B S Bisht, R D Madan and, Nelson A Petrie Solutions for Chapter: Chemical Changes and Reactions, Exercise 1: Questions
B S Bisht Chemistry Solutions for Exercise - B S Bisht, R D Madan and, Nelson A Petrie Solutions for Chapter: Chemical Changes and Reactions, Exercise 1: Questions
Attempt the practice questions on Chapter 2: Chemical Changes and Reactions, Exercise 1: Questions with hints and solutions to strengthen your understanding. S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9 solutions are prepared by Experienced Embibe Experts.
Questions from B S Bisht, R D Madan and, Nelson A Petrie Solutions for Chapter: Chemical Changes and Reactions, Exercise 1: Questions with Hints & Solutions
Fill in the blanks with the correct answers in the following statement:
Dissolving common salt in water is an example of a _____ change.
Name the gases added to the air by:
Decay or fermentation
Name the gases added to the air by:
Photosynthesis.
Name the gases removed from the air:
Combustion
Name the gases removed from the air:
Photosynthesis.
In which of the following substances can there be an increase in weight when exposed to air?
1. Sodium chloride
2. Iron
3. Concentrated sulphuric acid
4. Sodium carbonate crystals
In which of the following substances can there be a decrease in weight when exposed to air?
1. Sodium chloride
2. Iron
3. Concentrated sulphuric acid
4. Sodium carbonate crystals
In which of the following substances can there be: no change in weight when exposed to air?
1. Sodium chloride
2. Iron
3. Concentrated sulphuric acid
4. Sodium carbonate crystals
