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Explosives : These include the commercial explosives, preparations and substances used as blasting agents, ammunition, fireworks etc. Some examples are, gun powder, chlorate mixtures, nitrate mixtures, nitro compounds, fulminates, ammunitions, fire works, detonators, gels, etc.
Checking Breathing and Pulse : Before attempting to resuscitate a casualty, it is essential that you check his/her breathing rate and pulse. You can cause problems if you attempt
Another balloon experiment Stretch a rubber balloon over the neck of a little bottle. Place it in the receiver jar and delete some of the air with the pump. What happens? How d
The Fire Triangle Generally, a fire needs three things to burn: Fuel - something to bum, e.g.oi1. Oxygen - to maintain combustion. Ignition - something to start
1. A square in the 2d plane has the x and y co-ordinates of (0, 0), (1, 0), (0, 1) and (1, 1). Apply a scaling of 0.5 units in the x direction, followed by a translation of three
Adulteration of food: We live in a society where some times foods and even medicines are sold in an adulterated form by mixing it with other materials, which are neither food
What is an old wives'' tale
motion is a change in what
Method of science: We have seen above that science is an enaeavour to understand nature and to mould it to satisfy human needs. In earlier units we have seen that, in this pr
Lasers : Laser light is an extremely intense form of electromagentic radiation and its name is acronym for light amplification by stimulated emission of radiation. Lasers are us
Explain the Menopause The cessation of menstruation is menopause. Natural menopause typically occurs between 45 and 55 years of age. It is caused by changes in concentration of
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