ISC Class 12 Computer Science Important Topics 2025 and Usually Difficult, Confusing Concepts

ISC Class 12 Computer Science Important Topics 2025: As per the schedule, the ISC Class 12 Computer Science exam 2025 will be conducted on March 24, 2025. Candidates who will be appearing for the OSC 12th Computer Science exam, should refer to the subject-wsie important topics. So that the candidates can expect to score maximum marks since they will get maximum questions from those topics. For instance, “Programming in Java” is the most weightage topic of the ISC Class 12 Computer Science exam. Apart from the important topics, the candidates will find out the most difficult and confusing topics of the ISC 12th Computer Science exam here.

ISC Class 12 Computer Science Important Topics 2025

Check out the ISC Class 12 Computer Science important topics 2025 here in the following table:

• Programming in Java: 25 to 30 marks

• Inheritance, Interface, Polymorphism: 8 to 10 marks

• Data Structures: 8 to 10 marks

• Boolean Algebra: 8 to 10 marks

• Complexity and Big O Notation: 5 to 6 marks

• Computer Hardware: 3 to 5 questions

ISC Class 12 Computer Science Difficult Topics 2025

Here are the ISC Class 12 Computer Science Difficult topics 2025:

• Propositional statements for Converse and Contrapositive
• Boolean laws and finding compliment/De Morgan’s laws
• Computing number of columns (N) in address calculation
• Output to identify the missing statements/expressions
• Recursive technique in programming and identifying the hexadecimal values for 10 to 15 (A – F)
• Type cast the characters to find ASCII code and vice-versa
• Dominant term example in computational complexity
• Combination of gates in series to obtain the final gate
• Canonical and Cardinal expression
• Use of Interface
• Output using recursive function
• K-MAPS (grouping, redundant groups, map-rolling, place value and logic gate diagrams)
• Insertion sort and arranging data in descending order
• Constructor inheritance and method overriding in inheritance
• Degree of the tree and post-order traversal

ISC Class 12 Computer Science Confusing Topics 2025

Here are the ISC Class 12 Computer Science most confusing topics 2025:

• Finding Canonical and Cardinal expressions and vice-versa 
• Type casting during obtaining ASCII codes of characters and vice-versa
• Constructor inheritance and method overriding (use of super keyword)
• Applications of logic gates
• Sorting data in descending order using Insertion sort
• Stack – push and pop
• Degree and post-order tree traversal in Binary tree

Keep visiting CollegeDekho for the latest Education News on entrance exams, board exams and admissions. You can also write to us at our email ID news@collegedekho.com.