State whether the following statements are “true” or “false”.
Burning of hydrogen and oxygen to form water is an example of physical change.

True

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False

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Solution

The correct option is B False
Physical change: It is a type of reversible change in which the physical properties of a substance will change.
Chemical change: It is a type of irreversible change in which the chemical properties of a substance will change after a reaction.
The burning of hydrogen and oxygen is a type of combustible and exothermic reaction.
This reaction will result in the production of a large amount of heat.
$\underset{Hydrogen}{H_{2} (g)} + \underset{Oxygen}{O_{2} (g)} \to \underset{Water}{2 H_{2} O (l)} + heat$
As the chemical properties of $H_{2} O$ are completely different from $H_{2}$ and $O_{2}$ . Therefore, it is a chemical change
Hence, the given statement is false.

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State whether the following statements are “true” or “false”.Burning of hydrogen and oxygen to form water is an example of physical change.

State whether the following statements are “true” or “false”.
Burning of hydrogen and oxygen to form water is an example of physical change.