The reaction which is used in black and white photography is:
- A$2 KClO_{3}(s) \xrightarrow{\text{Heat}} 2 KCl(s) + 3 O_{2}(g)$
- B$CH_{4}(g) + Cl_{2}(g) \xrightarrow{\text{Sunlight}} CH_{3}Cl(g) + HCl(g)$
- C$2 NaCl(s) \xrightarrow{\text{Electric current}} 2 Na(s) + Cl_{2}(g)$
- D$2 AgBr(s) \xrightarrow{\text{Sunlight}} 2 Ag(s) + Br_{2}(g)$
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$(ii)$ Why are the amounts of gases collected in the two test tubes not of the same volume?
$(iii)$ What type of reaction is this?
$(iv)$ Why should we use salt water?
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$(iii)$ What type of reaction is this?
$(iv)$ Why should we use salt water?
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View SolutionWhich two observations will be made when quicklime is added to water? Mention two uses of the product obtained.
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