Discuss the potential of natural hydrogen as a fuel to meet growing global energy demands? Why is it still an untapped industry? (Answer in 250 words)

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6. (a) भारतीयस्थापत्यकलायाः प्रमुखभेदान् प्रदर्श्य कस्याप्येकस्य प्रभेदस्य वैशिष्ट्यं सोदाहरणं 250 शब्देषु प्रतिपाद्यताम्। 20 Showing main types of Indian architectural art, explain with apt illustrations the peculiarities of any one of them in about 250 words. (b) जैनाभिमतस्य स्याद्वादसिद्धान्तस्य स्वरूपं प्रदर्श्य दर्शनक्षेत्रे तस्योपयोगित्वं 250 शब्दैश्चैव निर्णेयम्। 15 Explaining the nature of Syādvāda as propounded by the Jainas, examine its utility in the field of philosophy within 250 words. (c) प्राचीनभारते आयुर्वेदस्य विकासमधिकृत्य 250 शब्देषु स्वकीयान् विचारान् प्रकटयत। 15 Give your opinion within 250 words on the development of Ayurveda in ancient India.