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 properties … [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
Washing soda
Question 1 What is the chemical name and formula of washing soda? Question 2 What is soda ash? Question 3 Name a metal compound which has detergent properties? Question 4 Name a sodium compound used for making borax and glass? Question 5 Explain the preparation of washing soda by solvay's process? Question 6 Give uses of washing soda? Question 7 Give few … [Read more...] about Washing soda
Sodium hydroxide
Question 1 Write the chemical name and formula of caustic soda? Question 2 What happens when a concentrated solution of sodium hydroxide is electrolysed.Write the equation involved? Question 3 Name the raw material used for the caustic soda? Question 4 List the uses of caustic soda? Question 5 What is a brine solution? Sodium Hydroxide It is commonly known as … [Read more...] about Sodium hydroxide
Common salt
Question 1 What is a salt?Give example? Question 2 Give the name and formula of any two salts.Also name the acids from which they are formed? Question 3 What is meant by family of salts? Question 4 Write the chemical name and formula of common salt? Question 5 How is common salt obtained from sea water? Question 6 What name is given to the common salt which is … [Read more...] about Common salt
Importance of pH in everyday life
Question 1 What happens during a honey bee sting.What is its remedy? Question 2 Under what soil conditions do you think a farmer would treat the soil of his field with quicklime? Question 3 What happen if there is an excess of acid in the stomach.How can its effects be cured? Question 4 Explain the pH change as the cause of tooth decay? Question 5 How can tooth … [Read more...] about Importance of pH in everyday life
Universal Indicator
Question 1 What are universal indicators? Question 2 For what purpose a universal indicator is used? Question 3 Water is neutral.What colour will you get when you add few drops of universal indicator to a a test tube containing water? Question 4 A solution X and Y is tested with universal indicator. X turns orange whereas Y turns red.Which solution is a stronger … [Read more...] about Universal Indicator