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Calculate the octane number of gasoline fuel, which contains 25% n-heptane and 75% is iso-octane .

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Important Questions on Hydrocarbons

MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Define allotrope of an element with examples. 

 
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Which one is not an allotrope of carbon nanostructure?
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Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Which of the following is not an allotropic form of carbon-
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Graphite and Diamonds are two _____.
HARD
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Explain the structure of carbon nano-buds.
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y, and Z.
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Which of the following pairs have layer lattice structure in solid-state chemistry
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Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Allotropy is a property shown by which class of substances, elements, compounds mixtures? Give one example of allotropes of carbon.
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
The correct order of octane number is
HARD
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Write two points of difference in the structures of diamond and graphite.
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
State any two uses of diamond.
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
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'.
EASY
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
One of the following is not an allotrope of carbon. This is:
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Name the black substance of pencil. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit?
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Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
What is diamond? Of what substance is diamond made?
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Give any two differences between the properties of diamond and graphite. What causes these differences?
HARD
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
MEDIUM
Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
Why is graphite used for making dry cell electrodes but diamond is not?
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Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
How can diamonds be made artificially? How do synthetic diamonds differ from natural ones?
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Chemistry>Organic Chemistry>Hydrocarbons>Petroleum Products
State any two uses of graphite.