Class 10 Science: Chemical Reactions and Equations
This worksheet assesses your understanding of different types of chemical reactions, balancing equations, and identifying common observations during chemical changes.
Class 10CBSESciencemediumPractice
Preview · 10 questions
- Q1. Which of the following statements about the given reaction are correct? 3Fe(s) + 4H₂O(g) → Fe₃O₄(s) + 4H₂(g) (i) Iron metal is getting oxidised. (ii) Water is getting reduced. (iii) Water is acting as a reducing agent. (iv) Water is acting as an oxidising agent.
- (i), (ii) and (iii)
- (iii) and (iv)
- (i), (ii) and (iv)
- (ii) and (iv)
- Q2. In a double displacement reaction, which of the following is typically observed?
- Evolution of heat
- Formation of a precipitate
- Change in temperature only
- Change in state of matter without new substance formation
- Q3. The process of respiration is a type of ____ reaction.
- Q4. When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is formed and sulphuric acid is produced. The reaction is an example of a:
- Combination reaction
- Displacement reaction
- Double displacement reaction
- Redox reaction
- Q5. Why is it important to balance chemical equations?
+ 5 more in the printable PDF.