Question

An example of spontaneous combustion is the burning of (1) firecrackers (2). magnesium ribbon (3) forest. (4). Wax

Answer 1

Explanation:

it Is forest as sometimes dry leaves catch fire on their own

Answer 2

Answer:

The answer to the question-"An example of spontaneous combustion is the burning of (1) firecrackers (2). magnesium ribbon (3) forest. (4). Wax" is-

(3) forest .

Explanation:

Spontaneous combustion-

Without the submission of heat , the type of combustion reaction which occurs on its own, is known as Spontaneous combustion.

Examples -

The waste or the oily rags ,that cannot be stored for long as they can  catch fire at any instance .As, they can suddenly heat up resulting to fire. Second is with coal piles and so with underground coal fields.

Like,

(1) firecrackers -

Bursting of firecrackers comes under explosion.

(2). Magnesium ribbon-

In combination reaction the Burning of Magnesium ribbon in the air takes place.

(3) forest-

Forest fire are the examples of the spontaneous combustion.

(4). Wax -

Burning of wax is not an example of combustion reaction.

Therefore, forest fire is an example of spontaneous combustion.

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