Question

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Assertion: The decomposition of silver bromide is used in black and white photography.
Reason: Reactions in which energy is released are known as an exothermic reactions.

Answer 1

Answer:

both assertion and reason are correct but reason is not correct explanation of assertion

Answer 2

Silver bromide is water insoluble salt known for its unusual sensitivity to light and this property has allowed silver halides to become the basis of modern photographic materials. In the presence of light decomposition of silver bromide gives silver which turns grey on exposure to light.

An exothermic reaction is a chemical reaction that releases energy through light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation: reactants → products + energy.

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