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प्रश्न
How does graphite act as a lubricant?
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उत्तर
Graphite has a hexagonal structure and weak van der Waals force between the layers of the carbon atoms in its crystal. Due to this weak force, the layers of carbon atoms in graphite can slide over one another, making graphite slippery in nature and capable of acting as a lubricant.
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संबंधित प्रश्न
Explain why carbon forms compounds mainly by covalent bond.
Give appropriate scientific reasons for Carbon tetrachloride does not conduct electricity.
Give two general properties of ionic compounds and two those of covalent compounds.
Give the formula of the compound that would be formed by the combination of the following pair of elements:
K and H
Which inert gas does the Cl atom in HCl resemble in electron arrangement?
Draw the electron-dot structure of CO2 compound and state the type of bonding.
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
Complete the following:
In case of non-polar covalent bond, the covalent bond is formed in the ______ of atoms and shared electrons are ______ distributed. (corner, middle, equally, unequally)
The following structural formula belongs to which carbon compound?
The electronic configuration of N2 is 2, 5. How many electrons in the outer shell of a N atom are not involved in the formation of a nitrogen molecule?
State the type of bond formed, and draw Lewis structure of water.
Element A has 2 electrons in its M shell. Element B has atomic number 7.
If the compound formed between A and B is melted and an electric current is passed through the molten compound, the element A will be obtained at the ______ and B at the ______ of the electrolytic cell.
Name a greenish-yellow gas which also bleaches.
Define the functional group and complete the following table.
| S.I. No. | Functional Group | Compound | Formula |
| (1) | ______________ | _______________ |
C2H5OH |
| (2) | _______________ | _______________ | CH3CHO |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\phantom{......}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{..}\\ \phantom{.....}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C = C}\\\phantom{.....}|\phantom{.........}|\\ \phantom{.....}\ce{H}\phantom{........}\ce{H}\end{array}\] |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Give an example for each of the following statement.
A compound in which three covalent bonds are formed.
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
