ncert short nots class 10 social science arthik viskas ki samjh chapter 2- bhartiya arthvyavastha ke chetrak

Comments

Post a Comment

Popular posts from this blog

Chapter–3 : Chemical Kinetics (रासायनिक गतिकी) MCQ

"Study With Mayank Sir" - To hit the ball out of the boundary line WA - 8290535520 Youtube - https://www.youtube.com/@dasklibro Chapter–3 : Chemical Kinetics (रासायनिक गतिकी) Question Type: MCQ (Knowledge Based) Marks per Question: 0.5 Q1. Chemical kinetics deals with — रासायनिक गतिकी संबंधित है — A) Energy of reaction / अभिक्रिया की ऊर्जा B) Rate of reaction / अभिक्रिया की दर ✅ C) Equilibrium constant / साम्यांक D) Structure of atom / परमाणु संरचना Answer: B Explanation: Chemical kinetics studies the rate and mechanism of reactions. Q2. Rate of reaction is defined as — अभिक्रिया की दर परिभाषित की जाती है — A) Change in temperature per unit time B) Change in concentration per unit time / प्रति इकाई समय सांद्रता में परिवर्तन ✅ C) Energy released per unit time D) Volume change per unit time Answer: B Explanation: Rate = change in concentration of reactant or product per unit time. Q3. Unit of rate of reaction is — अभिक्रिया की दर की इकाई है — A) mol L⁻¹ B) s⁻¹ C) mol L⁻¹ s⁻¹ / ...
Read more

Chapter–1 : Solutions (विलयन) mcq

"Study With Mayank Sir" - To be on the top of the table  WA - 8290535520 Youtube - https://www.youtube.com/@dasklibro Chapter–1 : Solutions (विलयन) Question Type: MCQ Each Question: 0.5 Mark Total Questions: 50 Q1. A solution is a / विलयन होता है — A) Pure substance / शुद्ध पदार्थ B) Homogeneous mixture / समांगी मिश्रण ✅ C) Heterogeneous mixture / विषमांगी मिश्रण D) Colloid / कोलॉइड Answer: B Explanation: A solution is a homogeneous mixture of solute and solvent. Q2. The component present in larger amount is called / अधिक मात्रा में उपस्थित घटक कहलाता है — A) Solute / विलेय B) Solvent / विलायक ✅ C) Dispersed phase / विसरित अवस्था D) Medium / माध्यम Answer: B Explanation: Solvent is present in larger amount in a solution. Q3. Solid–solid solution example / ठोस–ठोस विलयन का उदाहरण — A) Air / वायु B) Brass / पीतल ✅ C) Soda water / सोडा वाटर D) Tincture iodine / आयोडीन टिंचर Answer: B Explanation: Brass is a solid solution of copper and zinc. Q4. Liquid in liquid solution / द्रव–...
Read more

chapter 4 sat

 "Study With Mayank Sir" - To kick the ball into goal WA - 8290535520  Youtube- https://www.youtube.com/@dasklibro Chapter 4: d- and f-Block Elements  Short Answer Questions Marks: 1.5 each Total Questions: 50 Nature: Knowledge-based  Q1. What are d-block elements? d-block तत्व क्या होते हैं? Answer (उत्तर): English: d-block elements are those in which the last electron enters the (n−1)d orbital. Hindi: d-block तत्व वे होते हैं जिनमें अंतिम इलेक्ट्रॉन (n−1)d कक्षक में प्रवेश करता है। 🔹 Q2. Why are transition elements called transition metals? संक्रमण तत्वों को संक्रमण धातु क्यों कहा जाता है? Answer: English: Because they show transition between s-block and p-block elements in properties. Hindi: क्योंकि इनके गुण s-block और p-block तत्वों के बीच संक्रमण दर्शाते हैं। 🔹 Q3. Write the general electronic configuration of d-block elements. d-block तत्वों का सामान्य इलेक्ट्रॉनिक विन्यास लिखिए। Answer: English: (n−1)d¹–¹⁰ ns⁰–² Hindi: (n−1)d¹–¹⁰ ns...
Read more