Class 12 ISC Computer Science Answer Key 2025 (OUT): Unofficial key PDF download

Class 12 ISC Computer Science Answer Key 2025

Class 12 ISC Computer Science Answer Key 2025: Collegedekho experts are offering unofficial answer keys for the Class 12 ISC Computer Science exam that took place on March 24, 2025. The answer keys cover the first two multiple-choice questions in Part I, which has a total weight of 20 marks and requires all questions to be answered. In Part II, students will choose six questions, two from Section A, two from Section B, and two from Section C. We will not provide answer keys for Part II due to the descriptive nature of the questions, as grading depends on individual writing styles and the depth of responses. By checking the answers students can predict their possible scores in the Computer Science examination.

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Class 12 ISC Computer Science Answer Key 2025

To determine the unofficial correct answers for very short-type questions in Class 12 ISC, refer to the table provided. Each entry represents a specific question and its corresponding answer. Ensure to double-check the answers with your notes or study materials for accuracy. Through this students can anticipate their exam performance. Also Read | Class 12 ISC Result Expected Release Date 2025

Part 1 Question 1

Question Number	Correct Answers
Q1 (i) The complement of the Boolean expression (A • B') + (B' • C) is:	(A'+B) • (B+C')
Q1 (ii) Given below are two statements marked, Assertion and Reason. Read the two statements carefully and choose the correct option. Assertion: The expression ~ ( X ∨ Y ) is logically equivalent to ( ~X^ ~Y) Reason: The commutative property of logical operators states that the order of the operands does not change the result of a binary operation.	Both Assertion and Reason are true but Reason is not the correct explanation for Assertion.
Q1 (iii) According to the Principle of Duality, the Boolean equation: (1 + Y) • (X + Y) = Y + X' will be equivalent to:	(1 • Y) + (X • Y) = Y • X'
Q1 (iv) The Associative Law states that:	A + (B + C) = (A + B) + C
Q1 (v) Consider the following code statement: Which of the following statements are valid for the given code? I. The keyword this in the constructor refers to the current instance of the class. II. The keyword this differentiates between the instance variable age and the parameter age. III. The keyword this can be used only in constructors.	Only I and II
Q1 (vi) Given below are two statements marked, Assertion and Reason. Read the two statements carefully and choose the correct option. Assertion: The break statement prevents fall through effect in switch case construct. Reason: The break statement enables unnatural exit from the loop.	Both Assertion and Reason are true but Reason is not the correct explanation for Assertion.
Q1 (vii) The canonical expression of F (P, Q, R) = π (2, 5, 7) is:	(P • Q' • R) + ( P' • Q • R' ) + ( P' • Q' • R')
Q1 (viii) Study the given propositions and the statements marked, Assertion and Reason that follow it. Choose the correct option on the basis of your analysis. P - It is a holiday Q - It is a sunday Assertion: If it is not a Sunday, then it is not a holiday. (Q' => P') Reason: Inverse is formed when antecedent and consequent are interchanged.	Assertion is true and Reason is false.
Q1 (ix) For the given code segment, write Big O notation for worst-case complexity.	O (P • Q)
Q1 (x) Write the minterms in canonical form for the Boolean Function X (A, B), from the truth table given below:	A' B' + AB

Class 12 ISC Computer Science Exam Analysis 2025 Link

If you're looking for an overview of the ISC Class 12 Computer Science exam for 2025, we will provide insights based on student feedback. You can easily access this information through the direct link below:

Class 12 ISC Subject-Wise Answer Key 2025 |

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