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| Q. |
Which of the following chemicals is used in photography? |
| A. | Aluminium hydroxide |
| B. | Silver bromide |
| C. | Potassium nitrate |
| D. | Sodium chloride |
| Answer» B. Silver bromide | |
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Explanation: Silver bromide (AOBr), a soil , pale-yellow, water insoluble salt well known (along with other silver hali(les) for its unusual sensitivity to light:. This properly has allowed silver halides to become the basis of modern photographic materials. AgBr is widely used in photographic films and is believed by some to have been used for making the Shroud of Turin. The salt can be found naturally as the mineral bromargyrite (bromyrite). |
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