Write the structure of a straight chain and a ring hydrocarbon having four carbon atoms.

Arrange the objects as shown in the figure and conduct the experiment. Based on your observation, what is the conclusion that you reach at ?

Lighted candles of different lengths are arranged in a trough as shown in the figure. Pour a saturated solution of sodium bicarbonate (baking soda) into the trough. Add a little vinegar to the solution. What do you observe? Give reasons for the observations.

Prepare a write-up, on the topic "Importance of the organic chemistry".