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"Study With Mayank Sir" - To get better understanding of your goal WA - 8290535520 Youtube- https://www.youtube.com/@dasklibro 📘 Chapter 1 – Solutions Very Short Answer Questions (1 Mark Each)  NCERT Class 12 Chemistry  Knowledge-based  Total Questions: 50 🔹 Very Short Answer Questions Q1. What is a solution? विलयन क्या है? Answer: A solution is a homogeneous mixture of two or more components. विलयन दो या दो से अधिक पदार्थों का समांगी मिश्रण होता है। Q2. What is a solvent? विलायक क्या होता है? Answer: The component present in larger amount in a solution is called solvent. विलयन में अधिक मात्रा में उपस्थित घटक को विलायक कहते हैं। Q3. What is a solute? विलेय क्या है? Answer: The component present in smaller amount is called solute. कम मात्रा में उपस्थित घटक को विलेय कहते हैं। Q4. Define molarity. मोलरता की परिभाषा दीजिए। Answer: Molarity is the number of moles of solute per litre of solution. मोलरता प्रति लीटर विलयन में विलेय के मोलों की संख्या है। Q5. Write the unit of m...

"Study With Mayank Sir" - To make your Parents proud on You WA - 8290535520 Youtube - https://www.youtube.com/@dasklibro 📘 Chapter 1: Solutions 📄 Fill in the Blanks (Knowledge Based) Marks: 0.5 each Total Questions: 50 🔹 Fill in the Blanks (0.5 × 50 = 25 marks) Q1.  A solution having uniform composition throughout is called a __________ mixture. एक विलयन जिसकी संरचना सर्वत्र समान होती है, उसे __________ मिश्रण कहते हैं। Answer: Homogeneous / समांगी Explanation: A homogeneous mixture has uniform composition throughout, which is the basic definition of a solution in NCERT. Q2. The component present in larger amount in a solution is called the __________. विलयन में अधिक मात्रा में उपस्थित घटक को __________ कहते हैं। Answer: Solvent / विलायक Explanation: Solvent determines the physical state of the solution. Q3. The concentration unit expressed as moles per litre is called __________. मोल प्रति लीटर में व्यक्त सांद्रता की इकाई __________ कहलाती है। Answer: Molarity / मोलरता Ex...

"Study With Mayank Sir" - To be higher above your expectations WA - 8290535520 Youtube - https://www.youtube.com/@dasklibro ⚡ Chapter 2 – Electrochemistry 🧩 Fill in the Blanks (Understanding-Based) (Each question carries 0.5 mark) 1️⃣ Electrochemistry deals with the interconversion of __________ and __________ energy. विद्युत रसायन विज्ञान __________ और __________ ऊर्जा के परस्पर परिवर्तन से संबंधित है। Answer: Chemical and Electrical / रासायनिक और विद्युत Explanation: Electrochemistry studies how chemical reactions produce or use electricity. 2️⃣ A cell that converts chemical energy into electrical energy is called a __________ cell. वह सेल जो रासायनिक ऊर्जा को विद्युत ऊर्जा में बदलता है उसे __________ सेल कहते हैं। Answer: Galvanic (Voltaic) cell / गैल्वैनिक (वोल्टाइक) सेल Explanation: Galvanic cells operate on spontaneous redox reactions to generate current. 3️⃣ In a galvanic cell, oxidation occurs at the __________. गैल्वैनिक सेल में ऑक्सीकरण __________ पर होता है। Answe...

"Study With Mayank Sir" - To beat the competition  📘 Chapter 5 – Coordination Compounds MCQ Type | 0.5 Mark Each | Application-Based Q1. A coordination compound shows optical isomerism when: एक समन्वय यौगिक प्रकाशीय समावयवता दर्शाता है जब: A. It has square planar geometry / इसका ज्यामिति square planar हो B. It contains chelating ligands / इसमें chelating ligands हों C. It has tetrahedral geometry / इसका ज्यामिति tetrahedral हो D. It contains only monodentate ligands / इसमें केवल monodentate ligand हों ✅ Answer: B. Chelating ligands / Chelating ligand Explanation (English): Optical isomerism arises due to asymmetric arrangement, commonly seen in complexes containing chelating ligands like en. Q2. Which complex will NOT show cis–trans isomerism? कौन-सा complex cis–trans समावयवता नहीं दर्शाएगा? A. [Pt(NH₃)₂Cl₂] B. [Co(NH₃)₄Cl₂]⁺ C. [Ni(CO)₄] D. [Cr(en)₂Cl₂]⁺ ✅ Answer: C. [Ni(CO)₄] Explanation (English): [Ni(CO)₄] is tetrahedral, and tetrahedral complexes do not show geometrical...