Electrical Circuits and Electric Currents Multiple Choice Questions 4 PDF Download

Learn electrical circuits and electric currents MCQs, grade 7 online science test 4, electrolysis multiple choice questions and answers. Electrolysis revision test has science worksheets, helping answer key with choices as copper, sodium, silver and potassium of multiple choice questions (MCQ) with electrolysis quiz as electrolysis is also used to purify for competitive exam prep, viva interview questions. Free science study guide to practice electrolysis quiz to attempt multiple choice questions based test.

MCQs on Electrical Circuits and Electric Currents Quiz PDF Download Worksheets 4

MCQ. Electrolysis is also used to purify

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


MCQ. The electrolyte used in the purification of copper is

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


MCQ. 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. For current to flow, the circuit should be

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


MCQ. Electric companies charge for

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