Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
EasyWhich alloy contains $Cu$ and $Zn$?
- ABronze
- BCopper
- CBrass
- DSteel
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In the leaching of $Ag_2S$ with $NaCN$,a stream of air is also passed. This is because of:
Easy
View SolutionWhat is the percentage of carbon in steel?
Easy
View SolutionList-$I$ shows reactions involved in the metallurgy of $Pb$ (lead) and List-$II$ shows the names of the processes. Match List-$I$ with List-$II$ and select the correct code for your answer.
List-$I$ List-$II$ $(P) \ PbS + 2PbO \xrightarrow{\Delta} 3Pb + SO_2 \uparrow$ $(1) \ \text{Smelting}$ $(Q) \ PbS + \frac{3}{2}O_2 \xrightarrow{\Delta} PbO + SO_2 \uparrow$ $(2) \ \text{Self reduction}$ $(R) \ PbCO_3 \xrightarrow{\Delta} PbO + CO_2 \uparrow$ $(3) \ \text{Calcination}$ $(S) \ PbO + C \xrightarrow{\Delta} Pb + CO \uparrow$ $(4) \ \text{Roasting}$
| List-$I$ | List-$II$ |
| $(P) \ PbS + 2PbO \xrightarrow{\Delta} 3Pb + SO_2 \uparrow$ | $(1) \ \text{Smelting}$ |
| $(Q) \ PbS + \frac{3}{2}O_2 \xrightarrow{\Delta} PbO + SO_2 \uparrow$ | $(2) \ \text{Self reduction}$ |
| $(R) \ PbCO_3 \xrightarrow{\Delta} PbO + CO_2 \uparrow$ | $(3) \ \text{Calcination}$ |
| $(S) \ PbO + C \xrightarrow{\Delta} Pb + CO \uparrow$ | $(4) \ \text{Roasting}$ |
Medium
View SolutionRailway wagon axles are made by heating rods of iron embedded in charcoal powder. The process is known as
Medium
View SolutionIdentify the products of the reaction: $4FeCr_2O_4 + 8Na_2CO_3 + 7O_2 \rightarrow ?$
Medium
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