Posts

CLASS 10 : CHAPTER : 2 : Acids, Bases and Salts

-
CLASS 10  SCIENCE Chapter : 2 Acids, Base and Salts     1. What are Indicators? Ans. Indicators are substances which indicate the acidic or basic nature of the solution by the color or smell change. 1. सूचक किसे कहते हैं ? उत्तर: सूचक वे पदार्थ हैं जो रंग या गंध बदलकर किसी विलयन के अम्लीय या क्षारीय होने की पहचान कराते हैं।   2. Write the types of Indicators? Ans. There are three types of indicators: A. Natural Indicator B. Synthetic Indicator C. Olfactory Indicator 2. सूचकों के प्रकार लिखिए ? उत्तर: सूचक तीन प्रकार के होते हैं: A. प्राकृतिक सूचक। B. कृत्रिम सूचक। C. गंधीय सूचक।   3. What are Natural Indicators? Ans. Indicators obtained from natural sources are called Natural Indicators. Example:- Litmus, turmeric, red cabbage, China rose, etc. 3. प्राकृतिक सूचक क्या हैं ? उत्तर: प्राकृतिक स्रोतों से प्राप्त सूचकों को प्राकृतिक सूचक कहा जाता है। उदाहरण:- लिटमस , हल्दी , लाल गोभी , चाइना रोज आदि।   4....
Post a Comment
Read more

CLASS 10 : CHAPTER 9 : LIGHT : Reflection and Refraction

-
Image
  CLASS 10 SCIENCE LIGHT : Reflection and Refraction 88. Name the type of mirror used in the following situations. (a) Headlights of a car. (b) Side/rear-view mirror of a vehicle. (c) Solar furnace. Support your answer with reason. Ans. (a) Headlights of a car: Concave Mirror Reason: When a light bulb is placed at the principal focus of a concave mirror, the mirror reflects the light outward to produce a powerful, parallel beam of light. This allows the driver to see clearly over long distances in the dark. (b) Side/rear-view mirror of a vehicle: Convex Mirror Reason: A convex mirror curves outwards, giving it a much wider field of view. It allows the driver to see a large area of the traffic behind them. Additionally, it always forms virtual, erect, and diminished (smaller) images, helping drivers easily judge the distance of approaching vehicles. (c) Solar furnace: Concave Mirror Reason: A concave mirror is a converging mirror. It focuses all the parall...
Post a Comment
Read more

WHY OUR COUNTRY NAME BHARAT? : SST TOPIC

-
  WHY OUR COUNTRY NAME BHARAT? LEVEL: CLASS 6/7 WORDS : 100 SUBJECT: SST Our country is called Bharat because of an ancient king named Bharata. He was a very brave and wise ruler in old Indian stories. He united a huge land under his peaceful rule. Because he was a great king, people named the country after him. The name Bharat represents our rich history, deep roots, and beautiful culture. It connects us to our past. Today, our constitution uses both India and Bharat as official names. Learning this name helps us respect our ancient heritage and feel proud of our glorious nation.
Post a Comment
Read more

CLASS 8 : Science : Health : The Ultimate Treasure

-
 CLASS 8  Science  Health : The Ultimate Treasure 1. What is Health? Ans.   Health is complete physical, mental, and social well-being, not just the absence of disease . 1. स्वास्थ्य क्या है ? उत्तर: स्वास्थ्य का अर्थ है संपूर्ण शारीरिक , मानसिक और सामाजिक कल्याण , न कि केवल रोग का अभाव।   2. What are Health Components? Ans. Health Components are following: ·          Involves physical fitness, ·          positive mindset, and ·          Strong social relationships. 2. स्वास्थ्य के घटक क्या हैं ? उत्तर: स्वास्थ्य के घटक निम्नलिखित हैं: • शारीरिक फिटनेस , • सकारात्मक मानसिकता , और • मजबूत सामाजिक संबंध।   3. Write the definition of Health according to Ayurveda? Ans. Health is a balance of body, mind, and surroundings via daily/seasonal routines, diet, and yoga. 3. आयुर्वेद के अनुसार स्वास्थ्य की परिभाषा लिखिए ? उत्तर: स्वास्थ्य शरीर , मन और...
Post a Comment
Location: Rajeev Nagar, Doiwala, Uttarakhand 248140, India
Read more