Ethylene (C2H4 or H2C=CH2) is nonpolar molecule and gaseous plant hormone, It is responsible for senescence in plants.
- It is essential natural plant hormone and is used to force fruit ripening in agriculture.
- It can be used to create a chemical weapon called sulfur mustard gas.
- It is olefiant gas which is used to make anaesthetics, refrigerants and other chemicals.
- In laboratory, ethylene and acetylene can be distinguished by Tollens reagent.
- Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the Hardness in water.
📌 Remember – The five major groups of plant hormones auxins, cytokinins, gibberellins, ethylene, and abscisic acid (ABA). Ethylene glycol has a low freezing point that’s why it is added to aviation gasoline to prevents the freezing of petrol. Acetylene is used in the artificial ripening of fruits.
ETHYLENE : MULTIPLE CHOICE QUESTION
Q. Fruit ripening hormone is ? [UKPSC RO/ARO]
(a) Ethylene (b) Auxin (c) Kinetin (d) All of these
Q. Which of the following organic compounds is synonymous with olefiant gas which is used to make anaesthetics, refrigerants and other chemicals ? [SSC CGL 2023]
(a) Ethylene (b) 1-Pentene (c) Methane (d) Butane
Q. In laboratory, ethylene and acetylene can be distinguished by ? [UPTET 2017]
(a) Br2/H2O (b) KMnO4 (c) Tollens reagent (d) Fehling solution
Q. Which of the following plant hormone is responsible for senescence ? [MPSC 2022]
(a) Auxin (b) Cytokinin (c) Ethylene (d) Abscisic Acid
Q. Ethylene is a molecule. [SSC CHSL 2017]
(a) polar (b) ionic (c) covalent (d) nonpolar
Q. Which among the following gases is used in the artificial ripening of fruits ? [SSC MTS 2022]
(a) Argon (b) Freon (c) Helium (d) Acetylene
Q. The leaves of a tree fall when the concentration of _____ in it increases. [UPPSC 2017]
(a) Gibberellin (b) Auxins (c) Ethylene (d) Cytokinins
Q. The chemical used for artificial ripening of green fruit is ? [MP Police SI 2017]
(a) Carbon dioxide (b) Ethylene (c) Ethane (d) Carbide
🔗 Click the link for General Science Multiple Choice Questions online Quiz