History, asked by niteshmahajan478, 2 months ago

An efflorescent substance which leaves a residue having the same colour as the substance and
evolves a gas which changes the colour of cobalt chloride paper.
luontoin colourless gases which on cooling combine and condense on the​

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Answered by saugatl606
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Answer:

i don't know the write answer of this questin

Explanation:

very very sorry do it with the help of your subject teacher

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