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Exothermic Reactions

The reactions...

Question

The reactions which produce light and heat are known as _______________.

A

endothermic reaction

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B

photochemical reaction

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C

exothermic reaction

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D

combustion reaction

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Solution

The correct option is C
exothermic reaction

The reactions which give out light and heat energy are called exothermic reaction, For example - respiration is an exothermic reaction as it releases energy.

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Similar questions

Q. Combustion is the process of burning a fuel, is ___________ .

(A) an oxidation and an exothermic reaction.
(B) a reduction and an endothermic reaction.

Q. A chemical reaction in which heat is given out is called

(a) exothermic reaction
(b) endothermic reaction
(c) decomposition reaction
(d) neutralization reaction

The process of respiration is :

(a) an oxidation reaction which is endothermic

(b) a reduction reaction which is exothermic

(c) a combination reaction which is endothermic

(d) an oxidation reaction which is exothermic

Q. If a chemical equation has '+ heat' on its right hand side, it is definitely a

(a) endothermic reaction.
(b) exothermic reaction.
(c) combination reaction.
(d) neutralization reaction.

Q. Question 15

The following reaction is used for the preparation of oxygen gas in the laboratory.

2 {KClO}_{3} (s) Heat \to 2 KCl (s) + 3 O_{2} (g)

Which of the following statement(s) is (are) correct about the reaction?
(a) It is a decomposition reaction and endothermic in nature.
(b) It is a combination reaction.
(c) It is a decomposition reaction and accompanied by release of heat.
(d) It is a photochemical decomposition reaction and exothermic in nature.

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