NIOS Class 12 Chemistry — Flashcards for Quick Revision
Practice flashcards for NIOS Class 12 Chemistry. Quick question-and-answer cards for every chapter to boost memory and revision speed.
Quick Summary
Chapter-wise flashcards for NIOS 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
- Read the question — try to answer it in your head before flipping.
- Check the answer — compare your answer. Mark cards you got wrong for repeat review.
- Spaced repetition — review difficult cards more often. Easy cards can be spaced out.
- 10–15 minutes daily — short, consistent sessions are more effective than marathon cramming.
Chapter-Wise Flashcards — 8 Chapters
Preview flashcards for each chapter. Each card tests one key concept, definition, or formula from NIOS Class 12 Chemistry.
Atomic Structure
30 cardsQ: What are the three fundamental particles of an atom and their relative charges?
A: The three fundamental particles are: 1. Electron (e⁻) - Negative charge (-1) 2. Proton (p⁺) - Positive charge (+1) 3. Neutron (n⁰) - Neutral charge (0) Electrons are approximately 1/1840th the mass o
Q: Define atomic number (Z) and mass number (A). How are they related to neutrons?
A: Atomic Number (Z) = Number of protons in the nucleus = Number of electrons in a neutral atom Mass Number (A) = Total number of protons + neutrons Number of Neutrons = A - Z Example: Oxygen-17 has Z
Q: Calculate the number of protons, neutrons, and electrons in ₈O¹⁷
A: For ₈O¹⁷: Step 1: Identify atomic number (Z) = 8 - Number of protons = 8 - Number of electrons = 8 (in neutral atom) Step 2: Identify mass number (A) = 17 Step 3: Calculate neutrons - Number of neu
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Periodic Table and Periodicity in Properties
30 cardsQ: What is Dobereiner's Law of Triads? Provide an example.
A: Dobereiner's Law of Triads (1817) states that when three closely related elements are grouped together, the atomic weight of the middle element is approximately the arithmetical mean of the other two.
Q: State Newlands' Law of Octaves and explain why it failed.
A: Newlands' Law of Octaves (1863): When elements are arranged in order of increasing atomic weight, every eighth element has similar properties, like musical notes repeating in octaves. WHY IT FAILED: T
Q: What was Mendeleev's greatest contribution to the periodic table?
A: Mendeleev's greatest contribution (1869) was: (1) Arranging elements by INCREASING ATOMIC WEIGHT and demonstrating periodic recurrence of properties. (2) LEAVING GAPS for undiscovered elements (Sc, Ga
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Chemical Bonding
35 cardsQ: What are valence electrons and why are they important in chemical bonding?
A: Valence electrons are electrons in the outermost shell (valence shell) of an atom. They are crucial because: (1) They determine the combining capacity or valency of an atom, (2) They participate direc
Q: Define a chemical bond and explain how it forms in terms of energy changes.
A: A chemical bond is an attractive force that holds atoms together in a molecule. Definition: When two atoms approach each other, the energy of the combined system becomes less than the sum of energies
Q: Explain Kossel's theory of ionic bond formation using the NaCl example.
A: Kossel's Theory: Atoms achieve stable noble gas configuration by losing or gaining electrons. For NaCl formation: Na (2,8,1) loses 1 electron → Na⁺ (2,8 - like Ne). Cl (2,8,7) gains 1 electron → Cl⁻ (
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Where can I find NIOS Class 12 Chemistry Flashcards?
This page provides flashcards for NIOS Class 12 Chemistry for the 2026 board exam. For chapter-by-chapter study help including summaries, quizzes, and flashcards, try Super Tutor.
Is NIOS Class 12 Chemistry easy to score in?
Chemistry is one of the scoring subjects in NIOS 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%.
How to prepare for NIOS Class 12 Chemistry board exam?
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.
How do flashcards help in NIOS Class 12 Chemistry preparation?
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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More Chemistry Resources
NIOS Class 12
Practice Quiz
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Important Questions
Board exam-style questions with marking scheme
Revision Notes
Key formulas, concepts, and quick revision points
Formula Sheet
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Chapter Summary
Understand each chapter at a glance
Concept Maps
Visual diagrams showing how topics connect
Study Plan
Day-by-day preparation schedule
Syllabus
Complete topic list and marks distribution
NCERT Solutions
Every textbook exercise solved step by step