Xth CBSE Chemistry | NCERT Science Textbook - Chapter 1, Chemical Reactions and Equations | Notes and Sample Questions-Answers

 

Class 10, NCERT (CBSE) - Science (Chemistry)
 Chapter 1, Chemical Reactions and Equations
Notes and Sample Questions
What is a ‘Reaction’?
What is a ‘Chemical Reaction’?
What is a ‘Chemical Equation’?
Types of Chemical Reaction
What are ‘Combination Reactions’?
What are ‘Decomposition Reactions’?
What are ‘Displacement Reactions’?
What are ‘Double Displacement Reactions’?
Q.1: Which of the following is a Combination and which is a Displacement Reaction?
(a) Cl2 + 2KI à 2KCl + I2
(b) 2K + Cl2 à 2KCl
Q.2: What is a catalytic decomposition?
Q.3: What is the term used for the symbolic representation of a reaction.
Q.4: Write two uses of decomposition reactions.
Q.5: Explain the terms ‘oxidizing agent’ and reducing agent’.
Further Study on Chapter 1, Chemical Reactions and Equations  
  • Chapter 1, Chemical Reactions and Equations | Class 10 CBSE Science (Chemistry) | NCERT Solution for In-Text Questions [Read]
  • Class 10 NCERT (CBSE) Science Chemistry - Multiple choice questions (MCQ) | Chapter 1,  Chemical Reactions and Equations [Read]
  • Class 10, CBSE (NCERT) Science | Chapter-1, Chemical Reactions and Equations | NCERT Solution - Science Textbook Exercise  [Read]

3 comments:
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  1. all those given are benefitial but if those not given are also provided means it will be more useful...............

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  2. can some one also post valencies of all elements.that would be useful

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  3. H-1
    He-0
    Li-1
    Be-2
    B-3
    C-4
    N-2
    O-2
    F-1
    Ne-0
    Na-1
    Mg-2
    Al-3
    Si-4
    P-3
    S-2
    Cl-1
    Ar-0
    K-1
    Ca-2

    ReplyDelete

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