Identify X, Y and Z in the given graph
showing percentage of different gases
in air and select the incorrect statement
regarding them.
Read the following statements, regarding
X, Y and Z and select the correct ones.
(i) Z is a major contributor of global
warming.
(ii) X is a life supporting gas.
(iii) Y could be used by plants to prepare food.
(iv) Z is oxygen which is used for burning.
(v) X is a major component of fertilisers.
(vi) Y is used to extinguish fire.
A (i) and (ii) only
B (ii), (iii) and (vi) only
C (i), (iv) and (v) only
D (i), (ii), (iii), (iv), (v) and (vi)
Wait. I'm confused. Can someone please explain to me why at first it says to 'select incorrect statement regarding them', and then it says 'read the following statements, regarding X, Y and Z and select the correct ones'?