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

If the secondary atmosphere formed but gravity remained weak what contradiction appears in atmospheric evolution?

Answer and explanation

Correct answer: Gas retention would be difficult despite gas source

The governing concept is that atmospheric evolution depends on both gas supply and gravitational retention. Volcanic outgassing and related processes can add gases to a developing atmosphere, but a planet also needs sufficient gravity to hold those gases against thermal escape and the effects of solar radiation or solar wind. If a secondary atmosphere formed while gravity remained weak, the apparent contradiction would be that gases had a source but could not be retained efficiently for long. Thus option A is correct. Option B concerns core composition, option C reverses an unsupported sequence, and option D confuses photosynthesis with the production of solar wind; none addresses the source-versus-retention problem.

Related tags

GravityOutgassingAtmosphere RetentionEvolution 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.