MCQ
Hypo is used in photography because it is:
- AA strong reducing agent
- BA strong oxidizing agent
- CA strong Complexing agent
- DPhoto sensitive Compound
Explanation:
Hypo forms the complex [Ag(S2O3)2]3− from insoluble Ag.
[Ag(S2O3)2]3− is formed by treatment of Na2S2O3.5H2O with AgBr.
Therefore, Hypo is used in photography because it is a strong Complexing agent.
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| Column I | Column II |
| (a) Osmotic Pressure | $p = K _{ H } \cdot \chi_{ B }$ |
| (b) Relative lowering of vapour pressure | $\frac{\Delta P }{ P _A^o}=\chi_{ B }$ |
| (c) Henry Law | $\Delta T _{ b }= K _{ b } \cdot m$ |
| (d) Elevation in boiling point | p = iCRT |