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Exploring Substances: Acidic, Basic, and Neutral — Flashcards

CBSE · Class 7 · Science

68 flashcards for Exploring Substances: Acidic, Basic, and Neutral (CBSE Class 7 Science) to test yourself on key terms and facts.

44 questions68 flashcards5 concepts

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Acidic substancesअम्लीय पदार्थBasic substancesमूल पदार्थNeutral substancesउदासीन पदार्थLitmus indicatorलिटमस सूचक
Card 1Acidic substances

What are acidic substances?

Answer

Acidic substances turn blue litmus paper red. They often taste sour.

Card 2अम्लीय पदार्थ

अम्लीय पदार्थ क्या होते हैं?

Answer

अम्लीय पदार्थ नीले लिटमस पेपर को लाल कर देते हैं। वे अक्सर खट्टे होते हैं।…

Card 3Basic substances

What are basic substances?

Answer

Basic substances turn red litmus paper blue. They are generally slippery to touch and often taste bitter.

Card 4मूल पदार्थ

मूल पदार्थ क्या हैं?

Answer

मूल पदार्थ लाल लिटमस पेपर को नीला कर देते हैं। वे आम तौर पर छूने में फिसलन भरे होते हैं और अक्सर कड़वे होते हैं।…

Card 5Neutral substances

What are neutral substances?

Answer

Neutral substances do not change the colour of either red litmus or blue litmus. They are neither acidic nor basic.

Card 6उदासीन पदार्थ

उदासीन पदार्थ क्या होते हैं?

Answer

उदासीन पदार्थ लाल लिटमस या नीले लिटमस का रंग नहीं बदलते हैं। वे न तो अम्लीय होते हैं और न ही क्षारीय।…

Card 7Litmus indicator

What is litmus?

Answer

Litmus is a natural substance obtained from lichens. It is used as an acid-base indicator and is available as blue and red paper strips or as a solution.

Card 8लिटमस सूचक

लिटमस क्या होता है?

Answer

लिटमस (Litmus) लाइकेन से प्राप्त एक प्राकृतिक पदार्थ है। यह अम्ल-क्षार सूचक के रूप में प्रयोग किया जाता है। यह नीले और लाल रंग के कागज की पट्टियों या घोल के रूप में उपलब्ध होता है।…

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Frequently Asked Questions

What are the important topics in Exploring Substances: Acidic, Basic, and Neutral for CBSE Class 7 Science?
Key topics in Exploring Substances: Acidic, Basic, and Neutral include Types of Substances, Natural Indicators, Neutralisation, Important People and Applications. Study these first, then practise questions on each for Class 7 exams.
How many flashcards are available for Exploring Substances: Acidic, Basic, and Neutral?
There are 68 flashcards for Exploring Substances: Acidic, Basic, and Neutral covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Exploring Substances: Acidic, Basic, and Neutral for Class 7 exams?
Learn the core ideas first, then work through the 44 practice questions on Exploring Substances: Acidic, Basic, and Neutral. Revise definitions regularly and use flashcards for quick recall before the exam.

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