ISC Computer Science Answer Key 2025 (Available) : Detailed Exam Analysis

ISC Computer Science Answer Key 2025 along with the detailed exam analysis is provided here for the students to evaluate their overall performance and probable marks.

Abhilasha Kiran

Updated on - Mar 24, 2025 | 5:49:00 PM

ISC Computer Science Answer Key 2025 is available here (Image Credits: pexels.com).

ISC Computer Science Answer Key 2025: The Council for the Indian School Certificate Examination (CISCE) conducted the ISC Computer Science Exam today, March 24, 2025, from 2 PM to 5 PM. The ISC Computer Science Answer Key 2025 provided here will allow candidates to cross-check their responses and calculate the estimated scores. The ISC Computer Science Question Paper was designed for 70 marks and included Part I and II. Students can also go through the ISC Computer Science Exam Analysis, which includes the overall and section-wise difficulty level.

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ISC Computer Science Answer Key 2025

Students can go through the ISC Computer Science Unofficial Answer Key 2025 below.

Question	Answer
Ques 1 (i): The complement of the Boolean expression (A • B') + (B' • C) is:	(C)(A'+B) • (В +C')
Ques 1 (ii): Given below are two statements marked, Assertion and Reason. Read the two statements carefully and choose the correct option. Assertion: The expression ~ (X V 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.	(B) Both Assertion and Reason are true but Reason is not the correct explanation for assertion
Ques 1 (iii): According to the Principle of Duality, the Boolean equation (1 + Y) • (X + Y) = Y + X' will be equivalent to:	(D) (1 . Y) + (1 . X) = Y . X'
Ques 1 (iv): The Associative Law states that:	(C) A+(B+C)=(A+B)+C
Ques 1 (v): 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.	(A) Only I and II
Ques 1 (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 caseconstruct. Reason: The break statement enables unnatural exit from the loop.	(B) Both Assertion and Reason are true but Reason is not the correct explanation
Ques 1 (vii): The canonical expression of F(P, Q, R) = n (2, 5, 7) is:	(B) (P . Q' . R) + (P' . Q . R') + (P' . Q' . R')
Ques 1 (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- Iy 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,	(C) Assertion is true and Reason is false.
Ques 1 (ix): For the given code segment, write Big O notation for worst case complexity. for (int i=1; i<=P; i++) { Statements; for (int j=1; j<=P; ++j) for (int k=1; k<=@; k++) { Slatements /	O (P x Q)
Ques 1 (x): Write the minters in canonical form for the Boolean Function X (A, B), from the	A'B' + AB

ISC Computer Science Detailed Exam Analysis 2025

Students can check the overall and section-wise analysis of ISC Computer Science Question Paper 2025.

Particulars	Details
Overall Question Paper Difficulty Level	Easy to Moderate
Difficulty level of Part - I	Easy
Difficulty level of Part - II	Easy to moderate
Number of good attempts	60+
Was the paper Time Taking?	Only some questions were time consuming (mixed reactions)