O/N 2014/P11/Q15
Which is not true about the process of photosynthesis?
A Carbon dioxide and water react in a 1: 1 molar ratio.
B Glucose is produced and can be used as a source of energy.
C Oxygen is produced.
D The reaction is exothermic.
Answer: D
Explaination:
The equation for photosynthesis is:
6CO2 + 6H2O → 6O2 + C6H12O6
Photosynthesis is an endothermic reaction in which plants absorb CO2 and H2O from surrounding in the presence of sunlight to produce glucose (as energy) and oxygen. This process makes atmosphere cool.
Now check the molar ratio of CO2 and H20 by considering the following table.
| CO2 | H2O |
No. of moles | 6 | 6 |
Molar ratio | 1 | 1 |
Both 6 are cancelled out and the answer will be 1:1 molar ratio.
