Available Answers

1. 1.

   Look at the following circuit diagram and the objects given. Which object(s) will make the bulb glow in the circuit? What are these objects called?

   

   1. Eraser
   2. Copper wire
   3. Pure (distilled water)
   4. Aluminum foil
2. 2.

   Tick (√) the correct option.

   1. Electrolysis is a process in which
      1. electric current is passed through a solid
      2. electric current is passed through distilled water
      3. electric current is passed through the water with a few drops of dilute sulphuric acid
      4. electric current is passed through gas
   2. Which of the following is not a conductor?
      1. Salt water
      2. Tap water
      3. Pure water
      4. Lime juice
   3. Which of the following is good conductor of electricity?
      1. Wood
      2. Glass
      3. Plastic
      4. Sodium chloride solution
   4. Positively charged ions are called
      1. anions
      2. cations
      3. cathodes
      4. anodes
   5. Negatively charged ions are called
      1. anions
      2. cations
      3. cathodes
      4. anodes
3. 3.

   Match the columns.

   COLUMN A	COLUMN B
   1. Electrolyte	a. Negative ions
   2. Cathode	b. Liquids
   3. Anode	c. Positive ions
   4. Anion	d. Negative electrode
   5. Cation	e. Positive electrode

    

4. 4.

   Give one word for the following.

   1. Charge carriers in liquids.
   2. The process used for the refining of impure metals.
   3. The method of coating one metal with another using an electric current.
   4. Positively charged ions in an electrolyte.
   5. Negatively charged ions in an electrolyte.
5. 5.

   Define the term Electrodes.

6. 6.

   Define the term Cathode.