CBSE Class 12 Previous Year Important Questions & Answers | सभी विषयों के महत्वपूर्ण प्रश्न
यहां Class 12 CBSE Board Exam के लिए पिछले वर्षों के सबसे अधिक पूछे जाने वाले important questions और उनके answers दिए गए हैं। Topper strategy के अनुसार इन questions को अवश्य तैयार करें—क्योंकि 60-70% questions इन्हीं concepts से आते हैं।
🧪 Physics Important Previous Year Questions (PYQs)
Q1. Define electric flux and state Gauss theorem.
Ans: Electric flux is the measure of electric field lines passing normally through a given surface ... (explanation continues)
Q2. Derive the relation for capacitance of parallel plate capacitor.
Ans: C = ε₀A / d … Formula based derivation asked repeatedly in exams.
Q3. Explain the working principle of AC Generator.
Ans: Based on electromagnetic induction …
🧪 Chemistry Important Previous Year Questions
Q1. What is Raoult’s Law? Explain its application.
Ans: The relative lowering of vapour pressure is equal to mole fraction of solute …
Q2. Explain SN1 & SN2 reactions with example.
📐 Mathematics Important Questions (Most Expected)
Q1. Using integration find the area bounded by y=x² and y=4.
Q2. Solve the linear programming problem using graphical method.
🧬 Biology Previous Year Questions
Q1. Explain Lac Operon with diagram.
Q2. Describe IVF & Test tube baby process.
📘 English Class 12 (Most Important Questions)
Q1. Write debate on the topic "Social Media is Harmful for Students".
Q2. Flamingo: Discuss theme of the chapter Lost Spring.
📊 Accounts, Economics & Business Studies
Q1 (Accounts). Pass journal entries for dissolution of partnership.
Q1 (Economics). Explain Law of Demand & Demand Curve.
Q1 (Business Studies). Explain 7 Principles of Management by Fayol.
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