What would you observe in the following case: Sugar crystals are added to hard glass test tube containing concentrated sulphuric acid.
What would you see, when a crystal of CuSO4.5H2O is placed in concentrated sulphuric acid? Give reason to explain your observation.
What do you observe when barium chloride solution is added to dilute sulphuric acid?
How will you prepare 100 times dilute solution from 1 ml concentrated sulphuric acid solution ? What precaution would you suggest and why ?