icse - kopykitab
TRANSCRIPT
CLASS 10
ICSE
Strictly based on the latest ICSE Curriculum
OSWAAL BOOKSLEARNING MADE SIMPLE
COMPUTERAPPLICATIONS
QUESTION BANK
Includes :l Solved Board Question Paper of 2018 Examl Solved Board Question Paper - 2017 with Marking Scheme issued by Boardl Handwritten Toppers' Answers Sheetl Previous Years Solved Papers upto 2018l Topics and Concepts found Confusing & Difcult by Studentsl Suggestions for Studentsl Board's Examiners' Commentsl Answering Tips
For2019Exam
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CONTENTS
( 3 )
l Latest Syllabus issued by CISCE for Academic Year 2018 –19 9 - 10
l ICSE Solved Paper – 2018 11 - 19
l ICSE Solved Paper 2017, with Marking Scheme (Qualitative Analysis) – ,
issued by CISCE Board 20 - 32
l Handwritten T opper's Answers Sheet – 2017 33 - 40
1. Revision of Class-IX Syllabus 1 - 14
2. Class as the Basis of All Computation 15 - 21
3. Constructors 22 - 24
4. Functions 25 - 33
5. Class as a User Defined Type 34 - 36
6. Iterations 37 - 42
7. Using Library Classes 43 - 48
8. Encapsulation 49 - 53
9. Arrays 54 - 59
10. Input/Output 60 - 63
( 4 )
Information in this section is sourced from various available sources. Though all efforts have been made to make
sure it is trustworthy, Oswaal Books shall not be responsible for mistakes, if any.
24 February, 1955 - 5 October, 2011Entrepreneur, Businessman, Inventor, Industrial Designer
Steve JobsSteve JobsSteve Jobs
Steve Paul Jobs was born in San Francisco, California to Joanne Schieble and Abdulfattah 'John'
Jandali who gave him up for adoption. Smart but directionless, Jobs experimented with different
pursuits before starting Apple Computer with Steve Wozniak in 1976. Apple's revolutionary products,
which include the iPod, iPhone and iPad, are now seen as dictating the evolution of modern
technology. He died in 2011, following a long battle with pancreatic cancer.
Steve skipped sixth grade altogether, and his teachers even considered having
him bypass seventh grade, too.
When Jobs was 12, HP founder Bill Hewlett offered him a summer job after Steve
called him asking for parts for an electronic project.
Apple was co-founded by Steve jobs and his college dropout friend, Steve
Wozniak, in Steve’s family garage.
Jobs called the former VP of Google, Vic Gundotra, and told him that second 'O' in
Google had the wrong shade of yellow and that he was going to fix it. Evidently,
Steve had incredible attention to detail.
Walter Issacson’s biography of Steve Jobs reveals that he was fond of eating
carrots and apples and could live on these two for days on end.
( 5 )
PREFACEThe Indian Certificate of Secondary Education Examination conducts examination, in accordance with
the recommendations of the New Education Policy 1986, through the medium of English.
The Council for the Indian School Certificate Examinations is committed to serving the nation's
children, through high quality educational endeavours, with a commitment to excellence.
Excellence is a continuous process and not an accident! - A.P. J. ABDUL KALAAM
With an increasing number of new technologies and an expanding global population, being an
autodidact, or self-teacher, has become increasingly crucial to achieve excellence. In order to aid the
students in this task, Oswaal Books has designed this book which will surely cater to their needs.
The unique character of this book is that it ensures an in-depth; and not merely superficial learning of
ICSE topics. The remarkable feature is the inclusion of Answering Tips and Examiner's Comments at the
end of every question, which will empower the students to comprehend their mistakes and rectify
them.
Questions incorporated in this book follow the syllabus, pattern and marking guidelines of the Council
to guide the candidates to answer with precision. This will help students to get familiar with the
examination techniques.
This book would not have taken shape without the support of our authors and editors. We would like to
extend our heartfelt gratitude to them. There is always a scope of improvement and any constructive
suggestion will be heartily considered. Together we can make this book stand in the category as 'One of
the Best'. Wish you Happy Learning!
-Team Oswaal
Topics/Concepts found Difficult or Confusing
( 6 )
Examination Paper 2017l Data types and their sizesl Calculation of bill amount and surcharge l Output of program code using nested loopl Invoking functions with objectl Sorting stringsl Classification of operatorsl Objects and instance of a classl Concatenation of strings and spaces using l '+' operator •Sorting techniquesl Usage of library function, substring () and Math.min()l Output of program code using nested loopl Index of an arrayl print()/println()l next()/nextLine()l Converting numeric string into an integer value
Examination Paper 2016l Conversion of if() to ternary operator l Parametrized constructor l Typecasting l Finding, how many number of times body of the loop gets executed l Types of errors l Nested loop l String functions l Series Programs l Function overloading
Examination Paper 2015l Default value of floatl Working of ternary operatorl Wrapper classesl Output question using different library functionsl Default values of primitive data typesl Evaluation of an expression containing prefix and postfix operatorsl Use of switch...case and defaultl Arranging names in descending orderl Calculation of billl Use of nested loop
Examination Paper 2014l Multi-line comments, escape sequences, default values of data typesl Precedence of operatorsl Identifying variables of different data types and types of statementsl Multiple / nested Mathematical and String functionsl Nested Loopsl Static/ non-static variablesl Conversion of algebraic expressions to Java expressionsl Syntax of switch-case and array declaration and initialization
( 7 )
Suggestions for the Students
ð Utilize the reading time to clearly understand the nature of the question.
ð All definitions should be understood and learnt.
ð Try to understand the question asked.
ð Practice questions based on output finding programs.
ð Do not study definition of terms and their related examples as separate from problem solving techniques.
ð Concepts should be applied in the program for better understanding.
ð Apply simple logic in a program to get the desired output.
ð Do not memorize the program, try to understand the logic.
ð Use Mnemonic variables and comments to explain the programs.
ð Apart from text book learning, look up other reliable resources to gather comprehensive knowledge of the subject.
ð Attempt all questions in Section A.
ð Read the question carefully before answering.
ð Practice programs on the Computer.
ð A good variable description containing a list of important variables used in the
program along with their data types and purpose must be given at the end of every
program.
ð Project work should be done independently to reinforce all concepts.
ð Do not write meaningless words like SOP, SOPLN, PSVM etc. for System.out.print,
System.out.println, public static void main.
ð Solve exercises based on various operators and inbuilt functions.
ð Section A is compulsory and hence all question must be attempted.
ð If a proper definition does not come to mind then explain the term with suitable
example.
ð Do not forget to write comment lines or description of variables and use mnemonic
names.
ð Dry run each program before trying it on the computer.
ð Try to understand the question asked by reading it carefully.
ð Each concept should be understood instead of rote learning.
ð If a definition does not come to mind, write an accurate example to illustrate the
concept.
ð Learn the correct use of all statements so that syntax errors can be eliminated.
ð Computer Applications is a logic based subject like Mathematics and highly scoring in
nature. It needs to be given time of self-study revision and practice at least 3 times a
week for a duration of ½ an hour each day followed by a complete review of week’s
work during the week end. Do not leave this subject to be studied on the eve of the
examination.
ð All exercises, general and Programming to be maintained in a register and revised
during exam preparation.
ð Syntax of each element of Java to be thoroughly studied.
ð At the time of answering, every question must be read at least twice before
answering.
ð All programs must be written with suitable comments – whether in class or during
exam.
( 8 )
LATEST SYLLABUS
Computer ApplicationsCLASS 10
There will be one written paper of two hours duration carrying 100 marks and Internal Assessment of 100 marks.
The paper will be divided into two sections A and B.
Section A (Compulsory – 40 marks) will consist of compulsory short answer questions covering the entire syllabus.
Section B (60 marks) will consist of questions which will require detailed answers and there will be a choice of questions in this section
THEORY – 100 Marks1. Revision of Class IX Syllabus (i) Elementary Concept of Objects and Classes. (ii) Values and types. (iii) Conditionals and non-nested loops.2. Class as the Basis of all Computation Objects and Classes Objects encapsulate state and behaviour – numerous
examples; member variables; attributes or features. Variables define state; member functions; Operations/methods/ messages/ functions define behaviour.
Classes as abstractions for sets of objects; class as an object factory; concept of type, primitive data types, composite data types. Variable declarations for both types; difference between the two types. Objects as instances of a class. Consider real life examples for explaining the concept of class and object.
3. Constructors Constructor and its types. Default constructor, parameterized constructor,
constructor with default parameter and constructor overloading.
4. Functions Functions and its types Need of functions. Types of functions (pure and impure).
Function declaration and definition, ways of calling functions (call by value and call by reference) Returning information/messages from the functions and use of multiple functions and more than one function with the same name (function overloading). Use of static data member with static member function.
Discuss invocation of functions on objects (through the reference). Discuss the concept of this with a reference to the object on which the invocation is made again.
5. Class as a User Defined Type
Class as a composite type, distinction between primitive type and composite or class types.
Class may be considered as a new data type created by the user, that has its own functionality.
The distinction between primitive and composite types should be discussed through examples. Show how classes allow user defined types in programs. All primitive types have corresponding class wrappers.
The following methods are to be covered: int parseInt(String s), int valueOf(String s), long parseLong(String s), long valueOf(String s), float parseFloat(String s), float valueOf(String s), double parseDouble(String s), double valueOf(String s), boolean isDigit(char ch), boolean isLetter(char ch), boolean isLetterOrDigit(char ch), boolean isLowerCase(char ch), boolean isUpperCase(char ch), boolean isWhitespace(char ch), char to LowerCase (char ch) char to UpperCase(char ch)6. Iterations Loops, nested loops, break and continue. Revision of loops (while, do while and for). Show how each kind of loop can be converted to the
other form of the loop. Introduce nested loops through some simple examples. Demonstrate break and continue statements with the help of loops/nested loops.
7. Using Library Classes
Simple input/output. String, packages and import statements.
Browsing the documentation for classes in the libraries and illustrating their use. The following functions have to be covered:
String library functions: Char charAt (int n) int compareTo(String1, String2) String concat(String str) boolean endsWith(String str) boolean equals(String str) boolean equalsIgnoreCase(String str) int indexOf(char ch) int lastIndexOf(char ch) int length( ) String replace (char oldChar,char newChar) boolean startsWith(String str) String substring(int beginIndex, int endIndex) String toLowerCase( ) String toUpperCase( )
( 9 )
String trim( ) String valueOf(all types) Mathematical Library Functions: pow(x,y), log(x), sqrt(x), ceil(x), floor(x), rint(x),
abs(a), max(a, b), min(a,b), random( ), sin(x), cos(x), tan(x).
Introduce the concept of packages and import statement (Avoid discussing the details of libraries).
8. Encapsulation
Accessspecifiersandscopeandvisibility
Access specifiers – private and public. Visibility rules for private, package and public access specifiers. Scope of variables, instance variables, argument variables, local variables.
9. Arrays
Arrays –storing, retrieving and arranging data
Arrays and their uses, sorting algorithms - selection sort and bubble sort; Search algorithms – linear search and binary search Example of a composite type. Array creation. Sorting and searching algorithms should be discussed (single dimensional array only).
10. Input/Output
Basic input/output using Scanner and Printer classes from JDK.
The Scanner class can be used for input of various types of data (e.g. int, float, char etc.) from the standard input stream.
INTERNAL ASSESSMENT - 100 Marks
Assignments and Project
The students should complete a number of laboratory assignments during the whole year to reinforce the concepts studied in the class.The students should build one real life project using the concepts taught.Suggested list of Assignments :
Good assignments should have problems which require design, invention of an algorithm and only then implementation and testing. The problems will mimic a real life problem and require careful design or will require an interesting algorithm to solve it. They should also embody one or more concepts that have been discussedinthetheoryclass.Asignificantproportionofthe time has to be spent in the laboratory. Computing can only be learnt by doing. Some sample problems are given below as examples. The problems are of varying levels of difficulty.1. A student has a name, roll number, class in which
studying, home address and a date of birth. Design a class containing – constructors and user define
functions, get and set – get to input data and set to display data. -.-.-.
2. Write a class Convert with methods as follows : a) takes 4 arguments representing miles, yards, feet
and inches and convert them into kilometres, meters and centimetres.
b) Takes an argument representing degrees Fahrenheit and convert it to degrees centigrade.
c) a kilobyte is interpreted in two ways: some times it is 1000 bytes (actually correct), but often (and traditionally) it is 210 which is 1024. Similar discrepancies arise for mega, giga, tera and peta (each is 1000 (or 210) times the previous one).
The function should take the 103 (standard kilo) and give the equivalent value using 210 as a kilo for all the above.
3. DefineaclassRecurringPatternsanddefinemethodsin it which will print the following patterns.
a) The method takes an integer argument n and prints the following pattern, shown for n=4.
a a a a a a a a a a a a a a a a b) The method takes an integer argument and
prints the following pattern, shown for n=4. 1 121 12321 1234321 12321 121 1 c) The method takes an integer argument and
prints the following pattern, shown for n=4. abcdcba abc cba ab ba a a ab ba abc cba abcdcba Note : for the three methods above you can assume
that n<10. However, think about what you would do if you allowed n to be a 2 or even 3 digit integer.
4. DefineclasspointtomodelpointsintheX-Yplane.DefinefunctionstotranslateapointalongtheXandYaxesrespectively.Defineafunctionthatcalculatesthe distance from another point.
...contd.
( 10 )
...contd.
5. Write a program to input two strings. Check both the strings and remove all common characters from both the strings. Print both the strings after removing the common characters.
Important : This list is indicative only. The teachers and students should use their imagination to create innovative and original assignments. Some Ideas for the Project :
Students have already been introduced to spreadsheets, databases, word processors and presentation software earlier. That familiarity should be used to introduce the idea of how the software can be designed by modeling it as operations permitted on different objects. Other real world systems can also be modeled on the same lines :1. Calculators2. Banks3. A school4. Toys5. A game6. Trafficlights7. Elevators8. RetailOutlets9. Anoffice10. A company11. Household gadgets like microwave ovens12. Washing machines13. Air Conditioners14. Cars15. Airplanes16. Vending machines17. Automatic Teller Machines (ATM )18. A Social System19. A musical composition20. A clinical diagnostic systemImportant : This list is indicative only. The teachers and students should use their imagination to create innovative and original projects.
EVALUATIONThe teacher in-charge shall keep the record of all the assignments done by the student throughout the year and evaluate them internally. The student is expected to do one project under the guidance of the teacher in charge.An External Examiner shall be nominated by the Head of the school and may be a teacher from the faculty, but not teaching the subject in the relevant section/class. For example, a teacher of Computer Science of Class VIII may be deputed to be the External Examiner for Class X, Computer Applications Projects.
Evaluation of practical work will be done as follows :
Subject Teacher (Internal Examiner) : 50 marks
External Examiner : 50 marks
The total marks obtained out of 100 are to be sent to the Council by the Head of the School.The Head of the School will be responsible for the entry of marks on the mark sheets provided by the Council.EQUIPMENT
There should be enough computer systems to provide for a teaching schedule where at least three-fourths of the time available is used for programming and project work.The course shall require at least 4 periods of about 40 minutes duration per week. In one week out of 4 periods the time should be divided as follows :l 1 period – Lecture cum demonstration by the Instructorl 3 periods –Assignments and Project The hardware and software platforms should be such that the students can comfortably develop and run programs on those machines.Since hardware and software evolve and change very rapidly the schools shall need to upgrade them as required. Following are the minimal specifications as of now.
RECOMMENDED FACILITIES :l A lecture cum demonstration room with a
MULTIMEDIA PROJECTOR/ an LCD and O.H.P. attached to the computer.
l A white board with white board markers should be available.
l A fully equipped Computer Laboratory that allows one computer per student.
l Internet connection for accessing the World Wide Web and email facility.
l The computers should have a minimum of 128 MB RAM and at least a PIII or Equivalent Processor.
l Good Quality printers.l A scanner, a web cam/a digital camera (Should be
provided if possible).
SOFTWARE FOR CLASS X
Any suitable Operating System can be used.
For teaching fundamental concepts of computing using object oriented approach, BlueJ environment (1.2 or higher version) compatible with JDK (1.3 or higher version) as the base or any other editor or IDE, compatible with JDK (1.3 or higher version) as the base may be used. Ensure that the latest versions of software are used. qq
ICSE Solved Paper, 2018Class-X
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 Sections A and any four questions from Section B.The intended marks for questions or parts of questions are given in brackets [ ].
SECTION - A (40 Marks)
Attempt all questions 1. (a) Define abstraction. 2
(b) Differentiate between searching and sorting. 2
(c) Write a difference between the functions isUpperCase ( ) and toUpperCase ( ). 2
(d) How are private members of a class different from public members ? 2
(e) Classify the following as primitive or non- primitive data types : 2
(i) char
(ii) arrays
(iii) int
(iv) classes
2. (a) (i) int res = ‘A’; 2
What is the value of res?
(ii) Name the package that contains wrapper classes.
(b) State the difference between while and do while loop. 2
(c) system.out.print ("BEST"); 2
system.out.println("OF LUCK");
Choose the correct option for the output of the above statements
(i) BEST OF LUCK
(ii) BEST
OF LUCK
(d) Write the prototype of a function check which takes an integer as an argument and returns a character. 2
(e) Write the return data type of the following function. 2
(i) endsWith( )
(ii) log ( )
3. (a) Write a Java expression for the following : 2
12 | OSWAAL ICSE Chapterwise/Topicwise Question Bank, COMPUTER APPLICATIONS, Class-X
3 2x xa b++
(b) What is the value of y after evaluating the expression given below ? 2 y+ = ++y + y-- + --y; when int y=8 (c) Give the output of the following : 2 (i) Math.floor (–4.7) (ii) Math.ceil(3.4) + Math.pow(2, 3) (d) Write two characteristics of a constructor. 2 (e) Write the output for the following : 2 system.out.println("Incredible"+"\n"+"world");
(f) Convert the following if else if construct into switch case 2 if( var==1)
System.out.println("good");
else if(var==2)
System.out.println("better");
else if(var==3)
System.out.println("best");
else
System.out.println("invalid");
(g) Give the output of the following string functions : 2 (i) "ACHIEVEMENT". replace('E', 'A') (ii) "DEDICATE".compareTo("DEVOTE") (h) Consider the following String array and give the output 2 string arr[]= {"DELHI", "CHENNAI", MUMBAI", "LUCKNOW", "JAIPUR"};
system.out.println(arr[0].length()>arr[3].length());
system.out.print(arr[4].substring(0,3));
(i) Rewrite the following using ternary operator : 2 if (bill>10000)
discount = bill * 10.0/100;
else
discount = bill * 5.0/100;
(j) Give the output of the following program segment and also mention how many times the loop is executed : 2 int i;
for (i = 5; i > 10; i++)
system.out.println(i);
system.out.println(i*4);
SECTION - B (60 Marks)
Attempt any four questions from this SectionThe answer in the 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 descriptions/Mnemonic Codes so that the logic
of the program is clearly depicted.Flow-Charts and Algorithms are not required.
4. Design a class RailwayTicket with following description : 15
Instance variables/data members : String name : To store the name of the customer String coach : To store the type of coach customer wants to travel long mobno : To store customer’s mobile number int amt : To store basic amount of ticket
SOLVED PAPER - 2018 | 13
int totalamt : To store the amount to be paid after updating the original amount
Member methods : void accept () – To take input for name, coach, mobile number and amount. void update() – To update the amount as per the coach selected
(extra amount to be added in the amount as follows)
Type of Coaches Amount
First_AC 700
Second_AC 500
Third_AC 250
Sleeper None
void display()–To display all details of a customer such as name, coach, total amount and mobile number. Write a main method to create an object of the class and all the above member methods. 5. Write a program to input a number and check and print whether it is a Pronic number or not. (Pronic number is
the number which is the product of two consecutive integers) 15
Example : 12 = 3 × 4 20 = 4 × 5 42 = 6 × 7 6. Write a program in Java to accept a string in lower case and change the first letter of every word to upper case.
Display the new string. 15
Sample input : we are in cyber world Sample output : We Are In Cyber World 7. Design a class to overload a function volume() as follows : 15
(i) double volume (double R) – with radius (R) as an argument, returns the volume of sphere using the formula. V = 4/3 × 22/7 × R3 (ii) double volume (double H, double R) – with height(H) and radius(R) as the arguments, returns the volume
of a cylinder using the formula. V = 22/7 × R2 × H (iii) double volume (double L, double B, double H) – with length(L), breadth(B) and Height(H) as the arguments,
returns the volume of a cuboid using the formula. V = L × B × H 8. Write a menu driven program to display the pattern as per user’s choice 15 Pattern 1 Pattern 2 ABCDE B ABCD LL ABC UUU AB EEEE A For an incorrect option, an appropriate error message should be displayed. 9. Write a program to accept name and total marks of N number of students in two single subscript array name[ ]
and totalmarks [ ]. 15 Calculate and print : (i) The average of the total marks obtained by N number of students. [average = (sum of total marks of all the students)/N]
(ii) Deviation of each student’s total marks with the average.
[deviation = total marks of a students – average]
14 | OSWAAL ICSE Chapterwise/Topicwise Question Bank, COMPUTER APPLICATIONS, Class-X
ANSWERS SECTION - A (40 Marks)
Attempt all questions
1. (a) Abstraction is one of the key concepts of object-oriented programming (OOP) languages. Its main goal is to handle complexity by hiding unnecessary details of the object created by user. It enables the user to implement more complex logic on top of the provided abstraction without understanding or even thinking about all the hidden complexity. For example the forward and backward movement of the stereo set is abstracted by buttons like <<= and =>>.
(b) Searching is the process of finding one or all locations of any element in the given list of data and deciding if the element is present in the list or not. If that element is present in the list of data then searching is said to be successful otherwise unsuccessful.
Sorting is the process of ordering the given data list in ascending or descending manner (numerically, alphabetically or lexicographically).
(c) isUpperCase() is an in-built function of Java, it is used to check if the letters of the given string is in either uppercase or not. It returns true if all letters are in uppercase otherwise returns false.
toUpperCase() is also an implicit function of Java that is used to change the lowercase letters of the given string to uppercase.
(d) Private members can be accessed only within the class where they are declared, not outside the class, but public members can be accessed inside as well as outside the class.
(e) (i) char → primitive data type
(ii) arrays → non-primitive data type
(iii) int → primitive data type
(iv) classes → non-primitive data type
2. (a) (i) Value of res is 65 because the ASCII value of character 'A' in decimal is 65
(ii) java. lang
(b)
S.No. while do-while
1. while(condition)
{
Statements;
}
do
{
Statements;
}
while(condition);
2. while loop is entry control loop.
do-while is exit control loop.
3. In while loop, firstly condition is checked. If condition is true, statements within while block are executed. After then again Condition is checked and so on.
In do-while loop firstly statements within do-while block are executed, after then condition is checked. If condition is true, again statements are executed and so on.
4. In while loop minimum execution of statements is zero.
In do-while loop minimum execution of statements is one.
(c) (ii) BEST
OF LUCK
Oswaal ICSE Question BankChapterwise & Topicwise Class - X
Computer Applications For 2019 Exam
Publisher : Oswaal Books ISBN : 9789387504745 Author : Panel Of Experts
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