Questions on Practical chemistry CLASS 10 ICSE

Questions on Practical chemistry 

CLASS 10 ICSE

1. A compound 'X' is a water soluble salt. When Lead nitrate solution is added to the aqueous solution of the salt 'A', it gives a white ppt. which dissolves on heating. 

And salt 'A' gives golden yellow flame in flame test. Name of the salt 'A' is ___________

2. When a highly soluble gas 'G' is dissolved in water, it forms it's aqueous solution. This aqueous solution gives a deep blue solution when added in excess to Copper sulphate solution. Name of the gas 'G' is ____________.

3. Compound 'C' is a preferred reactant in the laboratory preparation of Ammonia gas from Ammonium salts. State the appropriate observation when Sodium hydroxide solution is added to the aqueous solution of the salt, formed when Compound 'C' is neutralized by dil.HCl

____________________