D) ba is the correct answer
Answer:
Hydroxy(oxo)bismuthine oxide
It is absorbing because it is going through endothermic process (absorbing heat) and the change in color means it is undergoing a chemical reaction
Answer:

Explanation:
1. First take the cylinder volume formula:

2. Then take the values for the radius and the height of the cylinder and replace them into the formula:

3. Solve the equation:



Answer:
Paper Chromatography
Explanation:
Most leaves are green due to chlorophyll pigments of different types like chlorophyll A, chlorophyll B, etc. All these pigments will be seperated according to their molecular composition. So, the correct option is 'Paper Chromatography'.