Question 1 What is an indicator? Question 2 Name the common indicators used to test acid,bases and salts? Question 3 What are olfactory indicators.Give examples? Question 4 What is the colour of Phenolphthalein in acidic and basic medium? Question 5 What is the colour of methyl orange in acidic and basic medium? Acid,Bases and Salts On the basis of chemical … [Read more...] about Indicators
Acid Bases and Salts
Water of crystallisation
Question 1 What is meant by water of crystallisation? Give example? Question 2 What are hydrated salts? Question 3 What are anhydrous salts? Question 4 Name a compound which contains two molecules of water of crystallisation? Question 5 Why copper sulphate is blue in colour? Water Of Crystallisation The water molecules which form part of the structure of a … [Read more...] about Water of crystallisation
Plaster of Paris
Question 1 Write the chemical formula and name of plaster of paris? Question 2 What is gypsum? Question 3 Name the calcium compound which hardens on wetting with water? Question 4 What will happen if heating is not controlled while preparing plaster of paris? Question 5 Name the compound which is used in hospitals for setting fracture bones? Question 6 How … [Read more...] about Plaster of Paris
Bleaching powder
Question 1 A white powdery substance having strong smell of chlorine is used for disinfecting drinking water supply at water works. Identify the substance? Question 2 Write the chemical name and formula of bleaching powder? Question 3 How is bleaching powder prepared. Give the chemical equation? Question 4 State uses of bleaching powder? Question 5 List few … [Read more...] about Bleaching powder
Baking soda
Question 1 Write the chemical name and formula of baking soda? Question 2 Give uses of baking soda? Question 3 Describe how baking soda is produced on a large scale? Question 4 Name the gas evolved when baking soda is heated? Question 5 What is baking powder? Question 6 Give few properties of baking powder? Baking Soda The chemical name of baking soda is … [Read more...] about Baking soda