Question

Read the given statements and select the correct option.
Statement 1: Phosphorus burns in air at room temperature,
Statement 2: It is an example of spontaneous combustion.
A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B) Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C) Statement 1 is true and statement 2 is false.
D) Both statements 1 and 2 are false.​

Answer 1

Answer:

A is the right answer.

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Answer 2

Answer:

Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.i.e.(A).

Explanation:

• A substance burning in the presence of oxygen produces heat and light, a process known as combustion.

• Spontaneous combustion is a type of combustion where material unexpectedly catches fire without any externally visible cause.
• At room temperature, phosphorus burns in the air. This is an example of spontaneous combustion. Rapid combustion can be seen in the burning of matches and cooking gas. An explosion is symbolized by the cracker's ignition.
• The reaction proceeds as follows:-

                            $\mathrm{P_4+5O_2\rightarrow P_4O_{10}}$                          (1)

Where,

P₄=phosphorous

O₂=oxygen

P₄O₁₀=Phosphorus pentoxide

So, the correct answer among the given options is (A).

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