heating coal in plentiful supply of air
burning coal in air to produce water and carbon (IV) oxide
heating coal in the absence of air
heating coal in limited supply of air
separating coal into various allotropes of carbon
Correct answer is C
No explanation has been provided for this answer.
The boiling point of water is higher than the boiling point of ethanol because ...
What is the atomic number of Rubidium? ...
What process would coal undergo to give coal gas, coal tar, ammoniacal liquor and coke? ...
Which of the following substance is an ore of iron? ...
Which of the following methods is NOT used for the separation of mixtures? ...
The uncovered raw food that is sold along major roads is likely to contain some amounts of ...
Which of the following statements is true of sulphur (IV) oxide? ...
The diagram above represents an atom that can combine with chlorine to form ...