Class 7 Science Notes App | Electrical Circuits and Electric Currents Notes e-Book PDF | 4
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Class 7 Science Exam MCQs – Practice Test 4 (Chapter 6)

Electrical Circuits and Electric Currents Notes Questions with Answers PDF Download – Test 4

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Study Electrical circuits and electric currents Notes Questions and Answers PDF for STEM middle school education. Download the Electrical Circuits and Electric Currents Quiz Answers PDF e-Book, Ch. 6-4 to study Class 7 Science Course. Practice Electrolysis MCQ PDF, Electrical Circuits and Electric Currents Quiz Questions and Answers for STEM middle school education. Free Electrical Circuits and Electric Currents Notes App: Class 7 Science Notes App Download to electrolysis, electrolytes, magnetic effect and electric current, simple circuits, electricity billing test prep for science virtual discovery learning.

The "Electrical Circuits and Electric Currents Notes" App Download: Electrolyte used in the purification of copper is; MCQ with answers: copper chloride, copper nitrate, copper sulphate, and copper carbonate. Practice Electrolysis MCQ Questions, download Kobo e-Book (Free Chapter) to join remote courses.

Electrical Circuits and Electric Currents MCQs – Practice Test 4 PDF Download

MCQ 16: Electrolysis is also used to purify:

  1. sodium
  2. copper
  3. silver
  4. potassium

MCQ 17: The electrolyte used in the purification of copper is:

  1. copper nitrate
  2. copper chloride
  3. copper sulphate
  4. copper carbonate

MCQ 18: The strength of electromagnet can be increased by introducing a soft iron core:

  1. outside the coil
  2. inside the coil
  3. round the coil
  4. above the coil

MCQ 19: For current to flow, the circuit should be:

  1. parallel
  2. in series
  3. complete
  4. hot

MCQ 20: Electric companies charge for:

  1. energy
  2. power
  3. resistance
  4. units

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