Give 5 examples of natural and artificial fibres.
Advantages and disadvantages of science
Define one newton force
What are the methods of reducing friction ? Explain
What is the chemical name of dry ice? Why is it called dry ice?
Explain the working of soda acid type fire extinguisher
What are the health hazards of wool industry workers ?
What is a soda acid fire extinguisher ?
What is meant by wildlife? How is wildlife important for us ?
why we yawn when we are sleepy or drowsy
What is tincture of iodine? Identify the solute and solvent in it.