Advertisements
Advertisements
प्रश्न
State how carbon occurs in the free state and in the combined state.
Advertisements
उत्तर
- Occurence of carbon : In free state – diamond, graphite, in impure form as coal.
- In combind state : CO2 in atmosphere, hydro-carbon as natural gas, petroleum, cellulose in wood and limestone CaCO3.
APPEARS IN
संबंधित प्रश्न
Choose the correct alternative
Lamp black is
Choose the correct alternative
The process by which decayed plants slowly convert into coal is called.
Give two uses for the following:
sugar charcoal
FILL IN THE BLANK
..................... is used as a pigment and colouring matter in ink and shoe polish.
Give the structural difference between saturated and unsaturated hydrocarbons with two examples each.
______ is the essential element in all the organic compounds.
Answer the following question.
Why are methane compounds have low melting and boiling points?
What is carbon monoxide? Why is it toxic?
Elemental carbon undergoes ______ reaction at room temperature.
A large family of fullerene exists, starting at ______ and ______ reaching up to.
