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Sodium thiosulphate is added in photography to
Options
(a) improve colour of photograph
(b) remove unreacted AgBr
(c) form latent image
(d) to form a better picture
Correct Answer:
remove unreacted AgBr
Explanation:
AgBr + 2 Na₂S₂O₃ → Na₃ [Ag (S₂O₃)₂] + NaBr
Solution of sodium thiosulphate is used as fixer. It forms a soluble complex with silver halides. After fixing, the film can safely be brought out into daylight.
Related Questions: - 2.5 Litre of 1 M NaOH solution mixed with another 3 litre of 0.5 M NaOH solution.
- Helium atom is two times heavier than a hydrogen molecule, the average kinetic energy
- Decreasing order of nucleophilicity is
- The element, with atomic number 118, will be
- How many coulombs are required for the oxidation of 1 mole H₂O to O₂
Topics: D and F Block Elements
(91)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- 2.5 Litre of 1 M NaOH solution mixed with another 3 litre of 0.5 M NaOH solution.
- Helium atom is two times heavier than a hydrogen molecule, the average kinetic energy
- Decreasing order of nucleophilicity is
- The element, with atomic number 118, will be
- How many coulombs are required for the oxidation of 1 mole H₂O to O₂
Topics: D and F Block Elements (91)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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