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Fire Buckets : All labs should be equipped with a fire bucket. The buckets are not used only for carrying water to a fire. This is one of their uses. The other way a fire bucket is used is by keeping it filled with sand and a scoop. You will find that sand can extinguish fire quickly and effectively. It is particularly useful for dealing with liquid spillage or with reactive chemicals such as alkali metals. Other advantages of sand are that it is easy to use and it is easy to clear up. If you use sand as an extinguisher or absorber, use it liberally. Speed is important when controlling fire or dangerous spillage, but you must be careful not to throw a large quantity of sand onto the hazard in your haste. This could cause splashing which would make the hazard worse. Of course, sprinkling too little sand onto the hazard is equally useless. Quick, liberal pouring is the best method and you should aim to cover the whole area of the flames or spillage, working from the outer edge inwards. Sand buckets should be three-quarters full, and covered with a loose cardboard disc with a hole in the centre. This sand should not be used for sand baths.
Determine the Agronomic factors of fertilizers These factors are key to efficient use of fertilizers for crop production and include fertilizer responsiveness of crops, spacing
Specific Acquired Immunity Body in the long run develops specific immune mechanisms for each species. These mechanisms are not innate but are acquired after exposure to the spe
Kepler's Laws of Planetary Motion: Further support to the heliocentric model came from the work of Johannes Kepler at around the same time as Galileo's observations. Kepler, a
Personal Protective Devices : We shall now discuss the details of protective devices required for safety in a laboratory. The aim of protective devices is to minimise the risk of
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
Enzyme inactivation The disappearance of activity of an enzyme (in vivo or in vitro due to presence of inhibitor molecules or inhibitory condition(changes in pH, temperature,
What is Soil Aeration Whatever may be the structure of aggregate, it introduces pores in the soils. These pores are filled by air and/or water and have a role in the plant grow
saan nakuha ang salitang tubig?
On the day of the summer solstice in the Southern Hemisphere, the sun can be seen overhead at what location around the globe? At Tropic Of Capricorn
Explain the property of Water Water has a significant property called surface tension that markedly influences its behaviour in soils and may be measured by level of water rise
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