Question

Consider the following statements about Bio-energy:
S1: When magma comes out on the earth’s surface, tremendous heat is released which can be successfully tapped and converted into bio-energy.
S2: Bio-energy is also derived from agricultural residue, municipal, industrial and other waste and garbage.

• A. Both are correct
• B. Both are incorrect
• C. S1 is correct and S2 is not correct
• D. S2 is correct and S1 is not correct

Hint:

Always distinguish between renewable energy types: \textbf{bio-energy} comes from biological waste, while \textbf{geothermal energy} comes from heat inside the earth.

Answer 1

The Correct Option is D

Step 1: Analyse Statement S1.
Statement S1 talks about the heat released when magma comes out on the earth’s surface.
Such heat energy is related to geothermal energy, not bio-energy.
Bio-energy is produced from biological sources such as plants, animal waste, and organic matter.
Therefore, converting magma heat into bio-energy is scientifically incorrect.
Hence, Statement S1 is incorrect.
Step 2: Analyse Statement S2.
Statement S2 says that bio-energy is derived from agricultural residue, municipal waste, industrial waste, and garbage.
This is correct because bio-energy is obtained from biodegradable organic matter.
Examples include crop residues, animal dung, sewage waste, and organic municipal waste.
These materials are commonly used to produce biogas, biofuels, and biomass energy.
Hence, Statement S2 is correct.
Step 3: Compare both statements.
Statement S1 is incorrect because it confuses geothermal energy with bio-energy.
Statement S2 is correct as it correctly defines sources of bio-energy.
Step 4: Final conclusion.
Therefore, the correct option is (D) S2 is correct and S1 is not correct.