Question

Which of the following statement is correct?
(i) Electrolysis of water is an example of
decomposition reaction
(ii) Nitrogen is used to prevent rancidity
(iii) Melting of ice is a physical change
(iv) Corrosion requires presence of both air and
moisture ​

Answer 1

Answer:

( i ) true

( ii ) true

( iii ) true

( iv ) true

Answer 2

All the given statements are correct.

• The statements are correct as -

1. The method is a great illustration of an ionic breakdown method. When oxygen and hydrogen are created as a response to an electric charge running across liquid, the phenomena take place. In this case, the activation energy for the breakdown process is provided by electrical energy.
2. Nitrogen might be used to preserve a recent trial for a long time since they keep the oil from becoming bad. Air and oil do not interact when this gas is used as an inundating gas.
3. When Ice melts, there isn't any fresh or recent material which is created; instead, the substance changes from solid to liquid. Therefore the process is a physical transformation.
4. In general, metal components corrode more quickly the longer they are exposed to humid air. When the air's moisture content reaches a certain level of humidity, this form of atmospheric corrosion may start to happen.

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