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Water extinguishers : Direct the jet at the base of the flame and keep it moving across the fire.
Attack a fire which is spreading vertically at its lowest point and follow the fire upwards. Concentrate the jet on any hot spots once the main fire is extinguished.
To study a hailstone When it hails, collect some of the hailstones. Cut them in half and view how the ice of the hailstone has been built up in layers. If you live in a region
Tuning in on the Stars: The fact that stars emit radiowaves was discovered accidentally in 1932 by a young engineer Karl Jansky. He was trying to find the source of noise
Corrosive Substances : These substances cause severe damage by chemical action when in contact with living tissue or in case of leakage, destroy /damage other materials. Mineral a
facts
Weighing moisture again The similar experiment can be done with a bath towel. Wet the towel and wring it out. Hang it on a coat hanger. Hang the coat hanger on single end of a
Explain Transport of Oxygen by Red Blood Cells Oxygen combines with haemoglobin, i.e., the red pigment in red blood cells. It combines with oxygen in the lungs, transports it a
Q. List the methods of oil extraction? The methods of oil extraction are: (i) traditional method (ghani); (ii) improved methods, such as hydraulic pressing, screw pressing, pre
Niacin (vitamin B3) Though niacin or nicotinic acid has been known to the organic chemists since 1867 and Funk isolated it from yeast and rice polishing in order to identif
1.) Imagine that you are a particle inside an ice cube. You were placed into a glass of lemonade to cool it down. The lemonade has now been drunk and you have been left in the glas
Dissecting simple flowers Label each of five cards or pieces of White paper with one of the following words: stamens, pistil, petals,sepals, receptacle . Dissect a flower ca
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