Advertisements
Advertisements
प्रश्न
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Copper nitrate.
उत्तर
Solid residual product of thermal decomposition of:
Copper nitrate is copper oxide | \[\ce{CuO}\] | Black |
APPEARS IN
संबंधित प्रश्न
What are (i) positive catalysts and (ii) negative catalysts? Support your answer with one example for each of them.
Give reason .
A person suffering from acidity is advised to take an antacid.
FILL IN THE BLANK
The new substances formed during a chemical reaction are called the ..................
Write true or false .
A black residue is formed when sugar is heated .
Explain the following reaction with one suitable example of Combination reactions .
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
To prevent rusting, a layer of ______ metal is applied on iron sheets.
Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.
Water
Give an example of a reaction where the following are involved
Electricity
Give an example of a reaction where the following are involved:
Close contact
Name: A greenish-yellow gas.
Distinguish by dilute sulphuric acid.
Sodium Sulphite and sodium carbonate?
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 – Thermal decomposition of mercury [II] oxide.
Explain the term chemical reaction with special reference to reactants and products.
Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.
Lead nitrate.
Explain the following statement: Digestion is a chemical change.
Mention the various conditions required for a chemical reaction to occur.
When an aqueous solution of potassium chloride is added to an aqueous solution of silver nitrate, a white precipitate is formed. Give the chemical equation of this reaction.
Write the equation for the process of formation of rust.
Both CO2 and H2 gases are ______.
______ is the chemical name of rust.