Class 12ChemistryGeneral Principles and Processes of Isolation of ElementsMix Examples of General Principles and processes of Isolation of Elements
MediumFor the following statements,mark $T$ for true and $F$ for false statement.
Statement $1$: $SnO_2 +$ wolframite,in this $SnO_2$ is magnetic while wolframite is non-magnetic in nature.
Statement $2$: Argentite ore is concentrated by froth floatation method.
Statement $3$: Copper and lead ores are reduced by self-reduction method.
Statement $4$: In metallurgy of $Fe$,$CO$ is used as a reducing agent at low temperature.
Statement $1$: $SnO_2 +$ wolframite,in this $SnO_2$ is magnetic while wolframite is non-magnetic in nature.
Statement $2$: Argentite ore is concentrated by froth floatation method.
Statement $3$: Copper and lead ores are reduced by self-reduction method.
Statement $4$: In metallurgy of $Fe$,$CO$ is used as a reducing agent at low temperature.
- A$T T T F$
- B$F F F T$
- C$F F T T$
- D$T T F F$
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Similar Questions
Read the following statements :
$(I)$ $Al$ has greater affinity than that of $Cr$ for oxygen
$(II)$ $Al$ can be used for reduction of $Fe_2O_3$
$(III)$ Carbon is used for reduction of $PbO$
$(IV)$ $SnO_2$ can be reduced by carbon
Choose the correct set of statement$(s)$:
$(I)$ $Al$ has greater affinity than that of $Cr$ for oxygen
$(II)$ $Al$ can be used for reduction of $Fe_2O_3$
$(III)$ Carbon is used for reduction of $PbO$
$(IV)$ $SnO_2$ can be reduced by carbon
Choose the correct set of statement$(s)$:
Medium
View SolutionEllingham diagrams can be drawn for which of the following?
Medium
View SolutionMatch List-$I$ with List-$II$.
List-$I$ List-$II$ $A$. Bronze $I$. $Cu, Ni$ $B$. Brass $II$. $Fe, Cr, Ni, C$ $C$. $UK$ silver coin $III$. $Cu, Zn$ $D$. Stainless Steel $IV$. $Cu, Sn$
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
| $A$. Bronze | $I$. $Cu, Ni$ |
| $B$. Brass | $II$. $Fe, Cr, Ni, C$ |
| $C$. $UK$ silver coin | $III$. $Cu, Zn$ |
| $D$. Stainless Steel | $IV$. $Cu, Sn$ |
Which of the following processes is $NOT$ involved in the extraction of metal from cassiterite $(SnO_2)$ ore?
Medium
View SolutionMatch the items under List-$I$ with the compounds/elements from the List-$II$. Select the correct answer from the sets $(a), (b), (c)$ and $(d)$.
List-$I$ List-$II$ $(i)$ Explosive $(A)$ $NaN_3$ $(ii)$ Artificial gem $(B)$ $Fe_3O_4$ $(iii)$ Self reduction $(C)$ $Sn$ $(iv)$ Magnetic material $(D)$ $Al_2O_3$ $(E)$ $Pb(N_3)_2$ $(F)$ $Fe_2O_3$ $(G)$ $Cu$ $(H)$ $SiC$
| List-$I$ | List-$II$ |
|---|---|
| $(i)$ Explosive | $(A)$ $NaN_3$ |
| $(ii)$ Artificial gem | $(B)$ $Fe_3O_4$ |
| $(iii)$ Self reduction | $(C)$ $Sn$ |
| $(iv)$ Magnetic material | $(D)$ $Al_2O_3$ |
| $(E)$ $Pb(N_3)_2$ | |
| $(F)$ $Fe_2O_3$ | |
| $(G)$ $Cu$ | |
| $(H)$ $SiC$ |
Medium
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