Tag: covalent bonding in carbon compounds

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Questions Related to covalent bonding in carbon compounds

Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

The tetrahedral structure of carbon was proposed by__________.

Kekule
Wohler
Vant Hoff and Le-Bel
Berthlot

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Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

All allotropes of carbon exist in ___________ state at room temperature.

liquid
solid
gas
plasma

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Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

How many triple covalent bonds can a single carbon atom form at a time?

3
2
1.5
1

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Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

How many double covalent bonds can a single carbon atom form at a time?

1
2
3
4

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Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

The oxidation state of carbon in carbon monoxide is:

$+2$
$+4$
$+3$
$-4$

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Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

Which of the following is not a source of carbon?

limestone
dolomite
calcite
haemetite

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Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

Which symbol is used for the element carbon?

$C$
$Ca$
$Cn$
$Co$
$Cu$

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Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

Compound with maximum number of $\sigma$-bond:

$CH _3CH _2CH _3$
$CH _3OH$
$C _6H _6$
$C _6H _5CH _3$
$C _6H _5C _2H _5$

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Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

Carbon has zero oxidation number in

$CH _{4}$
$\mathrm { CH } _ { 3 } \mathrm { Cl}$
$C C l _ { 4 }$
$\mathrm { CH } _ { 2 } \mathrm { Cl } _ { 2 }$

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Multiple choice chemistry occurrence of carbon compounds in nature importance of carbon covalent bonding in carbon compounds carbon and its forms

Graphite melts at a high temperature of about:

$4236^oC$
$5326^oC$
$3527^oC$
$6326^oC$

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