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Hazard Identification : Each United Nations hazard class (with the exception of class 9) has a distinctive diamond shaped label bearing a pictogram for quick hazard recognition. Figure gives a colour chart for all the classes and subclasses.
Each label has a characteristic background colour. These colours convey the nature of different chemical substances as given below.
Colour Nature
Orange Explosive
Red Flammable
Blue Water reactive
Yellow Oxidiser
White Toxic or Infectious
White or Yellow and White Radioactive
Black and White Corrosive
All the classes are discussed briefly in the following paragraphs.
Decay of Arab Culture and Science: The association of science with kings, wealthy merchants and nobles which was initially very fruitful, ultimately proved to be the weakness
What is a covalent crystal? A covalent crystal is one in which the lattice structure is held together by powerful covalent bonds. These crystals tend not to be soluble in water
What is an ionic crystal? An ionic crystal is one in which ionic bonds form the structure, or lattice, of the crystal. The ions that come together to form these structures must
Ask question #Minimum 100 wordsaccepted# examine the relationship between logic and philosophy
least atomic volume
Food allergies: Food allergies are different from food fads. Certain fds seem to have strange reactions on some people. Probably, you have come across a person who got skin ra
define carbohydrates.give a brief account on classification of carbohydrates.
Explain Emphysema - Histotoxic Hypoxia Emphysema is a chronic respiratory disease where there is an over- inflation of the air sacs (alveoli) in the lungs, causing a decrease i
Heterospermy
Cis-isomer : Both hydrogen atoms located on the same side of the double bond.
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