Class 7 Science MCQs - Chapter 6
Electrical Circuits and Electric Currents Trivia Questions & Answers PDF Download - 4
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The Electrical circuits and electric currents Trivia Questions and Answers PDF (electrical circuits and electric currents Quiz Answers PDF e-Book) download Ch. 6-4 to study Grade 7 Science Course. Practice Electrolysis MCQ PDF, Electrical Circuits and Electric Currents Quiz Questions and Answers to study online courses. The Electrical Circuits and Electric Currents Trivia App Download: Free certification app for electrolysis, electrolytes, magnetic effect and electric current, simple circuits, electricity billing test prep for free online classes.
The Trivia MCQ: Electrolysis is also used to purify; "Electrical Circuits and Electric Currents" App APK Download with answers: Copper; Sodium; Silver; Potassium; to study online courses. Practice Electrolysis MCQ Questions, download Kindle eBook (Free Sample) for online school classes.
Electrical Circuits and Electric Currents Test Questions and Answers PDF Download: MCQ 4
Electrolysis is also used to purify
- sodium
- copper
- silver
- potassium
The electrolyte used in the purification of copper is
- copper nitrate
- copper chloride
- copper sulphate
- copper carbonate
The strength of electromagnet can be increased by introducing a soft iron core
- outside the coil
- inside the coil
- round the coil
- above the coil
For current to flow, the circuit should be
- parallel
- in series
- complete
- hot
Electric companies charge for
- energy
- power
- resistance
- units
Class 7 Science Mock Tests
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