Arrange the following steps in a sequential order to demonstrate the expansion of gases
(a) Heat the test tube and observe the position of coloured drop in the narrow galss tube
(b) Take a drop of coloured liquid in to naroorw galss tube
(c ) Take an empty test tube fit its mouth wiht one holed cork stopper
(d) Fit the narrow glass tube through the cork os that the level of the coloured drop is just above the cork
(e ) The ari in the tube expands and pushes the colured drop in the narrow tube upwards

Options

A. BCADE
B. CBDAE
C. BADCE
D. CADEB

Answer

B

Explanation

Take an empty test tube, fit its mouth with one holed cork stopper. Take a drop of coloured liquid into a narrow glass tube. Fit the narrow glass tube through the cork so that the level of the coloured drop is just above the cork. Heat the test tube and observe the position of coloured drop in the narrow glass tube. The trapped air in the test tube expands and it pushes the coloured drop upwards.