Alternative Energy
Alternative Energy is a Science & Technology concept from the MPSC syllabus, tested in 3 past MPSC questions (2019, 2020). Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
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खालीलपैकी कोणती विधाने बरोबर आहेत? / Which of the following statements are correct?
(a)पारंपरिक कार इंजन जैवइंधनावर चालू शकतात. / Conventional car engines can be run on Bio-fuel.
(b)गॅसोलीन कार नामशेष होतील. / Gasoline cars are disappearing.
(c)जैवइंधनामुळे प्रदूषण कमी होऊ शकते. / Pollution minimize due to Bio-fuels.
(d)जैवइंधनामुळे वाहनांचे इंजन बदलण्याचे कारण नाही. / No change of vehicle engines due to Bio-fuel.
Conventional car engines can handle low-level bio-fuel blends without modification, helping reduce pollution, and eliminating the immediate need to change standard vehicle engines. Gasoline cars are not vanishing overnight, making statement (b) incorrect.
खालीलपैकी कोणते इंधन मोटारीत वापरल्यामुळे फोर्ड आणि डिझेल यांचे स्वप्न हवेत विरून गेले? / Use of which of the following source of energy in motor cars shattered dream of Ford and Diesel?
Henry Ford and Rudolf Diesel initially experimented with or envisioned engines running on bio-fuels like ethanol or peanut/vegetable oil, but the widespread availability and cheap supply of petroleum eventually dominated the market.
पुढील विधानांचे परीक्षण करा. अ. ऊर्जेच्या विविध स्वरूपांच्या निर्मितीसाठी मोठ्या प्रमाणात जिवाश्म इंधनाची गरज असते. ब. अणु विखंडन वा विलिनीकरण प्रक्रिया मोठ्या प्रमाणात ऊर्जेचे उत्पादन करते. क. जैव इंधनाचा वापर करत नसल्याने अणुऊर्जा मोठ्या प्रमाणात प्रदूषण कमी करते. ड. काटेकोरपणे व्यवस्थापन करून अणु कचऱ्याची समस्या सुटू शकते. पुढील पर्यायांमधून वरील विधानांवर आधारलेले सर्वात उचित अनुमान निवडा.
(a)Production of various forms of energy requires bio-fossil fuels in large quantities.
(b)Atomic fission or fusion processes produce large amount of energy.
(c)Atomic energy reduces pollution remarkably as it doesn't use bio-fossil fuels.
(d)Problem of atomic waste can be managed tactfully.
Nuclear energy is a great alternative because it avoids fossil fuels and reduces pollution, provided that atomic waste is managed strictly and tactfully.