Question:
How are minerals formed in igneous and metamorphic rocks?
Answer:
In igneous and metamorphic rocks, minerals may occur in the cracks, crevices, faults or joints. The smaller occurrences are called veins and the larger are called lodes. In most cases, they are formed when minerals in liquid, molten and gaseous forms are forced upward through cavities towards the earth's surface. They cool and solidify as they rise. Major metallic minerals like tin, copper, zinc and lead etc. are obtained from veins and lodes.
Minerals and Energy Resources
Q 2.
Distinguish between Natural Gas and BioGas
Q 3.
Name six non-commercial sources of energy.
Q 4.
Distinguish Between Commercial and Non-Commercial Energy
Q 5.
Describe the impact of globalisation on Indian agriculture.
Q 6.
Give three examples of metallic and three examples of non-metallic minerals.
Q 7.
Name three states which are known for the production of mica.
Q 8.
What are conventional sources of energy?
Q 9.
List four non-conventional energy resources.
Q 10.
Write a brief note on conventional and non-conventional sources of energy.
Q 11.
Name four bauxite-producing states.
Q 12.
Name four important iron ore-producing states of India.
Q 13.
Distinguish between Anthracite and Bituminous Coal
Q 14.
Mention three areas where petroleum is found in India.
Q 15.
Distinguish between the following
(a) Ferrous and non-ferrous minerals
(b) Conventional and non-conventional sources of energy.
Q 16.
Name three most important coal producing states of India.
Q 17.
Name four manganese ore-producing states of India.
Q 18.
Why do you think that solar energy has a bright future in India?
Q 19.
How are minerals formed in igneous and metamorphic rocks?
Q 20.
Describe the distribution of iron ore in India.
Q 21.
Name two non- metallic minerals.
Q 22.
Why do you think that solar energy has a bright future in India?
Q 24.
Distinguish Between Commercial and Non-Commercial Energy
Q 25.
Describe the distribution of coal in India.
Q 26.
Suggest two ways of conserving minerals.
Q 27.
How do we need to conserve mineral resources?
Q 28.
Distinguish Between Metallic and Non-metallic minerals
Q 29.
What is commercial and non-commercial energy
Q 30.
What are commercial sources of energy?
Q 31.
Describe the distribution of coal in India.
