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Chemical reactivity : The substances which react violently or produce flame on contact with water can be given suitable chemical treatment to convert them into nonreactive form before running into the drainage.
Example: Sodium metal.
Those substances which generate heat on mixing with water are treated carefully with large quantity of water in a safe area.
Example: Calcium oxide.
Acidic chemical wastes are first treated with large quantity of sodium carbonate anddhen with a large quantity of water. The treatment with sodium carbonate neutralises the acid since the former is a base.
Freezing by Contact with a Cooled Solid-Plate Freezing In this method, the product is sandwiched between metal plates and pressure is usually applied for good contact. Plate
Structure of Atoms Elements are pure substances. Elements are composed of a single kind of atom, as opposed to compounds which contain two or more kinds of atoms (see lesson 5).
#question: Describe the factors which decide the broad area of Scientific activity ?
QUESTION 1 (a) What is the main objective of the Occupational Safety and health Act 2005? (b) State 6 other objectives. Briefly describe them. QUESTION 2 (a) What cr
Explain in detail about the Sedimentary rocks Sedimentary rocks are formed from the breakdown of igneous rocks. These rocks are broken apart by plant roots, ice wedges, and
i have to fill in the blanks on a cyclical version of the scientific method
Aldose-ketose isomerism We have already seen that in a monosaccharide either an aldehyde (-€HO) or a ketone (>C=O) group is present. The former is called as aldos
Introduction : In any laboratory dealing with biological experiments, hazards can occur mainly due to chemicals and biological materials. In the previous exercise you have done th
Question 1 Discuss the history of quality in healthcare services Question 2 Explain the dimensions of quality in healthcare Question 3 Describe NABH Accreditation
Intrusion into the Nitrogen Cycle: Human intervention can disturb the nitrogen cycle. Let us see how. When we grow and harvest crops. there is loss of nitrogen from the soi
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