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Hydrocarbons

Short Answer Type

81.

What are petrochemicals?

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82.

Why is petroleum called liquid gold?

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83.

What does L.P.G. stand for?

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84.

What are gasoline additives?

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85.

What are the main constituents of LPG?

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86. What are alkanes and cycloalkanes ?

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87. Discuss the structures of alkanes.

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88.
In the alkane H₃C - CH₂ -C(CH₃)₂ -CH₂ - CH(CH₃)₂, identify 1°, 2°, 3° carbon atoms and give the H atoms bounded to each one of these.

Write the structure of the given compound in expanded form.

15H attached to five 1° carbons
4H attached to two 2° carbons
1H attached to one 3° carbon

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89.

Write structures of different chain isomers of butane (C₄H₁₀).

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90. In how many ways, you can join five carbon atoms and twelve hydrogen atoms of C₅H₁₂?

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Previous Year Papers

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Short Answer Type

88. In the alkane H3C - CH2 -C(CH3)2 -CH2 - CH(CH3)2, identify 1°, 2°, 3° carbon atoms and give the H atoms bounded to each one of these.

88.
In the alkane H₃C - CH₂ -C(CH₃)₂ -CH₂ - CH(CH₃)₂, identify 1°, 2°, 3° carbon atoms and give the H atoms bounded to each one of these.