Question

Beena sets up two experiments, as shown in the diagram below. She placed
both the set-ups in sunlight for 9 hours. On noting down her observations for
both set-ups she found that there was more oxygen collected in test tube X
as compared to test tube y. What conclusion could she best draw from this
experiment?
[2018]
Test tube X
Test tube
|--Beaker
Funnel
Normal
water
Baking
Hydrill
soda added
to water
Set-up 1
Set-up 2
(a) The rate of photosynthesis decreases when there is more carbon dioxide.
(b) Baking soda is required for photosynthesis.
(c) Carbon dioxide is required by the plant for photosynthesis.
(d) The rate of photosynthesis increases when there is more carbon dioxide.
baking soda to water produces CO2

Answer 1

Q.13) State and explain coulombs law in scalar form. Deline unit change from

coulombs law Calculate the electrostatic force between two prolong ,

which are 10""m apart.(Given-Charge on proton e – 1.64107C

(4)