Sodium catches fire when it comes in contact with water because:

The reaction of sodium metal with water is highly heat producing due to which the NaOH formed during the reaction catches fire and burns causing little explosions.

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The reaction of sodium metal with water is highly heat producing due to which the hydrogen gas formed during the reaction catches fire and burns causing little explosions.

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The reaction of sodium metal with water is highly heat producing due to which the oxygen gas formed during the reaction catches fire and burns causing little explosions

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Sodium is an explosive metal.

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Solution

The correct option is D. The reaction of sodium metal with water is highly heat producing due to which the hydrogen gas formed during the reaction catches fire and burns causing little explosions.
Sodium reacts vigorously with cold water forming sodium hydroxide (NaOH) and hydrogen ( $H_{2}$ ). The reaction of sodium metal with water is highly heat producing due to which the hydrogen gas formed during the reaction catches fire and burns causing little explosions.

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Similar questions

During the reaction of some metals with dilute hydrochloric acid, the following observations were made.

The reaction of sodium metal is found to be highly explosive because:

The reaction of sodium metal is found to be highly explosive. Comment.

Assertion:- Sodium metal reacts violently with water and burns with a yellow flame.

Reason:- A large amount of heat is generated and hydrogen evolved immediately catches fire.

Why reaction of sodium with dilute HCl highly explosive?

An organic compound A having the molecular formula $C_{3} H_{8} O$ is a liquid at room temperature. The organic liquid A reacts with sodium metal to evolve a gas which burns causing a little explosion. When the organic liquid A is heated with concentrated sulphuric acid at $170^{o} C$ , it forms a compound B which decolourises bromine water. The compound B adds on one molecule of hydrogen in the present of Ni as catalyst to form compound C which gives substitution reactions with chlorine.

(a) What is compound A ?

(b) What is compound B ?

(d) What is compound C ?

(e) What type of reaction takes place when B is converted into C ?

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