Allotropes of carbon - class-VIII
Description: allotropes of carbon | |
Number of Questions: 15 | |
Created by: Shankara Prabhu | |
Tags: occurrence of carbon compounds in nature chemistry |
Wood charocal is used in gas masks because it:
In the preparation of wood charcoal, liquid pyroligneous acid is obtained. It consists of :
In a test tube, a cotton plug was placed and a few drops of bromine liquid were added to it and then a piece of wood charcoal was added to the test tube. Which of the following are observed?
$C _{12}H _{22}O _{11}\xrightarrow{Conc. H _2SO _4} 12C+11H _2O$
Which of the following is obtained by the above reaction?
When superheated steam is passed through white-hot wood charcoal, it gets reduced to a mixture of X and Y and it is named as Z. Identify the mixture Z.
When superheated steam is passed through white-hot wood charcoal, it gets reduced to a mixture of X and Y and it is named as Z. Identify Y
Bone charcoal is prepared by destructive distillation of bones.
Sugar charcoal is prepared by pouring water on sugar syrup.
When super heated steam is passed through white hot wood charcoal, it gets reduced to a mixture of $X, Y$ and this reaction is named as $Z$. Identify $X$.
In a test tube, a cotton plug was placed and a few drops of bromine liquid were added to it and then a piece of wood charcoal was added to the test tube. Which of the following are observed?
Process of conversion of wood into coal by biochemical process, taking over millions of years is called:
When super heated steam is passed through white hot wood charcoal, it gets reduced to a mixture of $X, Y$ and this reaction is named as $Z$. Identify $Y$.
When super heated steam is passed through red hot wood charcoal, it gets reduced to a mixture of $X$ and $Y$ and this mixture is named as $Z$. Identify the mixture $Z$.
${ C } _{ 12 }{ H } _{ 22 }{ O } _{ 11 }\xrightarrow { \quad \quad Conc.{ H } _{ 2 }S{ O } _{ 4 }\quad \quad } 12C+11{ H } _{ 2 }O$
Which of the following is obtained by the above reaction?
In the preparation of wood charcoal, liquid pyroligneous acid is obtained. It consists of: