Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

What conclusion follows from studying methane, ammonia, and low free oxygen together in the early atmosphere?

Answer and explanation

Correct answer: The atmosphere was chemically very different from today

The governing concept is atmospheric evolution. Methane and ammonia, together with very little free oxygen, indicate that the early atmosphere did not have the same chemical composition as the present atmosphere. Free oxygen became abundant much later, especially after photosynthetic organisms released oxygen and it accumulated over geological time. Therefore, option A is correct: the early atmosphere was chemically very different from today. Option B is incorrect because ozone is a minor high-atmosphere constituent formed from oxygen, not the whole atmosphere. Option C is unrelated to atmospheric gases, and option D directly contradicts the evidence of low free oxygen. The gas combination is therefore a clue to an oxygen-poor primitive atmosphere.

Related tags

MethaneAmmoniaEarly AtmosphereOxygenEvolution Of The EarthThe Origin And Evolution Of The EarthGeographyClass 11 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.