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United Nations has recently taken up an exciting new programme named "earth watch". It will provide monitoring, research, evaluation, control and exchange of information about the world environment. Inspite of many laws biodiversity is not conserved and wild life is suffering loss. The in..

Lamp black is manufactured when tar and vegetable oils (rich in carbon) are burnt in an insufficient supply of air and the resulting soot is deposited on wet blankets hung in a room. Lamp black is a velvety black powder. It is used in the manufacture of Indian ink, pr..

Mainly distributed in Maharastra, Madhya Pradesh, parts of Gujarat, Andhra, Tamil Nadu and Karnataka. They are the products of weathering of deccan trap. They can be deep black soils, clay loam soils, sandy clay soi..

5 boys share 15 watches. How many watches did each child get? => 5 ÷ 15 = 3 or 15 × 5 = 75 or 15 - 5 = 3 or 15 ÷ 5 = 3..

Words that are used before a noun to give the precise meaning of the noun are called determiners. These are short, common word..

Matt bought 5 watches. He gave 2 watches to Ed. How many watches are left with Matt? => 1 or 2 or 3 or 4..

Out of 9 watches packed in a box, 3 are faulty. If a consumer buys a watch, then what is the probability that he will get a faulty watch? => 2 3 or 2 9 or 1 9 or 1 3..

Amorphous Carbon - Lamp Black - Lamp Black is also known as Soot. Soot is obtained by the incomplete combustion of carbonaceous, fuels, especially oil fuels, in limited supply of air. The soot settles on the cooler parts of the chamber, and can be collected by scrapping it (Fig...

Lamp Black is also known as Soot. Soot is obtained by the incomplete combustion of carbonaceous, fuels, especially oil fuels, in limited supply of air. The soot settles on the cooler parts of the chamber, and can be collected by scrapping it. It is used in the manufacture of printin..

Heat and Thermodynamics..