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प्रश्न
In which compound forms does carbon occur?
उत्तर
Carbon occurs in the following compounds:
- Hydrocarbons: These are organic compounds which are made up of carbon and hydrogen.
- CO2: Carbon also exists as carbon dioxide and occurs in the air in a free state. it is also found as a salt in chalk and limestone.
- Fossil fuel: coal, petroleum, natural gas.
- Carbonaceous nutrients: carbohydrates, proteins, fats.
- Natural fibres: cotton, wool, silk.
- CH4: Carbon also exists as methane.
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संबंधित प्रश्न
Name the element whose allotropic form is graphite.
State the term:
The property by which atoms of an element link together to form long chain or ring compounds.
Define the following:
Adsorption
Write the balanced chemical equations for the preparation of carbon dioxide by:
the action of dilute sulphuric acid on sodium bicarbonate.
Tick the most appropriate answer.
Carbon has a great affinity for
a. sulphur
b. nitrogen
c. oxygen
d. none of these
Carbon forms innumerable compounds by combining with other elements. True or false ?
What are hydrocarbons ? Name the two different forms of hydrocarbons.
Write the name and the chemical formula of the simplest alkene.
All the carbon bonds in a saturated hydrocarbon ______ electrons.
Draw the structures for ethanoic acid.
State in brief the transformation of vegetable matter to different types of coal varying in carbon content.
Select the appropeiate option of the following statement:
The type of coal with the highest carbon conent.
Complete the statement by filling the blank with the correct word from the option.
Adsorption capacity of wood charcoal is increased by passing ______ over wood charcoal, at high temperature.
Complete the statement by filling the blank with the correct word from the option.
Sodium oxide combines with carbon dioxide to give _____
Match the following.
| 1. | Alkyne | Bucky Ball |
| 2. | Andre Geim | Oxidation |
| 3. | C60 | Graphene |
| 4. | Thermocol | Triple bond |
| 5. | Combution | Polystyrene |
The portion left on dropping a hydrogen atom from an alkane is called ______.
Fossil fuels are obtained from
Which among the following compound is soluble in water?
A large family of fullerene exists, starting at ______ and ______ reaching up to.
Carbon monoxide enters the human body through ______.
