Why are petroleum and its derivatives called 'black gold'?
Petroleum and its derivatives are called Black Gold as they are very valuable.
Tips: -
V. Imp.
Name two regions rich in natural gas resources.
Which sources of energy would you suggest for
(a) rural areas (b) coastal areas (c) Arid regions
Give five ways in which you can save energy at home.
Which one of the following is Not a characteristic of minerals?
Which one of the following is Not a producer of mica?
Which one of the following is a leading producer of copper in the world?
Which one of the following practices will Not conserve LPG in your kitchen.
Give reasons.
Environmental aspects must be carefully looked into before building huge dams.
Give reasons.
Most industries are concentrated around coal mines.
Give reasons.
Petroleum is referred to as 'black gold'.
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