(a) Solution 'A' gives pink colour when a drop of phenolphthalein indicator is addedto it. Solution 'B' gives a red colour when a drop of methyl orange is added to it.What type of solutions are 'A' and 'B'and which of these will have higher pH?(b) Give reasons:(b) White silver chloride turns grey in sunlight.(ii) Brown coloured copper powder on heating in air turns into black colouredsubstance.

(a) Solution 'A' gives pink colour when a drop of phenolphthalein indi

1.	(a) Solution 'A' gives pink colour when a drop of phenolphthalein indicator is addedto it. Solution 'B' gives a red colour when a drop of methyl orange is added to it.What type of solutions are 'A' and 'B'and which of these will have higher pH?(b) Give reasons:(b) White silver chloride turns grey in sunlight.(ii) Brown coloured copper powder on heating in air turns into black colouredsubstance.
Answer» <html><body><p><strong>Answer:</strong></p><p>please mark as brilliance </p><p><strong>Explanation:</strong></p><p>Silver chloride turns grey on <a href="https://interviewquestions.tuteehub.com/tag/exposure-980813" style="font-weight:bold;" target="_blank" title="Click to know more about EXPOSURE">EXPOSURE</a> to sunlight because it decomposes in presence of sunlight to give silver (Ag).</p><p></p><p>This black substance formed on the surface is because of the <a href="https://interviewquestions.tuteehub.com/tag/process-11618" style="font-weight:bold;" target="_blank" title="Click to know more about PROCESS">PROCESS</a> called surface oxidation. Upon <a href="https://interviewquestions.tuteehub.com/tag/heating-1017297" style="font-weight:bold;" target="_blank" title="Click to know more about HEATING">HEATING</a>, the copper metal melts gradually and turns black on the surface. This is because the copper powder present in the china <a href="https://interviewquestions.tuteehub.com/tag/dish-440567" style="font-weight:bold;" target="_blank" title="Click to know more about DISH">DISH</a> reacts with the atmospheric <a href="https://interviewquestions.tuteehub.com/tag/oxygen-1144542" style="font-weight:bold;" target="_blank" title="Click to know more about OXYGEN">OXYGEN</a> and forms copper (II) oxide.</p></body></html>

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