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प्रश्न
Why is graphite used for making dry cell electrodes but diamond is not?
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उत्तर
Graphite is a good conductor of electricity. Therefore, it is used for making dry cell electrodes. Whereas, diamond does not conduct electricity, as it has no free electrons and all its valence electrons go into the formation of strong covalent bonds.
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संबंधित प्रश्न
State the type of bonding in the following molecule.
Water
What type of bonds are present in methane (CH4) and sodium chloride (NaCl)?
What is the atomic number of carbon. Write its electronic configuration.
Draw the electron-dot structure of CO2 compound and state the type of bonding.
Draw the electron-dot structure of N2 and state the type of bonding.
Out of KCl, HCl, CCl4 and NaCl, the compounds which are not ionic are:
(a) KCl and HCl
(b) HCl and CCl4
(c) CCl4 and NaCl
(d) KCl and CCl4
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(a) oxygen and ethyne
(b) carbon dioxide and ammonia
(c) methane and ethene
(d) nitrogen and ethyne
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(a) CO2
(b) O2
(c) C2H4
(d) C2H2
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(a) What type of chemical bond is present in X?
(b) State whether X will have a high melting point or low melting point.
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(d) Will it dissolve in an organic solvent or not?
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(a) C4H10
(b) C5H12
(c) C3H8
(d) C6H14
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(a) lithium
(b) charcoal
(c) lead
(d) graphite
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| Group 'A' | Group 'B' |
| a. C2H6 | 1. Unsaturated hydrocarbon |
| b. C2H2 | 2. Molecular formula of an alcohol |
| c. CH4O | 3. Saturated hydrocarbon |
| d. C3H6 | 4. Triple bond |
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methanol
Draw an electron dot diagram to show the formation of the following compound.
Methane
Element A has 2 electrons in its M shell. Element B has atomic number 7.
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Write the names of the hydrocarbons for the following structural formula.
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| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
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