Question : Assertion: Commercial energy sources, such as coal and natural gas, are extensively used for electricity generation and industrial purposes.
Reason: Commercial energy sources are readily available and have high energy density.
Option 1: Both assertion and reason are correct, and the reason is the correct explanation of the assertion.
Option 2: Both assertion and reason are correct, but the reason is not the correct explanation of the assertion.
Option 3: Assertion is correct, but the reason is incorrect.
Option 4: Assertion is incorrect, but the reason is correct.
Correct Answer: Both assertion and reason are correct, and the reason is the correct explanation of the assertion.
Solution : The correct answer is (a) Both assertion and reason are correct, and the reason is the correct explanation of the assertion.
The assertion states that commercial energy sources, such as coal and natural gas, are extensively used for electricity generation and industrial purposes, which is correct. Coal and natural gas are widely utilized as commercial energy sources globally. They are used for electricity generation in power plants and as fuels for industrial processes in various sectors like manufacturing, transportation, and heating.
The reason provided states that commercial energy sources are readily available and have high energy density, and this is the correct explanation of the assertion. Coal and natural gas are considered commercial energy sources because they are easily accessible and have high energy density. They are abundant in many regions, making them readily available for consumption. Additionally, coal and natural gas contain high levels of energy per unit of mass, which makes them efficient sources of energy for electricity generation and industrial applications.
Therefore, both the assertion and reason are correct, and the reason serves as the correct explanation for why commercial energy sources like coal and natural gas are extensively used for electricity generation and industrial purposes.
Question : Non-commercial energy sources are often used for:
Option 1: Industrial production
Option 2: Transportation
Option 3: Cooking and heating
Option 4: Electricity generation
Question : Statement 1: Hydropower is a renewable source of energy that harnesses the energy of flowing or falling water to generate electricity.
Statement 2: Dams and turbines are used to convert the potential and kinetic energy of water into electrical energy.
Option 1: Both statements are true.
Option 2: Statement 1 is true, and Statement 2 is false.
Option 3: Statement 1 is false, and Statement 2 is true.
Option 4: Both statements are false.
Question : The term "grid parity" refers to:
Option 1: Equal distribution of energy resources
Option 2: The cost of renewable energy matching conventional energy
Option 3: A power outage in the electricity grid
Option 4: An efficient energy transmission system
Question : Statement 1: Wind power is a clean and renewable source of energy that harnesses the power of wind to generate electricity.
Statement 2: Wind turbines convert the kinetic energy of the wind into electrical energy.
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