Chemical Effects of Electric Current

8 solved questions from Class 8 Science, each with the full working. Tap any question to see the step-by-step solution.

• 1 What is the fundamental scientific concept introduced in the chapter 'Chemical Effects of Electric Current'? medium MCQ Key Concept & Definition
• 2 Which of the following is an important application or observation related to 'Chemical Effects of Electric Current'? easy MCQ Practical Application
• 3 What primary question does the chapter 'Chemical Effects of Electric Current' aim to answer? medium MCQ Core Scientific Inquiry
• 4 Why is the study of 'Chemical Effects of Electric Current' essential for students in class-8? hard MCQ Importance & Significance
• 5 Which key practice is recommended while studying topics in 'Chemical Effects of Electric Current'? medium MCQ Scientific Method
• 6 What is the primary topic or theoretical principle explored in 'Chemical Effects of Electric Current' (Class 8 SCIENCE)? medium MCQ Chapter Core Principle
• 7 Which key mechanism or analytical rule is highlighted in 'Chemical Effects of Electric Current'? medium MCQ Key Analytical Mechanism
• 8 During the electrolysis of a 0.2 M FeSO₄ solution, a current of 12 A flows for 1 hour. Find the mass of iron deposited at the cathode. (Use Faraday constant 96485 C, molar mass of Fe = 55.85 g mol⁻¹.) medium 2 marks Mass deposition in electrolysis