Which of the following is a commercial source of energy?
A. Agricultural waste
B. Dried dung
C. Sun
D. Natural gas
Answer: Option D
A. Agricultural waste
B. Dried dung
C. Sun
D. Natural gas
Answer: Option D
Which central government agency is responsible for the mapping and exploration of minerals?
A. The Geological Survey of India
B. Surveyor General of India
C. National Mineral Development Corporation Ltd
D. Indian Bureau of Mines
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