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Grade 7 Examination Portion coverage 3rd Term exam 21-22 and Answer Key

Grade 7 Chapter 7 Electrolysis  Class Assessment 1.       Loss of electron by an atom is called ………….? Oxidation                      b.  Reduction         c. Redox  reaction 2. In ………… state of electrolytes, ions are not free to move? Liquid                            b. Solid                  c. Gas 3. Compounds that do not conduct electricity even in molten or solution form are called ……………….. ? a. Electrolytes   b. Metal Electrode    c. non-Electrolytes     4.   Lead, Pb 2+ , gains -------- electrons forming lead atoms.     a)    2      ...