Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
EasyRefractory materials are generally used in furnaces because
- AThey possess great structural strength
- BThey can withstand high temperature
- CThey are chemically inert
- DThey do not require replacement
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Similar Questions
Which of the following reactions is $NOT$ entropy-driven with reference to extractive metallurgy? (unbalanced reactions)
Medium
View SolutionWhich alloy contains $Cu$,$Sn$,and $Zn$?
Easy
View SolutionMatch the following:
List-$I$ List-$II$ $A. Al_2O_3 + 2NaOH + 3H_2O \rightarrow 2Na[Al(OH)_4]$ $I. \text{Roasting}$ $B. Ni(CO)_4 \xrightarrow{230^{\circ}C} Ni + 4CO$ $II. \text{Calcination}$ $C. Fe_2O_3 \cdot 3H_2O \xrightarrow{\Delta} Fe_2O_3 + 3H_2O$ $III. \text{Vapour phase refining}$ $D. 2PbS + 3O_2 \rightarrow 2PbO + 2SO_2$ $IV. \text{Electrolysis}$ $V. \text{Leaching}$
The correct answer is:
| List-$I$ | List-$II$ |
| $A. Al_2O_3 + 2NaOH + 3H_2O \rightarrow 2Na[Al(OH)_4]$ | $I. \text{Roasting}$ |
| $B. Ni(CO)_4 \xrightarrow{230^{\circ}C} Ni + 4CO$ | $II. \text{Calcination}$ |
| $C. Fe_2O_3 \cdot 3H_2O \xrightarrow{\Delta} Fe_2O_3 + 3H_2O$ | $III. \text{Vapour phase refining}$ |
| $D. 2PbS + 3O_2 \rightarrow 2PbO + 2SO_2$ | $IV. \text{Electrolysis}$ |
| $V. \text{Leaching}$ |
The correct answer is:
The major components in "Gun Metal" are
Match List-$I$ with List-$II$:
List-$I$ List-$II$ $(a)$ Sodium Carbonate $(i)$ Deacon $(b)$ Titanium $(ii)$ Castner-Kellner $(c)$ Chlorine $(iii)$ Van-Arkel $(d)$ Sodium hydroxide $(iv)$ Solvay
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
|---|---|
| $(a)$ Sodium Carbonate | $(i)$ Deacon |
| $(b)$ Titanium | $(ii)$ Castner-Kellner |
| $(c)$ Chlorine | $(iii)$ Van-Arkel |
| $(d)$ Sodium hydroxide | $(iv)$ Solvay |
Choose the correct answer from the options given below:
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