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

In which question should we first check whether the system is open or closed?

Answer and explanation

Correct answer: An experiment involving conservation of mass

The open or closed nature of a system is especially important in an experiment testing conservation of mass. In a closed system, no material can enter or leave, so the measured total mass before and after a reaction can be compared fairly. In an open system, gases may escape or enter from the surroundings, causing the measured mass to change even though mass is conserved overall. Therefore, option A is correct. Percentage composition and formula comparison primarily require composition or mass-ratio calculations, while Gay-Lussac’s law focuses on gas volumes at the same temperature and pressure. Those topics may involve experimental precautions, but the open-versus-closed distinction is central to a mass-conservation measurement.

Related tags

ChemistryConservation Of MassOpen And Closed SystemsLaws Of Chemical CombinationSome Basic Concepts Of ChemistryClass 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.