CARBON AND ITS COMPOUNDS
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Carbon Properties |
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01. |
What
are the two
properties of Carbon
which lead to the huge
number of Carbon compounds
we see around us ? |
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02. |
Carbon(Group 14) element in the periodic table is known
to form compounds with many
elements. Write an example of a compound formed with a.Chlorine (Group 17 of periodic table) b.Oxygen (Group 16 of periodic table) |
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03. |
Carbon can neither form C4+ cation nor C4- anions. Why ? |
2023 |
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04. |
Give reason why carbon can neither form C4+ cations
nor C4- anions but form covalent compounds. |
2024 |
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05. |
List
two properties by virtue of which carbon
form a large
number of compounds. |
2024 |
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06. |
State reasons why 1.Carbon forms strong bonds and stable compounds with most other elements 2.The melting and boiling points of covalent compounds are low. |
2023 |
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07. |
Carbon compounds have
low melting and
boiling points ? |
2022 |
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08. |
“Carbon prefers to share its valence electrons with other atoms
of carbon or with atoms of other elements rather
than gaining or losing the valence electrons in order to attain noble
gas configuration.” Give
reason to justify this statement. |
2022 |
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09. |
State the reason
why a)
Carbon compounds have low melting and boiling points. b) Carbon compounds do
not conduct electricity c) Carbon can form only covalent compounds. |
2022 |
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10. |
‘Two different forms of carbon – diamond and graphite have
different structures and very different physical properties even
though their chemical properties are same.” Explain
why |
2022 |
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11. |
State the reasons, why carbon cannot (i)
Lose four electrons to form C4+ cations (ii)
Gain four electrons
to form C4- anions. |
2022 |
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How does carbon overcome this problem to form compounds ? |
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12. |
Write the name of an allotrope of carbon. |
2021 |
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13. |
‘Carbon forms strong
bond with most other elements making the compounds exceptionally stable.” Give reason to justify this statement. |
2021 |
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14. |
The table
shows the electronic structure of four elements. a.Identify which
element(s) will form
covalent bond with
carbon. b.“Carbon reacts with an element in the above
table to form
several compounds.” Give suitable reasons. |
2022 SP |
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15. |
List two properties of carbon which lead
to the huge
number of carbon compounds we see around us,
giving reason for each. |
2019 |
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16. |
a.State the reason why carbon can neither form C4+ cations
nor C4- anions, but forms
covalent bonds. Also
state reasons to explain why covalent compounds i.Are bad
conductors of electricity ii.Have low melting and boiling points. |
2019 |
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17. |
Give
reason why carbon can neither form C4+ cations nor C4- anions, but forms covalent compounds which are bad conductor of electricity and have low melting and boiling points ? |
2017 |
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18. |
Expalin, giving
reason, why carbon
neither forms C4+ cations nor C4- anions, but forms
covalent compounds which
are bad conductor of electricity and have low melting and boiling point. |
2017 |
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19. |
Explain the reason why
carbon forms compounds mainly by covalent bonds. State two main reasons responsible for carbon making a
large number of compounds. Also explain why compounds formed by carbon with
most other elements are exceptionally stable. |
2017 |
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20. |
a.State two main
reasons for carbon
forming a very
large number of compounds. b.Give reason
why carbon forms compounds. i. Namely by covalent bonding ii.Have low melting and boiling points. |
2017 SP |
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Catenation |
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01. |
Catenation is the
ability of an atom to form bonds
with other atoms
of the same element. It is
exhibited by both carbon and silicon. Compare the ability of catenation of
the two elements. Give reasons. |
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02. |
Carbon, a member
of group 14, forms a large number
of carbon compounds estimated to be about three
million. Why is this property not exhibited by other elements of this group
? Explain |
2020 |
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03. |
State any two reasons for carbon forming a large number of compounds. Why does carbon form compounds i.Mainly by covalent
bonding ii.Having low melting and
boiling points. |
2020 |
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04. |
Why does carbon
show catenation to maximum
extent ? List two reasons. |
2020 |
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05. |
The
number of carbon
compounds is more than those
formed by all other
elements put together. Justify this statement by giving two reasons. |
2021 SP |
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06. |
Define Catenation. |
2020 SP |
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Tetravalency |
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01. |
Carbon has four electorn in its valence shell. Which type
of compound can be
formed by carbon and why ? Give any one example of such compound. |
2018 |
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