Which of the following practices will not come under green chemistry?
(i) If possible, making use of soap made of vegetable oils instead of using synthetic detergents.
(ii) Using H2O2 for bleaching purpose instead of using chlorine based bleaching agents.
(iii) Using bicycle for travelling small distances instead of using petrol/ diesel based vehicles.
(iv) Using plastic cans for neatly storing substances.

Answer: Option (iv)
Solution: (i)
Making use of soap made of vegetable oils instead of using synthetic detergents is an example of green chemistry. This is because vegetable oils are renewable resources and biodegradable, whereas synthetic detergents are often made from non-renewable resources and can have harmful effects on the environment.
(ii) Using H2O2 for bleaching purpose instead of using chlorine-based bleaching agents is also an example of green chemistry. Chlorine-based bleaching agents can release harmful chemicals into the environment, whereas H2O2 is a more environmentally friendly alternative.
(iii) Using a bicycle for travelling small distances instead of using petrol/diesel-based vehicles is another example of green chemistry. This is because bicycles do not emit harmful pollutants into the environment, unlike petrol/diesel-based vehicles.
(iv) Using plastic cans for neatly storing substances is not an example of green chemistry. This is because plastic is not biodegradable and can have harmful effects on the environment.

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