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प्रश्न
Give one example electrochemical reaction.
Give an example electrochemical reaction.
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उत्तर
Acidulated water breaks into hydrogen and oxygen.
\[\ce{2H2O ->[Electricity] 2H2 + O2}\]
संबंधित प्रश्न
Write the missing reactants and products and balance the equations.
................+ HCI `→` NaCI + `"H"_2"O"` + .........................
Fill in the blank
A change in which the substance can be brought back to its original state is called a _______ change.
Write true or false :
When potassium iodide solution is added to lead acetate solution a red precipitate is formed.
Name the type of chemical reaction shown by the following equation:
NaOH + HCl → NaCl + H2O
Give a chemical test to distinguish between the following gases.
NH3 and SO2
A bag of cement lying in the open gets wet due to rain during the night. The next day the sun shines brightly. Do you think the changes, which have occurred in the cement, could be reversed?
Chemical change is a temporary change.
Which of the following are chemical changes?
(i) Decaying of wood
(ii) Burning of wood
(iii) Sawing of wood
(iv) Hammering of a nail into a piece of wood
Write the equation for the process of formation of rust.
When milk is mixed with coffee decoction, the colour of milk and decoction changes due to ______.
