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INTRODUCTION : You have studied about chemical hazards in Unit 13 of Block-3 and would have learnt that many chemicals are hazardous. A good practice is to exercise caution in handling all chemicals and minimize your exposure to them.
Further, you would have realised that the labels on the containers / bottles of the chemicals carry a great deal of important information regarding the nature of the chemicals, their important physical properties, potential risks and corresponding warning symbols besides statutory instructions regarding safe usage. A familiarity with the use/interpretation of labels so as to identify the potential hazard of a chemical and the precautions to be taken in handling and storage of chemicals are very important for everybody working in the laboratory. Fume cupboard is an important component of a chemical laboratory. Knowledge about when and how to use a fume cupboard is also important for a laboratory worker. This exercise has been designed keeping these objectives in mind. It consists of two activities. The first activity is a familiarization activity. It gives you a chance to look into the label of some common chemicals and interpret the same to get information about the chemicals. The second activity is a demonstration activity. In this activity, your counsellor would demonstrate how fume cupboard is useful in handling of hazardous chemicals and their reactions.
Give the properties and applications of Bakelite. This is most common type of phenol formaldehyde. This is hard, thermosetting, dark coloured material. Its major properties
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plz give me concept
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If the atmosphere had a constant temperature of 20C and constant density, how high would the air extend above sea level? Would Mt. Everest, and 10km in elevation, protrude beyond
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