Take some finely powdered salt (not crystals) and keep it in two different jars.
Which shape does the powdered salt take?

Powdered salt is a

Which reaction does take place with oxygen ?

What shape does the water take if it spill on the floor ?

The number of different signals which can be given from 7 different coloured sheets, taking one or more at a time is

Why are finely powdered substances more effective adsorbents than their non powdered crystal forms ?

Take a glass jar and fill with soil. Show a bean seed near the wall of the jar. After 4 - 5 days you will notice seed germination. Keep the jar under the sun. Observe how root and shoot grows. Then tilt the glass jar and keep the plant horizontally. Observe the direction of the root and shoot growth for more than a week iii) Do you find any differences in the shape of epidermal cells?

Latha take some quantity of powder of a substance in a test tube. Heated it with spirit lamp. A gas was liberated. She sends the gas into another test tube. The colour of solution in the second test tube turned into milk white. Which substance was heated? Which gas is liberated? What was the solution taken in second test tube? Which type of chemical reactions involved the experiment?

Bleaching powder is a mixed salt of

How do you separate the mixture of napthalene powder and salt powder ?

Can we use distillation process for separating mixture of powdered salt and camphor?