An ore on treatment with dilute hydrochloric acid gives back effervescence. From the following list, what type of ore is this?
[sulfide, carbonate, phosphate, nitrate]

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Solution

Carbonates on treatment with dilute $H C l$ produces back effervescence. The method of calcination is used for this purpose.
The series of reaction involved can be given as:

(i) $Z n C O_{3} ⟶ Z n O + C O_{2}$
(ii) $Z n O + C ⟶ Z n + C O$

So, the correct answer is carbonate.

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An ore on treatment with dilute hydrochloric acid gives back effervescence. From the following list, what type of ore is this?[sulfide, carbonate, phosphate, nitrate]

Carbonates on treatment with dilute HCl produces back effervescence. The method of calcination is used for this purpose.The series of reaction involved can be given as:(i) ZnCO3⟶ZnO+CO2(ii) ZnO+C⟶Zn+COSo, the correct answer is carbonate.

An ore on treatment with dilute hydrochloric acid gives back effervescence. From the following list, what type of ore is this?
[sulfide, carbonate, phosphate, nitrate]

Carbonates on treatment with dilute $H C l$ produces back effervescence. The method of calcination is used for this purpose.
The series of reaction involved can be given as:

(i) $Z n C O_{3} ⟶ Z n O + C O_{2}$
(ii) $Z n O + C ⟶ Z n + C O$

So, the correct answer is carbonate.