Q. 34.8( 6 Votes )
British chemist, William Nicholson had shown that if electrodes were immersed in water and a current was passed, bubbles of oxygen and hydrogen were produced. What do your understand by bubbles of hydrogen and oxygen?
When current is passed through water, the bubbles of Hydrogen and Oxygen are produced. This confirms the chemical effect of electric current. It shows that chemical reactions take place when current is passed through an electrolyte.
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A beaker contains an acidified copper sulphate solution. A copper plate and a carbon rod are kept in this copper sulphate solution. The copper plate is connected to the positive terminal of a battery whereas the carbon rod is connected to the negative terminal of the battery. What will you observe when an electric current is passed through this set-up for a considerable time?Lakhmir Singh & Manjit Kaur - Science
State some of the characteristics of chemical changes brought about by the chemical effect of electric current.Lakhmir Singh & Manjit Kaur - Science
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(a) when a torch bulb is used?
(b) when a compass is used?Lakhmir Singh & Manjit Kaur - Science
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