S P Singh Solutions for Chapter: Chemical Changes and Reactions, Exercise 1: EXERCISE 2(A)
S P Singh Chemistry Solutions for Exercise - S P Singh Solutions for Chapter: Chemical Changes and Reactions, Exercise 1: EXERCISE 2(A)
Attempt the practice questions on Chapter 2: Chemical Changes and Reactions, Exercise 1: EXERCISE 2(A) with hints and solutions to strengthen your understanding. Concise Chemistry Class 9 solutions are prepared by Experienced Embibe Experts.
Questions from S P Singh Solutions for Chapter: Chemical Changes and Reactions, Exercise 1: EXERCISE 2(A) with Hints & Solutions
Write a chemical reaction where the following change is observed.
Gas is evolved.
Write a chemical reaction where the following change is observed.
Colour change is noticed.
Write a chemical reaction where the following change is observed.
A precipitate is formed.
Write a chemical reaction where the following change is observed.
The physical state of reactants is changed.
Give reason for the following :
Silver nitrate solution is kept in coloured bottles.
Give reason for the following:
Molybdenum is used in the manufacture of ammonia.
Give reason for the following:
The blue solution of copper sulphate changes to green when a piece of iron is added to this solution.
Give reason for the following:
Colourless concentrated sulphuric acid in a test tube changes to blue on adding a small piece of copper to it.
