Q1.What is another common name for copper sulphate, also referred to as neela thotha?

Q2.What is the characteristic color of a copper sulphate solution as described in Activity 5.7?

Q3.When an iron nail is dropped into a copper sulphate solution, what change in color is observed in the solution?

Q4.The change in colour of copper sulphate solution from blue to green, after reacting with iron, is due to the formation of which new substance?

Q5.What is the brown deposit formed on the iron nail when it reacts with copper sulphate solution?

Q6.When vinegar is mixed with baking soda, what gas is produced, causing a hissing sound and bubbles?

Q7.As per Activity 5.8, what is the chemical name for baking soda?

Q8.What is the chemical name for vinegar as mentioned in the reaction with baking soda?

Q9.Which of the following is a standard test for the presence of carbon dioxide gas?

Q10.When carbon dioxide is passed through lime water, which new substance is primarily formed that makes the lime water milky?