Advertisements
Advertisements
प्रश्न
Why photosynthesis is a chemical reaction?
Advertisements
उत्तर
-
Photosynthesis is a process in which light energy from the sun is used by the plants to prepare starch from carbon dioxide and water.
-
The sunlight uses the chemical reaction between carbon dioxide and water, which finally ends up in the production of starch (photo means light and synthesis means production). These chemical reactions used by light are called photochemical reactions.
APPEARS IN
संबंधित प्रश्न
Opening a gas cylinder knob converts _____ fuel into ______fuel. This is an example of _____ change.
Define catalysis.
On immersing an iron nail in CuSO4 solution for a few minutes, you will observe ______.
The head of the matchstick contains ______ and ______.
The head of a matchstick contains red phosphorous.
Decaying of vegetables and fruits due to microbes.
Match the following
| i. | Quick lime | a. | Calcium hydroxide |
| ii. | Slaked lime | b. | Calcium oxide |
| iii. | Thermolysis | c. | Light |
| iv. | Photochemical | d. | Heat |
Match the following
| i. | Apples | a. | Oxygen |
| ii. | Fatty acids | b. | Browning |
| iii. | Acid rain | c. | Rancidity |
| iv. | Solid camphor | d. | Air pollution |
What happens to the steel benches and tables during the rainy season?
Reason out
The speed of a certain reaction is influenced by the catalyst.
