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How Things are Made — Flashcards

CBSE · Class 4 · EVS

68 flashcards for How Things are Made (CBSE Class 4 EVS) to test yourself on key terms and facts. Sample: "How is recycled paper made from old"

41 questions68 flashcards5 concepts

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68 Flashcards·
Paper makingकागज बनानापर्यावरण और पुनर्चक्रणEnvironment and recycling
Card 1Paper making

How is recycled paper made from old newspapers?

Answer

Recycled paper is made by tearing old newspapers, soaking them with fenugreek seeds in water overnight, blending the mixture into pulp, rolling it into thin sheets, and drying it.

Card 2कागज बनाना

पुराने अखबारों से पुनर्चक्रित कागज कैसे बनाया जाता है?

Answer

पुनर्चक्रित कागज पुराने समाचार पत्रों को फाड़कर, उन्हें रात भर पानी में मेथी के बीज के साथ भिगोकर, मिश्रण को गूदे में मिलाकर, पतली शीट में रोल करके और सुखाकर बनाया जाता है।…

Card 3कागज बनाना

पुनर्चक्रित कागज बनाने में मेथी के बीज का मुख्य उपयोग क्या है?

Answer

मेथी के बीज का उपयोग बंधनकारी पदार्थ के रूप में किया जाता है। वे कागज के गूदे को एक साथ रखने में मदद करते हैं जब नई शीट बनाई जाती है।…

Card 4Paper making

What is the main use of fenugreek seeds in recycled paper making?

Answer

Fenugreek seeds are used as a binding material. They help hold the paper pulp together while the new sheet is made.

Card 5Paper making

What is pulp in paper making?

Answer

Pulp is a wet, soft mixture made by soaking and blending torn paper pieces. It is used to make new paper sheets.

Card 6कागज बनाना

कागज बनाने में लुगदी क्या होता है?

Answer

पल्प (Pulp) एक गीला, मुलायम मिश्रण होता है जो कागज़ के फाड़े हुए टुकड़ों को भिगोकर और मिलाकर बनाया जाता है। इसका उपयोग कागज़ की नई शीट बनाने के लिए किया जाता है।…

Card 7पर्यावरण और पुनर्चक्रण

पुनर्चक्रित कागज एक अच्छा विकल्प क्यों है?

Answer

पुनर्चक्रित कागज पेड़ों को बचाने और पर्यावरण की रक्षा करने में मदद करता है क्योंकि यह ताज़ी लकड़ी से सब कुछ बनाने के बजाय पुराने कागज का फिर से उपयोग करता है।…

Card 8Environment and recycling

Why is recycled paper a good choice?

Answer

Recycled paper helps save trees and protect the environment because it uses old paper again instead of making everything from fresh wood.

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Frequently Asked Questions

What are the important topics in How Things are Made for CBSE Class 4 EVS?
Key topics in How Things are Made include Making Recycled Paper, Natural Colours and Dyes, Paper, Trees, and the Environment, Different Types of Paper and Their Uses. Study these first, then practise questions on each for Class 4 exams.
How many flashcards are available for How Things are Made?
There are 68 flashcards for How Things are Made covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise How Things are Made for Class 4 exams?
Learn the core ideas first, then work through the 41 practice questions on How Things are Made. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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