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Floating in different liquids
Obtain a tall, slender glass jar, test tube or bottle, and the following liquids: mercury, carbon tetrachloride, water and kerosene. You will also require a small iron or steel ball such as a ball bearing, or iron nut or bolt; a small piece of ebony or some other wood that sinks in water; a piece of paraffin wax; and a piece of cork. First pour some mercury into the glass jar, then some carbon tetra- chloride, some water and some kerosene.
High voltage power supply
Floating bodies Fill the overflow can with water and let it run out unless the surface is level with the spout. Select a piece of wood that floats half or more submerged in the
Q.How is soil formed? Soil is formed by breaking down of rocks at or near the surface of the Earth through various physical, chemical, and biological processes by various factor
Biological evolution We can presume that biological evolution began with the formation of the first true cells. These must have been forms that did not require free oxygen
AIDS: You have learnt about infectious diseases. For centuries, death from infectious diseases was common and whole populations were often affected. One of the remarkable achi
How are babys produced
Question 1: (i) Show a diagram to show how temperature varies with altitude. Show clearly the location of the tropopause, stratopause and mesopause. (ii) Briefly explain the
What is an old wives'' tale
HOW TO ORGANISE AN INTERACTION SESSION: How should we begin? What are the norms? What is the time slot? Any assessment criteria? These and many such questions may be coming to you
Big bang theory is failed ...Why???
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