Advertisements
Advertisements
प्रश्न
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
Advertisements
उत्तर
carbon
Buckminsterfullerene is an allotropic form of the element carbon, and contains 60 carbon atoms joined in a spherical structure.
APPEARS IN
संबंधित प्रश्न
State the type of bonding in the following molecule.
Water
Why are most carbon compounds poor conductors of electricity?
Fill in the blank in the following sentence:
Two chlorine atoms combine to form a molecule. The bond between them is known as ..........
State one test by which sodium chloride can be distinguished from sugar.
What type of bonding would you expect between Carbon and Chlorine?
State one use of diamond which depends on its 'extraordinary brilliance' and one use of graphite which depends on its being 'black and quite soft'.
Molecular formula of Propane is C3H8 , write the structural formula of propane.
Give examples for the following:
Two solid covalent compounds.
Give examples for the following:
Two gaseous non polar compounds.
Draw an electron dot diagram to show the formation of the following compound.
Magnesium chloride [ H=1, C=6, Mg=12, Cl=17].
Covalent bonds can be single, double or triple covalent bonds. How many electrons are shared in each? Give an example of each type.
Taking MgCl2 as an electrovalent compound, CCl4 as a covalent compound, give four difference between electrovalent and covalent compounds
The number of electrons in the valence shell of a carbon atom is 4.
Your body is made up of carbon.
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.
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
`"CH"_3 - "CH"_2 - "OH" overset("Alkaline""KMnO"_4 + "Heat")(->) "CH"_3 - "COOH"`
In the above given reaction, alkaline KMnO4 acts as
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
Write notes on the characteristics of covalent compounds.
The number of single and double bonds present in a molecule of benzene (C6H6) respectively, are ______.
