Take a plastic mug Drill two holes at itsbase and fit rubber stoppers in these holes,Oxygen ,Insert carbon electrodes in these rubberstoppere as shown in Fig. 1.6.Test tube- Conneet these eleetrodes to a 6 voltbatteryGraphite rod# Fill the mug with water such that theclectrodes are immerned. Add a few dropsof dilute sulphuric acid to the water,Take two test tubes filled with water andAnodeInvert them over the two carbon electrodes.* Switch on the current and leave theapparatus undisturbed for some time,# You will observe the formation of bubblesat both the electrodes. These bubbles displace water in thetest tuben.Is the volume of the gas collected the same in both the test tubes?Once the teet tubes are filled with the respective gases, removethem carefully,Test these gases one by one by bringing a burning candle closeto the mouth of the test tubes,CAUTION: This step must be performed carefully by the teacher,What happens in each case?Which gas is present in each test tube?​