Dry waste is non-biodegradable recyclable waste (paper, plastic, glass); wet waste is biodegradable kitchen waste. Learn the difference, examples and why we segregate.
Dustbin colour code in India — green, blue, yellow, red, black, orange bin uses. Complete waste segregation guide for class 5 to 10 and general awareness.
A hot air oven sterilises by dry heat at 160°C for 2 hours. Learn its principle, parts, working, temperature-time settings, uses, advantages and limitations.
Learn the massive benefits of using Humic Acid for plants. Understand how it improves soil health, increases root growth, and boosts fertilizer efficiency.
Importance of trees essay in English and Hindi — benefits, environmental role, deforestation, and conclusion. Complete guide for class 5, 6, 7, 8, 9, 10 students.
Learn the definition of mixed cropping, its advantages, and how it differs from intercropping. Important for Class 8 and 10 Agriculture chapters.
Natural fibres come from plants and animals (cotton, jute, wool, silk); synthetic fibres are man-made from chemicals (nylon, polyester, acrylic). Learn types and difference.
जानें पानी गीला क्यों होता है। Adhesion और Cohesion के वैज्ञानिक सिद्धांत से समझें wetness का कारण।
Learn the exact percentage of nitrogen in the Earth's atmosphere. Understand the composition of air and why nitrogen is so important.
Learn the meaning of SNF (Solid Not Fat) in milk. Understand why dairy companies check SNF levels to determine milk quality, purity, and price.
TDS (Total Dissolved Solids) for drinking water: BIS acceptable limit is 500 mg/L. Learn what TDS means, the TDS chart, health effects and how to reduce it.
Learn what things we get from plants. A simple list of 10 uses of plants including food, oxygen, wood, medicines, and cotton for EVS Class 3, 4, and 5.
Discover the top 10 greatest scientists of India who changed the world. Learn about CV Raman, APJ Abdul Kalam, Srinivasa Ramanujan, and Homi Bhabha.
Learn the three main types of crops grown in India — Kharif (summer), Rabi (winter), and Zaid (short season) — with examples of each crop type.
Learn the two main types of waste in science and EVS. Understand the critical difference between Biodegradable and Non-biodegradable waste for environmental safety.
An ultrasonic cleaner uses high-frequency sound waves to create cavitation bubbles that remove dirt. Learn its principle, parts, working, uses and advantages.
जानें विज्ञान क्या है? विज्ञान (Science) की सटीक परिभाषा, इसके मुख्य प्रकार (भौतिकी, रसायन, जीव विज्ञान) और मानव जीवन में इसका महत्व हिंदी में समझें।
Learn what domestic animals are. Understand the difference between wild and domestic animals, examples like cows and dogs, and how they help humans.
Discover the surprising weight of a cloud. Learn how scientists calculate cloud mass, why clouds float despite being heavy, and the science of water droplets.