Questions
B S Bisht Chemistry Solutions for Exercise - Questions
Simple step-by-step solutions to Questions questions of Chemical Changes and Reactions from S. Chand's ICSE CHEMISTRY Book -1 CLASS- 9. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from 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:
Photosynthesis.
Name the gases removed from the air:
respiration
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
