HARD
Earn 100
What is the name of the test used to detect carbon dioxide?
Important Questions on Air
MEDIUM
When carbon dioxide gas is passed into limewater, its turns milky. What could be the reason? What type of change is this?
HARD
Test the presence of carbon dioxide with a chemical reaction.
MEDIUM
Which of the following gases turns lime water milky?
MEDIUM
Give an example of a chemical reaction in which this change is seen.
Water is a product.
MEDIUM
The gas which turns lime water milky is:
EASY
In the activity showing that carbon dioxide is exhaled during breathing, why does lime water turn milky?
MEDIUM
Write the name of the gas given off when calcium carbonate is heated? (Oxygen/ Hydrogen/ Carbon dioxide)
HARD
Which gas is given off when dilute hydrochloric acid is added to calcium carbonate? How will you test the gas? Write the chemical equations for both reactions.
HARD
What happens when carbon dioxide gas is passed through lime water? Write a word equation for this process. Name the type of change which takes place.
MEDIUM
Carbon dioxide turns lime water milky. Comment.
HARD
Why lime water turns milky on passing carbon dioxide gas into it?
MEDIUM
A pinch of baking soda is added to vinegar in a test tube. Answer this question on the reaction that occurs.
How can we test whether the gas produced is carbon dioxide?
EASY
Write the quadrants in which the following points lie:
HARD
Look at the diagram and answer the following questions:
What tests will you perform to identify these gases?
MEDIUM
Give reason for the following:
Carbon dioxide turns lime water milky.
MEDIUM
Explain the following:
a) Lime water turns milky on passing carbon dioxide gas into it.
MEDIUM
Give reason for the following.
When you blow air through lime water it turns milky.
MEDIUM
(a) What would happen if we breathe out in a freshly prepared solution of lime water?
(b) Why does this happen?
MEDIUM
When carbon dioxide is passed through lime water, it turns milky due to the formation of _____. (Write the name of compound)
MEDIUM
Write the chemical equation for the reaction used to test for carbon dioxide.
