ISC 2019 Computer Science Practical Question Paper for Class 12

About this paper

This is ISC Class 12 Computer Science Paper 2 (Practical), code 868B, from the 2019 board examination. It is marked out of 30. Three hours are allowed, plus fifteen minutes to read the paper: a 90-minute planning session, then a 90-minute examination session that starts only after planning time is over. Candidates attempt any one of three problems in Java. Marks go to an algorithm (3), the program (5), documentation (2), a working printout (2), a test run on the sample data (5) and a viva (3). The practical file is assessed by the teacher (5) and the visiting examiner (5). The problems are a day-number calendar, a square matrix filled from a sorted array, and palindrome words.

Exam

ISC Class 12

Subject

Computer Practical

Year

2019

Paper code

868B

Maximum marks

30

Time allowed

3 hours + 15 min reading

Questions

3

Pages

5

Answers included

No, questions only

Paper pattern

• Selected problem

  20 marks

  Any one of three problems: algorithm (3), Java program (5), documentation (2), printout (2), test run (5) and viva (3)

• Practical file

  10 marks

  Programming assignments done during the year, assessed by the teacher (5) and the visiting examiner (5)

Topics covered

• Algorithms and Java programming
• Calendar dates and leap years
• Sorting a one-dimensional array
• Filling a square matrix
• String validation
• Palindrome words

Questions from this paper

1. Accept a day number from 1 to 366 and a four-digit year, display the corresponding date, then display the date N days later, where 1 < N ≤ 100. Reject values outside those limits.
2. For day number 255 in 2018, the date is 12th September 2018. What is the date 22 days later?
3. Sort a one-dimensional array of N positive integers, where 2 < N < 10, and fill a square matrix from the sorted values as shown in the paper.
4. If the array is {5, 2, 8, 1}, it sorts to {1, 2, 5, 8} before the matrix is filled. Display both the sorted array and the matrix.
5. Accept a sentence in uppercase ending in '.', '?' or '!'. Turn each non-palindrome word into a palindrome by joining it to its reverse without the last letter, so HELP becomes HELPLEH.
6. For the sentence THE BIRD IS FLYING. the converted sentence is THEHT BIRDRIB ISI FLYINGNIYLF.