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ICSE Class X Prelims 2021 : Computer Applications (Niraj Public School (NPS), Hyderabad)

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NIRAJ PUBLIC SCHOOL PREFINAL II JANUARY 2021 COMPUTER APPLICATIONS CLASS: 10 TIME: 2 hrs. MARKS: 100 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 only. Answer ALL questions from SECTION Aand anyFOUR questions from SECTION B. The intended marks for questions or parts of questions are given in brackets (). SECTION A (40 marks) Attempt all the questions QUESTION NO 1:- a) i)What is the difference between ASCII and Unicode? ii) Write the java expression for 5 + (2) b) Evaluate The Following:(2) int a=10,b=4; (i) int z= ++a/--b - a++* ++b%a ; System.out.println(z); (ii) System.out.println( value= + a + b ); c) i)What is the size(in bytes) of a class consisting of a floating number and a long integer. ii)Name 2 types of java programs. (2) d) Write the difference between length and length ( ). (2) e) What is the difference between pure and impure functions? (2) QUESTION NO 2:- a) Write the output:(2) System.out.println(Math.pow(2,3)+Math.round(9.777); System.out.println(Math.ceil(-9.3)+Math.sqrt(9)); System.out.println(Math.max(5.2,7); System.out.println(Math.floor(-5.3+Math.rint(5.5)); b) Differentiate between an infinite loop and empty loop. (2) c) Explain the difference between static and dynamic initialization by giving a suitable example. (2) d) Define inheritance. Name the keyword used for inheritance. (2) e) i) What is Byte code? ii) What are library classes? (2)

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