Hydrocarbons

Question 1

What are hydrocarbons?

Answer 1

Compounds made exclusively of hydrogen and carbon.

Question 2

What is the general formula for alkanes?

Answer 2

CnH2n+2.

Question 3

True or False: Alkenes are saturated hydrocarbons.

Answer 3

False.

Question 4

What type of bond do alkenes contain?

Answer 4

At least one double bond.

Question 5

Fill in the blank: The simplest alkene is _____.

Answer 5

Ethene.

Question 6

Which of the following is an example of an alkane? A) Ethene B) Propane C) Butene

Answer 6

B) Propane.

Question 7

What is the process of breaking down hydrocarbons called?

Answer 7

Cracking.

Question 8

What is the main use of hydrocarbons?

Answer 8

As fuels and raw materials in the chemical industry.

Question 9

What is the general formula for alkenes?

Answer 9

CnH2n.

Question 10

True or False: Methane is a three-carbon alkane.

Answer 10

False.

Question 11

What is the name of the hydrocarbon with the formula C4H10?

Answer 11

Butane.

Question 12

What type of reaction do alkenes typically undergo?

Answer 12

Addition reactions.

Question 13

Which hydrocarbon is used in the production of plastics?

Answer 13

Ethene.

Question 14

Fill in the blank: The process of combustion of hydrocarbons produces _____.

Answer 14

Carbon dioxide and water.

Question 15

What is the state of most alkanes at room temperature?

Answer 15

Gas or liquid.

Question 16

What is the name of the longest chain alkane with 7 carbons?

Answer 16

Heptane.

Question 17

True or False: Alkanes are more reactive than alkenes.

Answer 17

False.

Question 18

What type of bond is present in alkynes?

Answer 18

Triple bond.

Question 19

Which of the following hydrocarbons is unsaturated? A) Ethane B) Ethene C) Octane

Answer 19

B) Ethene.

Question 20

What is the term for the structural formula representation of hydrocarbons?

Answer 20

Displayed formula.

Question 21

Fill in the blank: The process of hydrogenation converts alkenes into _____ by adding hydrogen.

Answer 21

Alkanes.

Question 22

What is the main environmental concern regarding the combustion of hydrocarbons?

Answer 22

Production of greenhouse gases.

Question 23

What is the boiling point trend of alkanes as the number of carbon atoms increases?

Answer 23

Boiling point increases.

Question 24

True or False: Cycloalkanes are a type of alkane that forms a ring structure.

Answer 24

True.

Question 25

What is the formula for octane?

Answer 25

C8H18.

Question 26

Which hydrocarbon is known as the primary component of natural gas?

Answer 26

Methane.

Question 27

Fill in the blank: The process of fractional distillation is used to separate _____ based on their boiling points.

Answer 27

Hydrocarbons.

Question 28

What are isomers?

Answer 28

Compounds with the same molecular formula but different structural formulas.

Question 29

Which of the following is a property of hydrocarbons? A) High polarity B) Low density C) High solubility in water

Answer 29

B) Low density.

Question 30

What is the main product of complete combustion of hydrocarbons?

Answer 30

Carbon dioxide.

Question 31

True or False: Hydrocarbons can only be found in fossil fuels.

Answer 31

False.

Question 32

What is the name of the reaction where alkenes react with bromine?

Answer 32

Halogenation.