High School: 9th and 10th Grade - Chemistry - Crude Oil - Cracking Solution - MCQGeeks.com

Q.1.

The products of cracking are...

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alkane + alkene
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alkene + alkene
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alkane + alcohol
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alkane + alkane

Q.2.

Select from the list the correct formula for ethene.

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C3H6
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C2H4
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C2H6
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C4H2

Q.3.

An alkene molecule with one double bond contains 7 carbon atoms. How many hydrogen atoms does it contain?

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12
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14
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16
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15

Q.4.

In the cracking process...

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the hydrocarbon vapor is heated with iodine
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the hydrocarbon is mixed with hydrogen and heated
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the hydrocarbon vapor is passed over a hot catalyst
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the hydrocarbon is liquefied, then passed over a catalyst

Q.5.

The catalyst used in the cracking process in the lab is...

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powdered ceramic pot
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nickel
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platinum
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manganese

Q.6.

Cracking is an example of what type of chemical reaction?

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Reduction
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Oxidation
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Neutralisation
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Thermal decomposition

Q.7.

The alkene product of cracking...

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is an unsaturated compound
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has molecules in which each carbon atom has two bonds
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is unreactive
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will burn to produce carbon dioxide and hydrogen

Q.8.

What is the general formula for alkenes?

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CnH2n+2
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CnH2n+3
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CnHn+1
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CnH2n

Q.9.

Which of the following shows only the products that could be directly obtained by cracking C H ?

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Alkanes up to C20H44, hydrogen and ethene
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Alkanes up to C8H18, carbon dioxide and ethene
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Propene, poly(ethene) and hydrogen
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Alkanes up to C8H18, ethene and propene

Q.10.

The purpose of cracking is to...

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split long chain hydrocarbons into more useful short chain molecules
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split long chain hydrocarbons into their component molecules
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split hydrocarbons into carbon and hydrogen
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separate different sized hydrocarbons