There are three cans one of them holds exactly 10 litres of milk and useful the other two can hold a 7 litres and 3 litres respectively then no graduation mark on the cans customer ask for 5 litres of milk how would you give him the amount he ask he would not be satisfied by estimates​.

One the basis of this test, how do you classify the aqueous solution acidic or basic?

If you are provided with two tubes (A and B). Where one is narrow and the other is relatively wider and if both are immersed in a beaker containing water as shown in the figure. Why does B show higher water rise than A?

What do you feel? Has the beaker become hot? Test the solution with red and blue litmus papers. Is the solution acidic or basic.

What do you feel? Has the beaker become hot? Test the solution with red and blue litmus papers. Is the solution acidic or basic.

• Take a plastic mug. Drill two holes at its base and fill rubber stoppers in these holes. Insert carbon electrode in these rubber stoppers as shown in Fig. • Connect these electrodes to a 6 volt battery. • Fill the mug with water such that the electrodes are immersed. Add a few drops of dilute sulphuric acid to the water. •Take two test tubes filled with water and invert there over the two carbon electrodes. Switch on the current and leave the apparatus undisturbed for some time. • You will observe the formation of bubbles at both the electrodes. These bubbles displace water in the test tubes. Which gas is present in each test tube ?

• Take a plastic mug. Drill two holes at its base and fill rubber stoppers in these holes. Insert carbon electrode in these rubber stoppers as shown in Fig. • Connect these electrodes to a 6 volt battery. • Fill the mug with water such that the electrodes are immersed. Add a few drops of dilute sulphuric acid to the water. •Take two test tubes filled with water and invert there over the two carbon electrodes. Switch on the current and leave the apparatus undisturbed for some time. • You will observe the formation of bubbles at both the electrodes. These bubbles displace water in the test tubes. Is the volume of the gas collected the same in both the test tubes ?

• Take a plastic mug. Drill two holes at its base and fill rubber stoppers in these holes. Insert carbon electrode in these rubber stoppers as shown in Fig. • Connect these electrodes to a 6 volt battery. • Fill the mug with water such that the electrodes are immersed. Add a few drops of dilute sulphuric acid to the water. •Take two test tubes filled with water and invert there over the two carbon electrodes. Switch on the current and leave the apparatus undisturbed for some time. • You will observe the formation of bubbles at both the electrodes. These bubbles displace water in the test tubes. What happens in each case ?

You have two solutions a and b the ph of solution a is 6 and ph of solution b is 8. which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?

Three liquids are given to you. One is hydrochloric acid, another sodium hydroxide and third is a sugar solution. How will you identify them? You have only turmeric indicator.