alleryWhich statement about wind energy is INCORRECT?
AWind energy is a renewable source of energy
BProduction of wind energy is pollution-free
CThe blades of a windmill are turned by an electric motor
DUsing wind energy can reduce fossil fuel consumption
Answer & Solution
Correct answer: C. The blades of a windmill are turned by an electric motor
1. In a windmill, blowing air strikes the blades and makes them rotate, driving a generator.
2. So the blades are turned by the wind, not by an electric motor; option C reverses this and is therefore the false statement.
3. Wind energy being renewable, pollution-free and fossil-fuel-saving are all correct, so A, B and D are true.
4. Hence the incorrect statement, and the answer, is C.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Environmental Management", p.327_
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