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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.
Explain the Insulin Insulin is a hormone synthesized from the precursor called preproinsulin. Preproinsulin has four peptides. Insulin circulates in the blood in a free state.
INTRODUCTION : This exercise is based on here 'Laws and Regulations' of this course. What are we going to do in this exercise? - This might be the question arising in your mind. I
Explain the Inulin Clearance Test Inulin is a complex polysaccharide found in specific plant roots. In the test, a fixed amount of inulin is infused into the blood at a constan
A model illustrating how an eclipse appears The sun is shown by an opal electric bulb shining by a circular hole 5 cm in diameter in a piece of blackened cardboard. The corona
Uranus Uranus (Fig.) appears as a green disc with vague markings, even through the largest telescopes. Its colour is produced by the large amounts of methane and ammonia clo
#2 DESCRIBE THE APPEARANCE OF THE STOMATE AND THE GUARD CELLS.
Haloenzyme :- A whole enzyme, as a complete and functional molecule. Generally, a holoenzyme consists of a polypeptide portion (an apoenzyrne) and at least one cofactor or
saan nakuha ang salitang tubig?
Ethical issues concerning use of animals for experimentation and educational purposes (i) Animals procured, handled and looked after according to the regulatory principles laid
what is the amplitude of a radio wave?
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