The following reaction is used for the preparation of oxygen gas in the laboratory2KClO3(s)  2KCl(s) + 3O2(g)Which of the following statements(s) is/are correct about the reaction? It is a decomposition reaction and endothermic in nature.It is a combination reaction.It is a decomposition reaction and accompanied by release of heat.It is a photochemical decomposition reaction and exothermic in nature.

The correct statement about the reaction 2KClO3(s) → 2KCl(s) + 3O2(g) is: "It is a decomposition reaction and endothermic in nature."

Here's why:

1. It is a decomposition reaction: A decomposition reaction is a type of chemical reaction where one compound breaks down into two or more elements or new compounds. In this case, potassium chlorate (KClO3) breaks down into potassium chloride (KCl) and oxygen gas (O2), so it is indeed a decomposition reaction.

2. It is endothermic in nature: An endothermic reaction is a process or reaction in which the system absorbs energy from its surroundings in the form of heat. The decomposition of potassium chlorate is endothermic because it requires heat to proceed.

The other statements are incorrect:

• It is not a combination reaction: A combination reaction is a reaction where two or more elements or compounds (reactants) combine to form a single compound (product). This is the opposite of what's happening in the given reaction.

• It is not accompanied by the release of heat: As mentioned, this reaction is endothermic, meaning it absorbs heat, not releases it.

• It is not a photochemical decomposition reaction: A photochemical reaction is driven by the absorption of light. There's no indication in the problem statement that light is involved in this reaction.

• It is not exothermic: An exothermic reaction is one that releases heat. This reaction is endothermic, meaning it absorbs heat.