Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है
In this Class 9 Science topic, students explore how matter continuously moves through Earth’s atmosphere, water, soil, rocks, and living organisms. They learn about cycles such as the water, carbon, and nitrogen cycles, and examine processes including evaporation, photosynthesis, respiration, decomposition, and nutrient transfer through food chains. The topic connects these movements to Earth as a system, showing how energy flows while matter is recycled and how human activities can affect natural balance.
Easy · Level 1 · 2 questions
TOPIC PRACTICE
Quiz this set
Up to 2 questions from this page. Select your focus, then start.
2 questions
Choose questions
View options
Keeping products and materials in use for as long as possible through reuse, repair, and recycling
Using an item once and immediately throwing it away
Always buying new items instead of repairing old ones
Treating natural resources as exhausted after using them
View options
In reuse, an item is used again without processing, whereas in recycling, the material is processed to make a new product.
In reuse, an item is discarded, whereas in recycling, it is used again directly without processing.
Reuse is only for paper, whereas recycling is only for plastic.
In both reuse and recycling, the item is burned to produce energy.
Question 1EasyLevel 1
What is the basic idea of a circular economy?परिपत्र अर्थव्यवस्था का मूल विचार क्या है?
Correct answer:सही उत्तर:A
A circular economy tries to keep products, components, and materials useful for as long as possible. Reuse, repair, refurbishment, and recycling reduce waste and the need to extract new resources. The one-use-and-discard model and constant replacement follow a linear economy, not a circular one; therefore option A is correct.परिपत्र अर्थव्यवस्था में उत्पादों और सामग्रियों को पुनः उपयोग, मरम्मत, नवीनीकरण और पुनर्चक्रण द्वारा लंबे समय तक उपयोगी रखा जाता है। इससे कचरा और नए प्राकृतिक संसाधनों की आवश्यकता कम होती है। एक बार उपयोग करके फेंकना रैखिक अर्थव्यवस्था का तरीका है, इसलिए विकल्प A सही है।
What is the main difference between reuse and recycling?पुनः उपयोग और पुनर्चक्रण में मुख्य अंतर क्या है?
Correct answer:सही उत्तर:A
Reuse means using an item again without substantially processing its material, such as refilling a suitable bottle. Recycling means collecting and processing waste material so it can become a new material or product. Reuse is not limited to paper and recycling is not limited to plastic; burning is a different waste-treatment method. Thus A is correct.पुनः उपयोग में वस्तु को उसकी सामग्री बदले बिना उसी या समान उद्देश्य के लिए फिर इस्तेमाल किया जाता है, जैसे बोतल को दोबारा भरना। पुनर्चक्रण में पुरानी सामग्री को संसाधित करके नया पदार्थ या उत्पाद बनाया जाता है। ये प्रक्रियाएँ केवल कागज या प्लास्टिक तक सीमित नहीं हैं और जलाना अलग प्रक्रिया है।
Google Analytics helps us understand site usage. Microsoft Clarity records usage interactions after analytics consent. Google may send limited cookie-free signals before your choice. The Live Visitors widget operates independently of this analytics choice; see the privacy policy for its provider and fallback details. Essential site features work without analytics cookies. You can change your choice later in Privacy choices. Privacy policy
