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प्रश्न
What is diamond? Of what substance is diamond made?
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उत्तर
Diamond, which is a colourless and transparent substance, is an allotrope of carbon. It is the hardest natural substance known. Diamonds are purely made of carbon and the symbol is C. When we burn diamond in oxygen, only carbon dioxide is evolved showing that diamond is made up of carbon.
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संबंधित प्रश्न
State the reason to explain why covalent compounds "have low melting and boiling points."
What would be the electron-dot structure of carbon dioxide which has the formula CO2?
Which inert gas electron configuration do the Cl atoms in Cl2 molecule resemble? What is this electron configuration?
Give one example of a molecule containing a double covalent bond
Draw the electron-dot structure of NH3 and state the type of bonding.
Describe the structure of graphite with the help of a labelled diagram.
What do you understand by polar covalent compounds?
Draw an electron dot diagram for the formation of the following. State the type of bonding present in them.
Hydroxyl ion
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methane
Explain the following briefly:
Cl2 is a non polar molecule, while HCl is a polar molecule.
The molecule which contains a triple covalent bond is ______.
An element L consists of molecules.
Why L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe the change undergone by L?
Draw an electron dot diagram to show the formation of the following compound.
Magnesium chloride [ H=1, C=6, Mg=12, Cl=17].
Draw the electron dot diagram and structure of nitrogen molecule.
Draw the electron dot diagram and structure of magnesium chloride.
Covalent bonds can be single, double or triple covalent bonds. How many electrons are shared in each? Give an example of each type.
Name the types of Hydrocarbons.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\phantom{......}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{..}\\ \phantom{.....}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C = C}\\\phantom{.....}|\phantom{.........}|\\ \phantom{.....}\ce{H}\phantom{........}\ce{H}\end{array}\] |
Which of the following statements are correct for carbon compounds?
- Most carbon compounds are good conductors of electricity.
- Most carbon compounds are poor conductors of electricity.
- Force of attraction between molecules of carbon compounds is not very strong.
- Force of attraction between molecules of carbon compounds is very strong.
