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Telangana Open School (TOSS) Class 12 Chemistry — Flashcards for Quick Revision

Practice flashcards for Telangana Open School (TOSS) Class 12 Chemistry. Quick question-and-answer cards for every chapter to boost memory and revision speed.

Quick Summary

Chapter-wise flashcards for Telangana Open School (TOSS) Class 12 Chemistry. Each card has a question on the front and answer on the back — perfect for quick daily revision using active recall.

How to Use Flashcards

  1. Read the question — try to answer it in your head before flipping.
  2. Check the answer — compare your answer. Mark cards you got wrong for repeat review.
  3. Spaced repetition — review difficult cards more often. Easy cards can be spaced out.
  4. 10–15 minutes daily — short, consistent sessions are more effective than marathon cramming.

Chapter-Wise Flashcards — 41 Chapters

Preview flashcards for each chapter. Each card tests one key concept, definition, or formula from Telangana Open School (TOSS) Class 12 Chemistry.

1

Mole Concept

30 cards

Q: Define mole in terms of carbon-12.

A: A mole is the amount of substance that contains as many elementary entities (atoms, molecules, etc.) as there are atoms in exactly 12 grams of carbon-12.

Q: What is Avogadro's constant? Give its value.

A: Avogadro's constant (Nₐ) is the number of particles in one mole of a substance. Its value is 6.022 × 10²³ mol⁻¹.

Q: How many atoms are in 1 mole of carbon?

A: 1 mole of carbon contains 6.022 × 10²³ atoms.

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2

Occurance and Extraction of Metals

30 cards

Q: What is the difference between a mineral and an ore?

A: A mineral is a naturally occurring substance in which a metal or its compound exists. An ore is a mineral from which a metal can be extracted economically. All ores are minerals, but not all minerals

Q: Why do noble metals like gold and silver occur in the native state?

A: Noble metals have low reactivity and show little affinity for air, moisture, CO₂, or other non-metals. Hence, they remain in the elemental or free state in nature.

Q: Name two metals that occur in nature as sulphides and two as oxides.

A: Sulphides: Zinc (ZnS), Lead (PbS). Oxides: Iron (Fe₂O₃), Aluminium (Al₂O₃·2H₂O).

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3

Environmental Concerns

35 cards

Q: Define environment.

A: Environment refers to the biotic and abiotic surroundings with which living organisms interact. It includes air, water, soil, living organisms, and energy.

Q: What are the two components of environment?

A: The two components are: (i) Abiotic components – air, water, soil, energy, radiation; (ii) Biotic components – microbes, plants, animals.

Q: List three biotic components of environment.

A: Examples of biotic components: bacteria, algae, and plants.

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Frequently Asked Questions

Where can I find Telangana Open School (TOSS) Class 12 Chemistry Flashcards?

This page provides flashcards for Telangana Open School (TOSS) Class 12 Chemistry for the 2026 board exam. For chapter-by-chapter study help including summaries, quizzes, and flashcards, try Super Tutor.

Chemistry is one of the scoring subjects in Telangana Open School (TOSS) Class 12 if prepared well. Focus on understanding concepts, practising problems regularly, and revising key formulas. Most students who follow a structured study plan score above 80%.

Start by understanding the complete syllabus. Then focus on important questions from each chapter. Use revision notes for quick review before exams. Follow a study plan that covers all chapters with dedicated revision time.

Flashcards use active recall — one of the most effective study techniques. By testing yourself with question-answer cards, you remember concepts 3× longer than passive reading. Use them daily for 10–15 minutes.

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