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Your Von Hotpoint gas cooker is producing a luminous flame (yellow flame) because there is no enough oxygen for complete combustion. Make sure that your Bunsen burner is clean and the small oven air holes under the plate are not closed. Almost all Gas cookers Ariston, LG, Armco, Bruhm, Mika, etc produce the yellow flame when combustion is not complete. Also ensure that you do not have a lit Jiko in the same place as the Gas Cooker or there is enough air circulation in the room.
It is advisable to melt ice directly using an electric heating coil because;Melting water is a poor conductor of heat so local heating could rise the temperature slightly.
Reasons growing flowers in greenhouses preferred in Kenya include;There is controlled spread of pests and diseases.It's easy to control the amount of moisture required.Cultivation can be done throughout the year.It is easy to control weeds in the greenhouse.The plants are protected from extreme weather conditions e.g excessive rainfall, strong winds, drought and hailstones.
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Aluminium is used for making electric cables while magnesium is not because;Aluminium has 3 delocalised electrons making it a better conductor than magnesium with only 2 delocalized electrons.Aluminium is resistant to corrosionAluminium has less cost than magnesium