Name the salt used in black and white photography

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Name the salts that are used in black and white photography. Give reactions when they are exposed to light. Define the type of chemical reaction taking place.

CBSE Class X Science SA 2 (3 Marks)

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Answer:

Silver chloride (Agcl) and Silver bromide (AgBr) 2AgCl+ Sunlight →  2Ag+Cl2 2AgBr +Sunlight → 2Ag+Br2  Those reactions in which energy is absorbed (in form of heat, light or electricity) to break down the reactants is called decomposition reaction. Read more on Sarthaks.com - https://www.sarthaks.com/84818/name-the-salts-that-used-black-and-white-photography-give-reactions-when-they-exposed-light


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