How will you arrange a plane mirror inside water tray to see the different colour in sunlight in your class-room ?

How do you use the method of chromatography to find out what different colours are present in a coloured chalk?

How can you get your own distilled water in laboratory?

How will you appreciate the co-ordination among different organs of your body?

Think about the objects which acts as a concave or convex mirrors in your surroundings. Make a table of these objects and display in your class room.

How can you conserve water in your home?

In how many ways 20 different coloured flowers can be arranged into a garland by taking 10 at a time so that 2 specified colours must occur in the garland but not come together

Refer to the Activity 3 in the chapter. Start with distilled water. The LED would not glow. Add two drops of some acid to distilled water and check the glow of LED. Add two more drops and check the intensity of the glow. Repeat the activity 5 to 6 times by adding 2 drops of the same acid each time. Do you see any difference in the intensity of glow with increasing acid content of water? What can be inferred from the above observations? Repeat the entire activity by taking a solution of baking soda and adding drops of it to distilled water instead of acid. Write differences and similarities. (AS_(3),AS_(1))

How do you observe the diffusion of coffee powder in water ? Write your findings.

How do you separate O_2 and H_2 from water in your chemical laboratory?