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Floating a needle on water
Thoroughly dry a steel needle. Place it on the tines of a dinner fork and gently smash the surface of the water in a dish with the fork. If you are careful the needle will float as you take the fork away. Look at the water surface closely. Can you see how the surface film seems to curve under the weight of the needle ?
Explain the term - hydrolysis yield ammonium ion In addition to ammonium compounds, materials such as urea which, upon hydrolysis yield ammonium ion, are again a potential sour
INTRODUCTION : You would recall from your study of Unit 11 that LPG (liquefied petroleum gas) and other compressed gases can pose a danger in the lab. The gas (LPG) supply distrib
Explain Ways How Immune System Protect Us 1) It creates a barrier that prevents bacteria and viruses from entering our body. 2) If a bacterium or virus does get into the b
A nearly horizontal,12 ft wide rectangular channel carries 60cfs at a depth of 3.0ft.The width of the channel is smoothly contracted to 6 ft at the downstream section. (a) Deter
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Explain in detail about the Viruses Viruses are the ultramicroscopic parasites which always require a living h ost for their multiplication. Since they are much smaller than ba
Question 1 What is medical negligence? Explain with examples 2 Explain the following >>Subpoena >>Medical lien
Personal safety : You would recall that there are mainly three routes through which the harmful substances can enter the human body. These are, direct contact followed by penetrat
describe the factors which decide the broad area of scientific activity
Define the both macronutrientand micronutrient. An element necessary in large amounts (usually > 50 mg/kg in the plant) for the growth of plant is called a macronutrient and in
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