Question 1

What is the general molecular formula for alkanes?

Accepted Answer

C_nH_{2n+2}

Answer

C_nH_{n}

Answer

C_nH_{n-2}

Answer

C_nH_{2n-1}

Question 2

Which of the following is an example of an alkane?

Accepted Answer

Butane

Answer

Ethanol

Answer

Benzene

Answer

Acetic acid

Question 3

What type of bonding is present in alkanes?

Accepted Answer

Single covalent bonds

Answer

Double covalent bonds

Answer

Triple covalent bonds

Answer

Ionic bonds

Question 4

What is the main source of alkanes in nature?

Accepted Answer

Crude oil

Answer

Coal

Answer

Vegetable oil

Answer

Natural gas

Question 5

Which of the following alkanes has the highest boiling point?

Accepted Answer

Octane

Answer

Methane

Answer

Butane

Answer

Ethane

Question 6

What is the IUPAC name for the alkane with five carbon atoms?

Accepted Answer

Pentane

Answer

Propane

Answer

Hexane

Answer

Butane

Question 7

Which of the following statements about alkanes is true?

Accepted Answer

Alkanes are generally nonpolar molecules.

Answer

Alkanes are reactive due to multiple bonds.

Answer

Alkanes have a characteristic smell.

Answer

Alkanes can form hydrogen bonds with water.

Question 8

What reaction type do alkanes primarily undergo?

Accepted Answer

Combustion

Answer

Hydrolysis

Answer

Substitution

Answer

Addition

Question 9

How many hydrogen atoms are present in the alkane with six carbon atoms?

Accepted Answer

14

Answer

16

Answer

10

Answer

12

Question 10

What is the functional group present in all alkanes?

Accepted Answer

There is no functional group in alkanes.

Answer

Amino group

Answer

Alcohol group

Answer

Carboxyl group

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