Muft Shiksha
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
Class 10ScienceChemical Substances – Nature and BehaviourChemical Reactions and EquationsEasyLevel 7

When an iron nail is placed in copper sulphate solution, the colour of the solution changes from blue to which colour?

Advertisement

Answer and explanation

Correct answer: Green

Iron is more reactive than copper, so it displaces copper from copper sulphate. The reaction is \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). The ferrous sulphate formed gives the solution a green colour. The reddish-brown colour belongs to copper deposited on the nail, not to the solution.

Tags

scienceclass 10chemical reactionsdisplacement reactioncopper sulphateiron sulphate

Frequently asked questions

What is the correct answer to this question?

Green

Why is this the correct answer?

Iron is more reactive than copper, so it displaces copper from copper sulphate. The reaction is \(\mathrm{Fe + CuSO_4 \rightarrow FeSO_4 + Cu}\). The ferrous sulphate formed gives the solution a green colour. The reddish-brown colour belongs to copper deposited on the nail, not to the solution.

Which subject and chapter does this question cover?

This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.

Report question
Advertisement