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

How will you separate sand and water from their mixture?

You have been provided with three test tubes. One of them cotains distilled water and the other two cotain an acidic solution and a basic solution, respectively. If you are given only red litmus paper , how will you identify the contents of each test tube ?

How will you synthesise acetone from acetaldehyde ?

How would you test the presence of starch in leaves?

How do you estimate ozone quantitatively?

How will you convert benzene to m-dinitro benzene ?

If the price of a product in the mall is 498.80 and it is available at a discount of 15% then how would you estimate the amount to be paid?

How will you convert acetophenone to phenacyl bromide ?