Which of the following factor enhances burning of wood?
Presence of Water vapour
Presence of Oxygen
Presence of Nitrogen
Presence of Carbon dioxide
Oxygen supports burning.
3 factors necessary for photosynthesis to take place :
1. Presence of sunlight 2. Presence of chlorophyll 3. Presence of water and carbon-dioxide
When air is blown from mouth into a test-tube containing lime water, the lime water turns milky due to the presence of : (a) oxygen (b) carbon dioxide (c) nitrogen (d) water vapour
Question 11 When air is blown from the mouth into a test-tube containing limewater, the limewater turned milky due to the presence of (a) oxygen (b) carbon dioxide (c) nitrogen (d) water vapour