Jan Ingenhousz experiment

Q. In an experiment, demonstrating the evolution of O₂ in Hydrilla, sodium bicarbonate is added to water in the experimental setup. If all other conditions are favorable, what would be the end result?

1. Amount of O₂ evolved increases as CO₂ in water is absorbed by sodium bicarbonate.
2. Amount of oxygen evolved increases as the availability of CO₂ increases.
3. Amount of oxygen evolved decreases as the availability of carbon dioxide increases.
4. Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate.

Q. To prove that plants required sunlight to produce oxygen, Ingenhousz repeated the experiment of

1. Priestly
2. van Niel
3. Engelmann
4. von Sachs

Q. The role of light in photosynthesis was first discovered by

1. Senebier
2. J. Priestley
3. Sachs
4. Ingenhouz