A) 80%\[C{{O}_{2}}\]and 20%\[{{O}_{2}}\]
B) 80%\[{{C}_{2}}{{H}_{4}}\]and 20%\[C{{O}_{2}}\]
C) 80%\[{{O}_{2}}\]and 20%\[C{{O}_{2}}\]
D) 80%\[C{{O}_{2}}\]and 20%)\[{{C}_{2}}{{H}_{2}}\]
Correct Answer: B
Solution :
80%\[{{C}_{2}}{{H}_{4}}\]and 20%\[C{{O}_{2}}\]is the combination used for fruit ripening,\[{{C}_{2}}{{H}_{4}}\]is the .gaseous plant growth regulator which is produced in very minute quantities by plant tissues.
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