Solar energy
Solar energy is a Environment concept from the MPSC syllabus, tested in 4 past MPSC questions (2013, 2020, 2025). Below are those real questions with their correct answers and explanations.
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ऊर्जा संकट अधिकाधिक तीव्र होत चालले आहे. आपण कशावर भिस्त टाकावयास हवी ? The problem of energy is becoming increasingly acute. What should we resort to ?
(a)नैसर्गिक वायूवर कारण तो सुलभतेने वापरता येतो. / Natural gas as it can be conveniently used.
(b)नव्याने बनविता येणाऱ्या स्रोतांकडे लक्ष द्यावयास हवे. / We must pay more attention to renewable sources of energy.
(c)आपण सौर ऊर्जेवर भर द्यावयास हवा. / We should lay stress on solar energy.
(d)आपण नवे स्रोत शोधून काढले पाहिजेत. / We should find new sources of energy.
To combat the acute energy crisis, sustainable strategies require shifting focus towards renewable sources of energy (b) and specifically laying stress on solar energy (c).
ऊर्जा उत्पादनासाठी खालीलपैकी कोणता/ते पर्याय कोणत्याही स्वरूपात कार्बनचा वापर करीत नाहीत ?
(a)लाकुड
(b)बायोगॅस
(c)भूऔष्णिक स्रोत
(d)कोळसा
Geothermal energy (भूऔष्णिक स्रोत) is harnessed from the earth's internal heat and does not involve the combustion of carbon or release of greenhouse gases, unlike wood, biogas (which contains methane), and coal.
जैवइंधन वापराचे खालीलपैकी कोणते फायदे बरोबर आहेत ? / Which of the following benefits of use of Bio-fuel are correct ?
(a)जैवइंधन वनस्पतीपासुन तयार करता येते. / Bio-fuel is made from vegetations.
(b)जैवइंधनामुळे प्रदूषण कमी होईल. / Less pollution by use of bio-fuel.
(c)जैवइंधनामुळे खनिजतेल वाचविता येते. / Use of bio-fuel will save crude oil.
(d)जैवइंधन सस्त आहे. / Bio-fuel is cheap.
Bio-fuels are derived from plant matter (vegetation), help reduce pollution compared to fossil fuels, save depleting crude oil reserves, and are generally cost-effective or economically viable over time. Hence, all given benefits are correct.
खालीलपैकी कोणते एक पुनर्विकरणीय ऊर्जा संसाधनाचा उदाहरण आहे ? / Which of the following is an example of a renewable energy resource ?
Geothermal energy is derived from the Earth's natural internal heat, making it a clean and renewable energy source, unlike coal, petroleum, and natural gas which are fossil fuels.