Tests Of Water
Water of Class 7
- Water turns white coloured anhydrous copper sulphate to blue coloured hydrated copper sulphate. (CuSO4.5H2O)
- Blue coloured anhydrous cobalt chloride turns pink on addition of water due to the formation of cobalt chloride hexahydrate (CoCl2.6H2O)
NCERT SOLUTIONS FOR CLASS-7 SCIENCE (Science for grade-7 NCERT solutions)
Chapter 1 - Nutrition in Plants
Chapter 2 - Nutrition in Animals
Chapter 5 - Acids, Bases and Salts
Chapter 6 - Physical and Chemical Changes
Chapter 7 - Weather, Climate and Adaptations of Animals to Climate
Chapter 8 - Winds, Storms and Cyclones
Chapter 10 - Respiration in Organisms
Chapter 11 - Transportation in Animals and Plants
Chapter 12 - Reproduction in Plants
Chapter 14 - Electric Current and Its Effects
Chapter 16 - Water: A Precious Resource
Chapter 17 - Forests: Our Lifeline
- Introduction
- Distribution of water on earth
- Necessity Of Water
- Occurrence Of Water
- Physical Properties Of Water
- Chemical Properties Of Water
- Action Of Water On Metals
- Action Of Water On Non- Metals
- Tests Of Water
- World water day
- Water Cycle
- Groundwater
- Depletion of water table
- Water management
- Mind map
- Exercise - 1
- Exercise - 2
- Exercise - 3
- Exercise - 4
