salary. Calculate and display the revised amount, an employee will get as salary, on the given following rate of increment. Years of service (y) Rate of increament(r) y<5 5% of salary(s) y<10 and y>=5 8% of salary(s) Y<15and y>=10 10% of salary(s) Otherwise 11% of salary(s) Questions 4: Using switch-case statement, write a menu driven program for the following If the user enters 1 ,it will display the following pattern: 12 345 1234 123 12 1 If the user enters 2 , it will calculate and print the sum of the following series : x +x2/2 + x3/3+x4/4+x5/5+ ..+xn/n [15] Questions 5: [15] Write a program to input a number and check and print whether it is an Armstrong number or not. A number is said to be an Armstrong number if the cube sum of all digits is equal to the number. Ex : I/p =153 , 153=13+53+33. o/p = 153 is an Armstrong number Questions 6: [15] Write a program to input elements in a 2d-array of size 4 x 4 and print its left diagonal elements and sum of left diagonal elements. Ex : 11 22 33 44 10 20 30 21 19 25 28 60 15 12 17 14 Left diagonal elements are : 11,20,28,14. Sum of the left diagonal elements =73 6 Questions 7: Write a program to input a string and it will print the length of the string and also check and print whether it is a palindrome string or not. [15] A string is said to be palindrome if the original string is equal to its reverse form. Ex :- I/P= MADAM O/P = Length of the string is 5 It is a palindrome string. Questions 8: [15] Define a class Mobike with the following description : Instance variable /data members int bno- To store the bike s number. String nm - To store the name of the customer. int days - To store the number of days the bike is taken on rent. int charge To compute and store the rental charge. Member methods void input( ) To input and store the details of the customer. void compute( ) To compute the rental charge. The rent of the mobike is charged on the following basis : Days First 5 days Next 5 days Rest of the days Rent charged Rs 500 per day Rs 400 per day Rs 200 per day void display( ) To display the details. Write a main method to create an object of the class and call the above member methods. ___________________________________________________ 7

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