INBDE (Integrated National Board Dental Examination) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Ace your INBDE with our comprehensive practice exam. Featuring detailed explanations, interactive flashcards, and a wide array of multiple-choice questions designed to mirror the real test. Get ready to surpass your expectations!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What agent removes undeveloped silver halide crystals?

Sodium Carbonate
Ammonium Thiosulfate
Sodium Thiosulfate
Hydroquinone

The correct answer is: Ammonium Thiosulfate

Ammonium thiosulfate is used to remove undeveloped silver halide crystals during the photographic developing process. When film is developed, silver halide crystals that were not exposed to light remain on the film as undeveloped crystals. Ammonium thiosulfate helps to dissolve and remove these remaining undeveloped crystals, leaving behind the developed image on the film. Sodium carbonate is used as a buffering agent in developers to maintain a stable pH. Sodium thiosulfate is used as a fixing agent to remove unexposed silver halide crystals after development. Hydroquinone is a developing agent that reduces exposed silver halide crystals to metallic silver.