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प्रश्न
Name the hardest natural substance known.
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उत्तर
Diamond is the hardest natural substance known.
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संबंधित प्रश्न
Write the number of covalent bonds in the molecule of butane, C4H10.
Write any three features and give two examples of covalent compounds
What would be the electron-dot structure of carbon dioxide which has the formula CO2?
What is buckminsterfullerene?
Why is diamond used for making cutting tools (like glass cutters) but graphite is not?
State one test by which sodium chloride can be distinguished from sugar.
Write two points of difference in the structures of diamond and graphite.
One of the following compounds is not ionic in nature. This compound is:
(a) Lithium chloride
(b) Ammonium chloride
(c) Calcium chloride
(d) Carbon tetrachloride
What happens when methane (natural gas) burns in air? Write the chemical equation of the reaction involved.
State the type of bonding in the following molecule.
Hydroxyl ion
State the type of bonding in the following molecule.
Methane
Explain the following briefly:
Sodium chloride dissolves in water but carbon tetra chloride is insoluble in water.
Explain the following briefly.
Pure water does not conduct electricity, but on adding sodium chloride to it, it starts conducting electricity.
The particles present in strong electrolytes are
State the type of bonding in the following molecule.
Water
Draw the electron dot structure of covalent compound methane (non polar) and HCL (polar) and give two difference between them.
Your body is made up of carbon.
Which of the following is the purest form of carbon?
Write notes on the characteristics of covalent compounds.
