Available Answers

1. 1.

   Choose and write the correct answer(MCQs):

   1. Which of the following is an electrolyte:
      1. kerosene 
      2. pure water
      3. sugar solution 
      4. salt solution
   2. The apparatus used for the electrolysis is:
      1. galvanometer 
      2. volt meter
      3. volt meter
      4. ammeter
   3. Pure water is a:
      1. good conduct
      2. poor conductor 
      3. insulator 
      4. none of these
   4. Electric current is the flow of participles with:
      1. negative charge
      2. positive charge
      3. both negative and position charge
      4. none of these
   5. The liquid, which conducts electricity and undergoes decomposition is called:
      1. electrolyte
      2. electrode
      3. electrolysis
      4. electromagnet
2. 2.

   Write T for true or F for false:

   1. Electric current flows from positive to negative.
   2. The battery is used as a driving force in the electric circuit.
   3. Metals are conductors of electricity.
   4. Insulators are used to make electric wires.
   5. Mercury used in thermometer is a bad conductor of electricity.
   6. Chromium is used in chromium plating.
   7. Zinc metal is plated over the iron sheet.
3. 3.

   How galvanization is useful to protect iron from rusting?
4. 4.

   Describe the underlying principle used in chrome plating of objects.
5. 5.

   Describe electroplating with an example.

6. 6.

   Explain the electrolysis.