1.

Name the salts that are used inblack andwhite photography. Give reactions when they are exposed to light . Define the type of chemical reaction taking place.

Answer»

Solution :Silver chloride (AgCl) and Silver bromide (AGBR)
`2AgCl overset ("Sunlight")rarr2Ag+Cl_(2)`
`2AgBr overset("Sunlight")rarr2Ag+Br`
Those RECTIONS in which energy is absorbed (in from of heat, light or electricity ) to BREAK down the RECTANTS is called DECOMPOSITION reaction .


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