Assertion (A) : The extraction of metals from their sulphide ores cannot take place without roasting of the ore. Reason (R) : Roasting converts sulphide ores directly into metals.

Extraction of Metals Based on Reactivity, Roasting of Sulphide Ores | PadhAiPro

Question

Assertion-ReasonExtraction of Metals Based on ReactivityRoasting of Sulphide OresCBSE PYQ

Similar Questions

Name the ore of mercury and state the form in which it is found in nature. Write the chemical equations along with the condition required for the reactions involved in the extraction of mercury from its ore.

TextMinerals and OresExtraction of Metals Low in Activity SeriesRoasting of Sulphide Ores

State giving reason the reduction process to obtain the following metals from their compounds :

CASE_STUDIESExtraction of Metals Based on ReactivityCorrosion of Metals Due to Environmental Factors

State giving reason for the change in appearance observed when each of the following metal is exposed to atmospheric air for some time :

CASE_STUDIESExtraction of Metals Based on ReactivityCorrosion of Metals Due to Environmental Factors

Assertion (A) : Metals in the middle of activity series are found in nature as sulphides or carbonates. Reason (R) : The sulphide ores are calcinated whereas carbonate ores are roasted to extract metals from them.

Assertion-ReasonExtraction of Metals in Middle of Activity SeriesRoasting of Sulphide OresCalcination of Carbonate Ores

Name two metals which are found in nature in the free state.

TextExtraction of Metals Based on Reactivity

Give reasons (a) Platinum, gold and silver are used to make jewellery. (b) Sodium, potassium and lithium are stored under oil. (c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. (d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction.

CASE_STUDIESReactivity Series of MetalsExtraction of Metals Based on Reactivity