Tag: chemistry
Questions Related to chemistry
Which of the following gases is responsible for the flame at the mouth of Bessemer converter?
Carbon cannot be used to produce magnesium by chemical reduction of $MgO$ because:
Which of the following metals occurs in nature principally oxide ores.
When $FeCr _2O _4$ (chromite) is reduced with Carbon in an electric-arc furnace:
Carbon reduction process is not comrnerically applicable for which of the following set of oxides to extract the respective metal?
(I) ZnO (II)$Fe _2O _3$ (III)$Al _2O _3$ (IV) $SnO _2$ (V) MgO
Carbon can be used to reduce the number of oxides and other compounds, and because of the low cost and availability of coke, this method is widely used. But the disadvantages are that:
Metals which can be obtained by carbon reduction of their oxides are _________.
From the following identify the correct ones.
Identify the metal $M$ whose extraction is based on the following reactions:
$MS+2{ O } _{ 2 }\longrightarrow M{ SO } _{ 4 }$
$2MS+3{ O } _{ 2 }\longrightarrow 2MO+2S{ O } _{ 2 }$
$MS+2MO\longrightarrow 3M+S{ O } _{ 2 }$
$MS+M{ SO } _{ 4 }\longrightarrow 2M+2S{ O } _{ 2 }\quad $