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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
Choose the correct answer from the options given below:
Which of the following is a common characteristic of a covalent compound?
1) high melting point
2) consists of molecules
3) always soluble in water
4) Conducts electricity when it is in the molten state
Name the black substance of pencil. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit?
Name a carbon containing molecule which has two double bonds.
What type of bonds are present in water molecule? Draw the electron-dot structure of water (H2O).
Fill in the blank in the following sentence:
In forming N2 molecule, .............. electrons are shared by each atom of nitrogen.
What type of bond is present in oxygen molecule?
What type of bonding would you expect between Carbon and Chlorine?
State any two uses of diamond.
Define a covalent bond.
Explain the following term with example.
Homopolymer
Write answer as directed.
Saturated hydrocarbons are classified into three types. Write these names giving one example each.
The covalent bond in which the electrons are shared equally between the combining atoms.
Fill in the blank with correct word from the bracket.
Melting and boiling points of covalent compounds are generally ______ (low, high).
Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in?
Draw the electron dot diagram and structure of nitrogen molecule.
The molecular masses of a carbon compound spread over a range of _______.
The number of electrons in the valence shell of a carbon atom is 4.
The number of pi-bonds present in benzoic acid molecule are ______.
Explain dipole (polar) molecule by taking hydrogen chloride as an example.
