Amarnath Mishra, Geeta Mehta, Deepti Lehri and, Rajesh Mohan Solutions for Chapter: Changes and Reactions, Exercise 1: Exercises
Amarnath Mishra Science Solutions for Exercise - Amarnath Mishra, Geeta Mehta, Deepti Lehri and, Rajesh Mohan Solutions for Chapter: Changes and Reactions, Exercise 1: Exercises
Attempt the free practice questions on Chapter 3: Changes and Reactions, Exercise 1: Exercises with hints and solutions to strengthen your understanding. Basic Science For Class 7 solutions are prepared by Experienced Embibe Experts.
Questions from Amarnath Mishra, Geeta Mehta, Deepti Lehri and, Rajesh Mohan Solutions for Chapter: Changes and Reactions, Exercise 1: Exercises with Hints & Solutions
In what type of reaction do two or more reactants combine to form a product? (Combination / Displacement / Endothermic)
In what type of reaction does one substance break down into two or more simpler substances? (Combination reaction/ decomposition reaction/ displacement reaction).
In what type of reaction do one element displaces another from a compound and takes its place in the compound?
In what type of reaction does an acid react with a base to form a salt and water? (neutralization reaction/ combination reaction)
During which of the following changes are new substances formed?
Rusting takes place in _____.
In which of the following process is light absorbed?
Match the columns A and B.
| A | B | ||
|---|---|---|---|
| (a) | Neutralization reaction | (i) | Burning of carbon |
| (b) | Displacement reaction | (ii) | Formation of carbon dioxide when baking soda is heated |
| (c) | Decomposition reaction | (iii) | Deposition of copper when an iron nail is placed in a solution of copper (II) sulphate |
| (d) | Combination reaction | (iv) | Formation of sodium chloride and water when hydrochloric acid reacts with sodium hydroxide. |
