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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 ?
Fission, and fusion energy: 'The Italian navigator has arrived in the new world' This coded message announced the beginning of the atoyic age on 2nd December? 1942. The 'n
Management of Forest Resources: Considering the ever growing demand of wood and realising the importance of conserving our forest resources, it has become necessary to find alt
The Water Cycle: The importance of water is obvious to everyone. Water is synonynlou. with life. The most comnlon substance in the body of iinv organism is water. It is al
Give Some examples of minerals used in everyday life? There are many minerals that are used in everyday life. We will discuss a few common examples of minerals and how they ar
Define age related changes in Cardiovascular system There is a decrease in elasticity of the aorta and other large arteries as age increases. Thickness of blood vessels increas
Explain the Counter Current Mechanism? What is counter current mechanism? Counter current mechanism is the mechanism by which the kidneys produce osmotically concentrated urine
What is tocopherols Vitamin E refers to a group of compounds known as which are the derivatives of a parent compound called as 'tocol'. Four tocopherols namely a, P,
Explain the Function of Saliva -Taste Food substances, mixed with saliva stimulate the taste buds. Saliva acts as a solvent and is essential for the sensation of taste.
how does fungusreproduce
Explain the Hyposecretion or Hypothyroidism in Adult Life Decreased secretion of thyroid hormone results in the development of myxoedema. There is a slowing of mental and physi
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