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ICSE Class X Prelims 2019 : Computer Applications (Jamnabai Narsee School (JNS), Mumbai)

4 pages, 33 questions, 28 questions with responses, 48 total responses,    2    0
Minu Joshi
Jamnabai Narsee School (JNS), Mumbai
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FIRST PRELIMINARY EXAMINATION 2018 COMPUTER APPLICATIONS Class: 10 Marks: 100 Time: 2 Hrs. Date: 29/11/2018 Answer 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 answers. This Paper is divided into two Sections. Attempt all question from Section A and four question from Section B. The intended marks for questions or parts of questions are given in brackets [ ]. This paper consists of 4 printed pages. SECTION A (40 MARKS) (All questions are compulsory) Question 1. a) What do you mean by abstraction? [2] b) Using an example, explain the term object. [2] c) What is wrapper class? [2] d) State the purpose of the new operator. [2] e) Write an expression in java for : [2] sin x + 2 + 2 + Question 2. a) Differentiate between a local variable and a global variable. [2] b) int a = 15 , b = 21 , C; [2] Find the value of C in : C = ++a + b++ * a++ -b; (Show the steps). c) What is the purpose of default in a switch statement? [2] d) Define an impure function. [2] e) What is default constructor? [2] a) Explain the concept of constructor overloading with an example. [2] b) Differentiate between equals ( ) and compareTo(). [2] c) Differentiate between call by value and call by reference. [2] d) What is an identifier? . [2] e) Differentiate between Formal and Actual parameter. [2] Question 3. (1)

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