Which of the following is not the way of saving energy at home?
Keeping gas off when not in use.
Cooking food in an open pan on low flame.
Not switching on lights during daytime.
Petroleum is referred to as 'Black Gold' because
It has immense value.
It is black in colour.
It is yellow in colour.
Where is mineral fuel found?
Sedimentary rocks
Metamorphic rocks
Both
The process of taking out minerals from rocks buried under the surface of the earth is termed as __________.
Mining
Drilling
Extracting
What is the process in which minerals lying near the surface are dug simply, called?
Drilling
Off-shore drilling
Quarrying
Suggest ways to conserve minerals
Reducing waste in the process of mining
Recycling of minerals
Both
Why has quarrying become a major environmental concern?
Because minerals are pollutants
Due to dust raised from the quarrying activities
None of these
From which mineral is silicon obtained?
Coal
Thorium
Quartz
Where do we find natural gas resources in India?
U.P.
Bihar
Mumbai
Which continent is the largest producer of iron?
Asia
Europe
North America
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