General Science- Vayumandal Ki Kis Parat Me 90 Pratishat ozone Payi Jati Hai ?

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Q.11524: वायुमण्डल की किस परत में 90 प्रतिशत ओजोन पायी जाती है ?
A.
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D.
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वायुमण्डल की किस परत में 90 प्रतिशत ओजोन पायी जाती है ? General Science in hindi,  samtapmandal question answers in hindi pdf  Ion Mandal questions in hindi, Know About kshobhmandal General Science online test General Science notes in hindi quiz book    madhyamandal

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