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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.
Miller's Experiment The above theory could be tested by recreating in the laboratory on a small scale, the conditions which must have existed when life originated on the
Chemical Reactions of Amino Acids The chemical reactions of amino acids can be divided into three classes: i) Reactions of carboxylic group ii) Reactions of amino group
The hospital Human Research Ethics Committee granted approval for the study protocol. Participants provided written informed consent. All participants were all over the age of 18 a
how to prevent skin problems?
Rancidity:- Formation of aldehyde due to oxidation of unsaturated glycerides.
what is thermal velocity ofa material
Food Chain: As you know from the discussion of the previous subsection, one of the ways in which the organisms are related is through food, that is, one organism becomes food
What is the difference among a canyon, gorge, and valley? The easiest way to answer this is to describe each term, so you can see: 1) A canyon is a deep valley with steep si
Give the common name of the historic mineral that was the original source of radium and the first substance in which helium was discovered on earth: Pitchblende
Q. Do you know of any activity which may be polluting this water source? Answer: The discharge of waste water from homes, industries, hospitals, etc. into the river pollutes thi
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