Geetha Iyer Solutions for Exercise 4: EXERCISE
Geetha Iyer Science Solutions for Exercise - Geetha Iyer Solutions for Exercise 4: EXERCISE
Attempt the practice questions from Exercise 4: EXERCISE with hints and solutions to strengthen your understanding. Science Now 8 solutions are prepared by Experienced Embibe Experts.
Questions from Geetha Iyer Solutions for Exercise 4: EXERCISE with Hints & Solutions
What is the advantage of a dry cell over a wet cell?
Explain the method of copper plating an iron nail.
What is an electrolytic cell? Draw its schematic diagram.
Draw a schematic diagram of the set-up for electrorefining copper.
What are electrodes, and how do they function?
When you dissolve salt in water, it conducts electricity whereas salt crystals or powder does not conduct electric current. Explain why. (Hint: Formation of ions in the solution).
In case of a fire, firemen shut off the electricity supply for the area before they use the water hoses to put out the fire. Why? (Hint: Think of conductivity of water)
Identify the chemical process shown in the following diagram and label the set-up.
