(D) The process of refining blister copper using green logs of wood is known as $poling$. Green logs of wood release hydrocarbon gases (like $CH_4$) u

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

To reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood

(D) The process of refining blister copper using green logs of wood is known as $poling$. Green logs of wood release hydrocarbon gases (like $CH_4$) upon heating. These gases reduce the cuprous oxide $(Cu_2O)$ impurities present in the blister copper back to metallic copper $(Cu)$. The reaction is: $3Cu_2O + CH_4 \to 6Cu + 2H_2O + CO$.

Class 12 Chemistry General Principles and Processes of Isolation of Elements Refining of crude Metal

Difficult

In order to refine "blister copper",it is melted in a furnace and stirred with green logs of wood. The purpose is:

A
To expel the dissolved gases in blister copper
B
To bring the impurities to surface and oxidize them
C
To increase the carbon content of copper
D
To reduce the metallic oxide impurities with hydrocarbon gases liberated from the wood

Explore More

Browse All

Question Bank

All Subjects

Class 12 Questions

Class 12

Chemistry Questions

Chapter

General Principles and Processes of Isolation of Elements

Subtopic

Refining of crude Metal

In van Arkel method,if $I_2$ is introduced at $1700 \ K$ over impure metal,the product will be :

Easy

View Solution

The formation of $Ni(CO)_4$ and its subsequent decomposition into $Ni$ and $CO$ forms the basis of the Mond process.
$Ni + 4CO$ $\xrightarrow{T_1} Ni(CO)_4$ $\xrightarrow{T_2} Ni + 4CO$
What are the values of $T_1$ and $T_2$?

Medium

View Solution

Which method is used to obtain ultra-pure copper?

Easy

View Solution

Match the elements in Column-$I$ with methods of purification in Column-$II$.

Column-$I$ Column-$II$

$(a)$ Boron $(i)$ Van Arkel method

$(b)$ Tin $(ii)$ Mond's process

$(c)$ Zirconium $(iii)$ Liquation

$(d)$ Nickel $(iv)$ Zone refining

MediumNEET 2020

View Solution

For the electrolytic refining of aluminium (Hoopes' process),the three fused layers consist of:

Bottom Layer Middle Layer Upper Layer

Medium

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

Column-$I$	Column-$II$
$(a)$ Boron	$(i)$ Van Arkel method
$(b)$ Tin	$(ii)$ Mond's process
$(c)$ Zirconium	$(iii)$ Liquation
$(d)$ Nickel	$(iv)$ Zone refining

In order to refine "blister copper",it is melted in a furnace and stirred with green logs of wood. The purpose is:

Similar Questions

In van Arkel method,if $I_2$ is introduced at $1700 \ K$ over impure metal,the product will be :

The formation of $Ni(CO)_4$ and its subsequent decomposition into $Ni$ and $CO$ forms the basis of the Mond process.$Ni + 4CO$ $\xrightarrow{T_1} Ni(CO)_4$ $\xrightarrow{T_2} Ni + 4CO$What are the values of $T_1$ and $T_2$?

Which method is used to obtain ultra-pure copper?

Match the elements in Column-$I$ with methods of purification in Column-$II$. Column-$I$ Column-$II$ $(a)$ Boron $(i)$ Van Arkel method $(b)$ Tin $(ii)$ Mond's process $(c)$ Zirconium $(iii)$ Liquation $(d)$ Nickel $(iv)$ Zone refining

For the electrolytic refining of aluminium (Hoopes' process),the three fused layers consist of: Bottom Layer Middle Layer Upper Layer

Vedclass Test Series

Exam Paper Generator

Online Exam Module

The formation of $Ni(CO)_4$ and its subsequent decomposition into $Ni$ and $CO$ forms the basis of the Mond process.
$Ni + 4CO$ $\xrightarrow{T_1} Ni(CO)_4$ $\xrightarrow{T_2} Ni + 4CO$
What are the values of $T_1$ and $T_2$?

Match the elements in Column-$I$ with methods of purification in Column-$II$.

Column-$I$ Column-$II$

$(a)$ Boron $(i)$ Van Arkel method

$(b)$ Tin $(ii)$ Mond's process

$(c)$ Zirconium $(iii)$ Liquation

$(d)$ Nickel $(iv)$ Zone refining

For the electrolytic refining of aluminium (Hoopes' process),the three fused layers consist of:

Bottom Layer Middle Layer Upper Layer