Renewable Energy means 1. Electricity produced from solar 2. Electricity produced from thermal plants 3. Electricity produced from coal 4. Electricity produced from wind Choose the correct answer from the options given below :
1 and 4 only
Only solar and wind are renewable, so the answer is 1 and 4 — option 1.
The definition. A renewable source is one replenished by natural processes on a human time scale, so that using it does not exhaust it. A non-renewable source exists in a fixed stock built up over geological time and is depleted by use.
| Item | Renewable ? | Why |
|---|---|---|
| 1. Solar | Yes | The Sun will shine for billions of years; the supply is not diminished by use |
| 2. Thermal plants | No | “Thermal” in Indian usage means a station burning coal, lignite, gas or oil — all fossil fuels |
| 3. Coal | No | A fossil fuel formed over hundreds of millions of years |
| 4. Wind | Yes | Driven by solar heating of the atmosphere, and continuously renewed |
Since items 2 and 3 are in fact the same thing — a thermal plant in India is usually a coal plant — any option containing either must be wrong, and that disposes of options 2, 3 and 4 together.
The full list of renewables : solar, wind, hydro, biomass, geothermal, tidal and wave energy. Nuclear is not renewable — uranium is a finite mineral — though it is low-carbon, and the two properties are often confused.
India’s position. India has committed itself to 500 GW of non-fossil capacity by 2030 and to net zero by 2070, targets announced at the Glasgow COP26 as the Panchamrit pledges. Installed renewable capacity has passed 200 GW, with solar the largest component; the National Solar Mission, the International Solar Alliance co-founded with France, and the world’s largest solar parks at Bhadla in Rajasthan and Pavagada in Karnataka belong to the same effort.
A caution on hydro. Large hydropower is renewable but is often counted separately from “renewable energy sources” in Indian statistics, which reserve that phrase for small hydro, solar, wind, biomass and waste-to-energy. It is worth checking which convention a question is using.
Hence, the answer is 1 and 4 only.
Important Questions from Conservation efforts: India and World
Consider the following statements:
1. 'Right to the City' is an agreed human right and the UN-Habitat monitors the commitments made by each country in this regard.
2. 'Right to the City' gives every occupant of the city the right to reclaim public spaces and public participation in the city.
3. 'Right to the City' means that the State cannot deny any public service or facility to the unauthorized colonies in the city.
Which of the statements given above is/are correct?
The ‘Common Carbon Metric’, supported by UNEP, has been developed for
With reference to the New York Declaration on Forests, which of the following statements are correct?
1. It was first endorsed at the United Nations Climate Summit in 2014.
2. It endorses a global timeline to end the loss of forests.
3. It is a legally binding international declaration.
4. It is endorsed by governments, big companies and indigenous communities.
5. India was one of the signatories at its inception.
Select the correct answer using the code given below.
What is the name of an international environmental agreement with universal ratification to protect the earth’s ozone layer by eliminating the use of ozone-depleting substances (ODS)?
National park is one kind of
