Green Skills
Green Skills
This domain tests your understanding of sustainability and how work practices affect the environment. Expect questions on natural resources, pollution, waste management, energy and water conservation, renewable energy, green jobs and sustainable choices in the workplace.
Core rules and concepts
- Natural resources are renewable (sunlight, wind, water, biomass) or non-renewable (coal, petroleum, natural gas, minerals). Renewable does not mean zero impact: dams, panels and turbines have costs.
- Sustainability means meeting present needs without compromising future generations. It balances environmental, social and economic concerns.
- The waste hierarchy favours prevention, then reuse, recycling, recovery and safe disposal. Segregate biodegradable, non-biodegradable, recyclable and hazardous waste.
- Energy conservation means using less energy for the same task; efficiency means getting more output per unit of energy. Switching off unused lights, using LEDs, servicing equipment and using public transport are practical actions.
- Water conservation includes fixing leaks, rainwater harvesting, drip irrigation and closing taps.
- A carbon footprint is the total greenhouse gas emissions caused by a person, product or activity. Green jobs are jobs that contribute to environmental protection or sustainable use of resources.
Worked example
A school replaces ten 60 W bulbs with 10 W LEDs. Both sets run five hours a day. Old use: 10 × 60 W = 600 W; new use: 10 × 10 W = 100 W; saving = 500 W = 0.5 kW. Daily saving = 0.5 kW × 5 h = 2.5 kWh. At ₹5 per kWh, the school saves ₹12.50 a day, or ₹375 in 30 days. The reasoning shows that the saving comes from the power difference, not from the number of bulbs alone. Fixing a leaking tap would add a water saving.
Traps that cost marks
Do not call all renewable energy impact-free. Do not confuse recycling with reuse. Do not mix biodegradable and non-biodegradable waste. Do not treat green skills as only planting trees; they include energy, water, waste and green careers. Do not forget units such as kWh and watts.