Advertisements
Advertisements
प्रश्न
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Copper nitrate.
Advertisements
उत्तर
Solid residual product of thermal decomposition of:
| Copper nitrate is copper oxide | \[\ce{CuO}\] | Black |
APPEARS IN
संबंधित प्रश्न
FILL IN THE BLANK
Negatively charged ions are called ..........
Balancing a chemical equation is based on
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Sodium chloride
Name affects the acidified K2Cr2O7 paper and also turns lime water dirty milky.
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
Select the correct answer for the following options:
The pale blue precipitated obtained when copper [II] sulphate reacts with sodium hydroxide.
A chemical reaction is often accompanied by external indications or characteristics which include –
- Colour change
- Effervescence or gas evolved
- Evolution or absorption of heat
- Formation of a precipitate.
With reference to each of the above indications, state the external indication seen during – Addition of water to quicklime.
Complete the table given below.
| Addition of dil. H2SO4 to FeS | Odour of gas evolved |
Which of the following statement is incorrect for a chemical reaction?
______ are substances that speed up the process of a chemical change and it will not undergo any change during the course of the reaction.
