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INTRODUCTION : You read about the fire hazards, general precautions and remedial measures in case of an outbreak of fire in the previous unit. In this unit you will learn about two other common hazards. These are the hazards because of radiation and chemical substances i.e., substances hazardous to health. The radiation hazard is generally common in a physics laboratory; however, it is equally important for a biology or chemistry technician who has to handle radioactive isotopes, used as tracers. On the other hand a chemical hazard is more likely in chemistry or a biology laboratory; yet it cannot be ignored in a physics laboratory. Therefore proper attention should be given by all the staff working in a laboratory to these hazards. In the next unit you will study about the hazards in a biology laboratory.
the structures that makes up a cell are called
what is meaning of solid'' liguid'' gases?why eresers float in water?why deos paper sink in water?
Diseases due to Protein-Calorie malnutridon : The developing countries of the world today are faced with diseases due to Protein-Calorie malnutrition. The most affected group a
The Survey Committee Recommendations The Survey Committee, consisting of the following three members, surveyed Chemistry1 Physics/Botany/Zoology laboratory for identifying unse
Explain the Spinal Nerves As mentioned earlier, there are 31 pairs of spinal nerves that leave the vertebral canal by passing through the intervertebral foramina formed by adja
Objectives After you do this exercise, you should be able to 1. Prepare a list of unserviceable and obsolete items to be disposed of, after 2. Indicating the reserve pric
A stone seems to weigh less in water Weigh a large stone on a pair of kitchen scales. Put a loop of heavy string around the stone and weigh it again suspended in a pail of wate
How are electrons arranged around the nucleus? Electrons are arranged into very specific rings known as orbitals. Electron orbitals, sometimes referred to as electron shells, c
What are Fatty acids Fatty acids are grouped into two classes, saturated and unsaturated fatty acids. The terms 'saturated' and 'unsaturated' fatty acid may not be new to yo
Important physico-chemical properties of niacin and niacinamide are as follows: a) Niacin is a white crystalline solid. b) While niacin is sparingly soluble in water, etha
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