Answer the following :- You are given a thread and a metre scale. How will you estimate the diameter of the thread ?

How will you define the mass?

Answer the following : How many metres make one kilometre?

How will you define fruit?

You are given an iron strip. How will you make it into a magnet?

You are given a mixture of common salt and chalk powder .How will you seprate its components ?

If you are given a mixture of hydrogen and carbon dioxide, how would you remove the carbon dioxide gas ?

Read the bar graph which shows the number of books sold by a bookstore during five consecutive years and answer the following questions: Can you explain how you would estimate the number of books sold in 1989?