2. Answer the following questions
a. Why are carbon and its compounds
used as fuels?
b. In which compound forms does
carbon occur?
c. Write the uses of diamond.
1:con
Answers
Answer:
a. Carbon compounds are used as fuel because they burn with a clean flame and no smoke is produced. ... Carbon and their compounds give out a lot of heat, energy and light when they are burnt in air and this is mainly because carbon compounds have greater calorific values.
b. Carbon also exists in its many allotropic forms such as graphite, diamond, buckminsterfullerene, etc. However, carbon mostly occurs as a tetravalent compound in nature in the form of hydrocarbons. Additional Information: The most abundant element (by mass) found in nature is hydrogen, followed by helium and oxygen.
c. (1)Diamond is used in rock drilling and glass cutting machine.
(2) Diamond knives are used in eye surgery.
(3) Diamond is used in ornaments.
(4) Diamond dust is used to cut other diamonds.
(5) Diamond is use to make windows in artificial satellite to protect from radiation.
Explanation:
Question
a. Why are carbon and its compounds
used as fuels?
b. In which compound forms does
carbon occur?
c. Write the uses of diamond.
Answer
a. Carbon and its compounds are used as fuels because most of the carbon compounds produce lot of heat and energy when burnt in air i.e. they have high calorific value.
b. Carbon occurs in the following compounds:
Hydrocarbons: These are organic compounds which are made up of carbon and hydrogen.
CO2: Carbon also exisits as carbon dioxide and occurs in the air in free state. it is also found as a salt in chalk and limestone. It is given out during combustion of wood, fossil fuel etc.
- CH4: Carbon also exists as methane.
c. Uses of diamonds are as follows:
- used in ornaments
- used in glass cutting and rock drilling machines
- diamond dust is used for polishing other diamonds
- diamond is used to make windows giving protection from radiation in space and in artificial satellites
- diamond knives are used in eye surgery