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Foam extinguishers : If the burning liquid is in a container the jet should be directed at the inside edge of the vessel or at a vertical surface in order to break the jet and allow the foam to build up and spread across the surface of the liquid (Figure). If this is not possible, the correct procedure is to stand well back (perhaps as far as 6 or 7 m) and to direct the jet with a gentle sweeping movement to allow the foam to drop down and form a layer on the surface of the liquid (Figure). Do not aim the jet directly into the liquid as this will drive the foam under the surface where it will be ineffective in extinguishing the fire and may spread the fire by splashing the liquid on the surroundings.
Figure: Use of foam extinguisher-I. Fig.12.4: Use of foam extinguisher-11.
tissue experiment conclusion
Extra-terrestrial life: Just as we have been curious about how life originated on the Earth, we have also tried to explore whether there is life on any other planet in the Sol
Q.What is soil erosion? The blowing away or washing away of land surface by wind or water is known as soil erosion.
Vaccination: Now let us see how vaccination protects us from disease. We have mentioned above that the W.B.Cs. produce antibodies which neutralise the toxins produced by th
Mr. X is a 24-year-old Caucasian male. He denied suicidal and homicidal ideation, and was not actively psychotic. He was well-groomed, clean-shaven, and dressed casually in jeans a
why don''t we have a crtical point on the solid liquid equilibrium line as we have on the liquid-vapour line...
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Severe Bleeding In case of severe bleeding, use the following steps: (1) Control bleeding by the following means: (a) Apply direct pressure on the wound for 5-15 minute
When, in the geologic column, did dinosaurs become extinct at the Cretaceous-Tertiary boundary
Sterols- steroids containing an alcoholic group at C-3 position and a side chain of 8 to 10 carbon atoms at c-17
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