Advertisements
Advertisements
प्रश्न
Give one example electrochemical reaction.
Give an example electrochemical reaction.
Advertisements
उत्तर
Acidulated water breaks into hydrogen and oxygen.
\[\ce{2H2O ->[Electricity] 2H2 + O2}\]
संबंधित प्रश्न
When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.
How do the following help in bringing about a chemical change?
catalyst .
Explain the following reaction with one suitable example of Decomposition reaction
Give a word equation for the following reaction.
An exothermic reaction where both the reactants are gases, one of which is oxygen.
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 a black residue and evolves two gases one of which is acidic and coloured and the other neutral and colourless.
What kind of a change is associated with decaying of a plants?
What is the role of a catalyst in a chemical reaction?
A reaction between an acid and a base is called ______.
Which of the following is/are true when milk changes into curd?
- Its state is changed from liquid to semi solid.
- It changes colour.
- It changes taste.
- The change cannot be reversed.
Choose the correct option from below:
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Can you change rust back into iron by some simple method?
