Sodium thiosulphate is used in photography to :-

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General Principles and processes of Isolation of Elements

medium

Sodium thiosulphate is used in photography to :-

Reduce $AgBr$ in to metallic $Ag$

Dissolve out $Ag$ produced by reduction

Remove unaffected $AgBr$ in the photographic film or plate

None of these

Solution

In photography, undecomposed $AgBr$ is removed with the help of sodium thiosulphate, i.e., hypo.

$\underset{\text { sodium bromide }}{ AgBr }+\underset{\text { sodium thiosulphate }}{2 Na _2 S _2 O _3} \rightarrow \underset{\text { sodium argernto thiosulphate }}{ Na _3\left[ Ag \left( S _2 O _3\right)_2\right]}+ NaBr$

Standard 12

Chemistry

When copper ore is mixed with silica in a reverberatory furnace, copper matte is produced, The copper matte contains_______

easy

In the context of the Hall – Heroult process for the extraction of $Al,$ which of the following statements is false ?

hard

(JEE MAIN-2015)

Poling process is used for

easy

$FeC{r_2}{O_4}$ (chromite) is converted to $Cr$ by following steps :

Chromite $\xrightarrow{I}NaCr{O_4}\,\,\xrightarrow{{II}}\,C{r_2}{O_3}\,\xrightarrow{{III}}\,Cr$

Reagents in $I,\,II$ and $III$ step might be

$I-$ Step $-$ $II-$ Step $-$ $III-$ Step

normal

The element that can be refined by distillation is :

easy

(JEE MAIN-2020)

Sodium thiosulphate is used in photography to :-

Solution

Similar Questions

When copper ore is mixed with silica in a reverberatory furnace, copper matte is produced, The copper matte contains_______

In the context of the Hall – Heroult process for the extraction of $Al,$ which of the following statements is false ?

Poling process is used for

$FeC{r_2}{O_4}$ (chromite) is converted to $Cr$ by following steps : Chromite $\xrightarrow{I}NaCr{O_4}\,\,\xrightarrow{{II}}\,C{r_2}{O_3}\,\xrightarrow{{III}}\,Cr$ Reagents in $I,\,II$ and $III$ step might be $I-$ Step $-$ $II-$ Step $-$ $III-$ Step

The element that can be refined by distillation is :

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$FeC{r_2}{O_4}$ (chromite) is converted to $Cr$ by following steps :

Chromite $\xrightarrow{I}NaCr{O_4}\,\,\xrightarrow{{II}}\,C{r_2}{O_3}\,\xrightarrow{{III}}\,Cr$

Reagents in $I,\,II$ and $III$ step might be

$I-$ Step $-$ $II-$ Step $-$ $III-$ Step