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Softening water with chemicals
Try making suds with a half test tube of hard water and a few drops of soap solution. Next boil a same sample and again try to make suds by using the similar amount of soap solution.
PRECAUTIONS FOR FIRE PREVENTION : In the event of fire or explosion occurring there should be a prearranged plan of the necessary action to be taken. All personnel must be made aw
ACCIDENT REPORTING To start with, let us explain two closely related words, accident and incident. Accident is an unexpected or unplanned event. It may cause i) Harm to s
what are the organs of respiration in the lower form of animals?
Control of Environment: Control of environment is essential for maintaining good health. Environmental factors which are basic to individual and community health are housing
how does reproduction help the white lipped tree frog survive
Explain the Structure and Functions of Liver The liver is enclosed in a thin capsule and is completely covered by a peritoneum. The liver is described as having four lobes. As
Describe the factors which decide the broad area of Scientific activity?
what are characteristics of resistance
Define Systemic Physiology - physiology of growth and development There is a change in the blood count and rate of haemoglobin (Hb) production during the early days. Cardiovasc
Explain the Autonomic Nervous System (ANS) The autonomic or involuntary part of nervous system controls the functions of the body carried out automatically i.e. initiated in th
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