Tag: occurrence of carbon compounds in nature

Quizzes (11) Questions (140)

Questions Related to occurrence of carbon compounds in nature

Multiple choice allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

Process of conversion of wood into coal by biochemical process, taking over millions of years is called:

  1. catenation

  2. carbonation

  3. pyrolysis

  4. destructive distillation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Process of conversion of wood into coal by biochemical process is known as Carbonization. Coal burns cleaner than wood burning coal was easier because coal burned longer than wood.

Carbonization is the term for the conversion of an organic substance into carbon or a carbon-containing residue through pyrolysis or destructive distillation. It is often used in organic chemistry with reference to the generation of coal gas and coal tar from raw coal.

Multiple choice allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

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 $Y$.

  1. $C{O} _{2}$
  2. $S{O} _{2}$
  3. ${H} _{2}$
  4. $N{O} _{2}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
$X + Y \longrightarrow CO + H _2(water-gas)$
$X = CO$
$Y = H _2$
$XY = water- gas (CO + H _2)$ reaction is exothermic.

$Z$ is known as $carbonisation$ reaction.
Hence, the correct option is C.

Multiple choice allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

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 $Z$.

  1. Producer gas

  2. Water gas

  3. Coal gas

  4. Soda water
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When super heated steam is passed through hot wood charcoal then reaction takes place as


$C + H _2O \rightarrow CO + H _2$

The combination of $CO$ and $H _2$ is known as water gas.

Multiple choice allotropes of carbon chemistry occurrence of carbon compounds in nature polymers

${ C } _{ 12 }{ H } _{ 22 }{ O } _{ 11 }\xrightarrow { \quad \quad Conc.{ H } _{ 2 }S{ O } _{ 4 }\quad \quad  } 12C+11{ H } _{ 2 }O$
Which of the following is obtained by the above reaction?

  1. Animal charcoal

  2. Sugar charcoal

  3. Coke

  4. Wood charcoal
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sugar when treated with con. $H _2SO _4$ it gives carbon as sugar charcoal and water.

${ C } _{ 12 }{ H } _{ 22 }{ O } _{ 11 }\xrightarrow { \quad \quad Conc.{ H } _{ 2 }S{ O } _{ 4 }\quad \quad  } 12C+11{ H } _{ 2 }O$