Advertisements
Advertisements
प्रश्न
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A coloured substance which leaves on strong heating a black residue and evolves two colourless gases one of which is acidic and the other neutral.
Advertisements
उत्तर
Copper sulphate [CuSO].
APPEARS IN
संबंधित प्रश्न
Give reason .
A person suffering from acidity is advised to take an antacid.
A solution of a substance ‘X’ is used for white washing Name the substance ‘X’ and write its formula.
Out of sodium and sulphur which is a metal? Explain its reaction with the oxygen.
Choose the correct option from the bracket and explain the statement giving a reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
Addition of an aqueous solution of ZnSO4 to an aqueous solution of BaCl2 is an example of ______ reaction.
Give an example of a reaction where the following are involved
Electricity
What do you observe when dilute sulphuric acid is added to the following:
Sodium Sulphide
Give a word equation for the following reaction.
Two solids which combine on heating, to give a liquid.
What is a chemical reaction?
What is the role of a catalyst in a chemical reaction?
Match the following:
| 1. | Sodium Chloride | a. | CaSO41/2H2O |
| 2. | Calcium sulphate dihydrate | b. | C2H5Oh |
| 3. | Magnesium sulphate hydrate | c. | CaSO4.2H2O |
| 4. | Calcium sulphate hemihydrate | d. | NaCl |
| 5. | Phenol | e. | MgSO4.H2O |
