ICSE Class 10 Geography
Question 29 of 32
Conventional Sources of Energy — Question 9
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Question Assertion (A): Hydel power is the cheapest form of renewable energy.
Reason (R): Once the project is operational it does not produce waste or green house gases.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R does not explain A.
- A is true but R is false.
- A is false but R is true.
Both A and R are true but R does not explain A.
Explanation — After the initial cost of building dams, which is quite high, they operate on low running costs and provide long-term benefits making them the most economical renewable energy source. So, Assertion (A) is true. Reason (R) talks about Hydel plants not producing waste or green house gases which is also true. However, Reason (R) does not explain Assertion (A).