Question 1

Chlorinated hydrocarbons have been used as insecticides.

Accepted Answer

A) True 
 B)False

Question 2

Which of the following statements about industrial grade ethanol and the ethanol used in alcoholic beverages is NOT correct?

Accepted Answer

A) Industrial grade ethanol is made by reacting ethylene with water, while ethanol used in beverages is made by fermentation. 
B) Industrial grade ethanol carries no federal excise tax, while ethanol used in beverages is taxed. 
C) Industrial grade ethanol and ethanol used in beverages have different molecular structures. 
D) Noxious substances are added to industrial grade ethanol so it is not safe to drink. 
A) Industrial grade ethanol is made by reacting ethylene with water, while ethanol used in beverages is made by fermentation. 
B) Industrial grade ethanol carries no federal excise tax, while ethanol used in beverages is taxed. 
C) Industrial grade ethanol and ethanol used in beverages have different molecular structures. 
D) Noxious substances are added to industrial grade ethanol so it is not safe to drink.

Question 3

Compounds related to the heterocyclics pyrimidine and purine are constituents of

Accepted Answer

A) amino acids. 
B) nucleic acids. 
C) proteins. 
D) plastics. 
A) amino acids. 
B) nucleic acids. 
C) proteins. 
D) plastics.

Question 4

The compound below is commonly known as

Accepted Answer

A) acetone. 
B) acetaldehyde. 
C) benzaldehyde. 
D) formaldehyde. 
A) acetone. 
B) acetaldehyde. 
C) benzaldehyde. 
D) formaldehyde.

Question 5

Rubbing alcohol contains

Accepted Answer

A) ethanol. 
B) isopropyl alcohol. 
C) n-propyl alcohol. 
D) methanol. 
A) ethanol. 
B) isopropyl alcohol. 
C) n-propyl alcohol. 
D) methanol.

Question 6

A compound that has the general formula CnH₂n will be an alkyne.

Accepted Answer

A) True 
 B)False

Question 7

Structurally,aldehydes are to ketones as carboxylic acids are to esters.Use the general formulas of these compounds to make sense of this comparison.

Accepted Answer

Aldehydes and ketones are both carbonyl

Question 8

Acetylene is

Accepted Answer

A) CH₄. 
B) C₂H₆. 
C) C₂H₄. 
D) C₂H₂. 
A) CH₄. 
B) C₂H₆. 
C) C₂H₄. 
D) C₂H₂.

Question 9

Why do many chlorinated hydrocarbons,like DDT and PCBs,become concentrated in the tissues of animals?

Accepted Answer

The answer of Why do many chlorinated hydrocarbons,like DDT and...

Question 10

The compounds CH₃CH₃ and CH₃CH₂CH₃ are

Accepted Answer

A) isomers. 
B) allotropes. 
C) isotopes. 
D) homologs. 
A) isomers. 
B) allotropes. 
C) isotopes. 
D) homologs.

Question 11

The compound below is a(n)

Accepted Answer

A) carboxylic acid. 
B) aldehyde. 
C) ketone. 
D) alcohol. 
A) carboxylic acid. 
B) aldehyde. 
C) ketone. 
D) alcohol.

Question 12

Glycerol is an alcohol with ________ hydroxyl groups

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 13

Many of the flavors isolated from foods are

Accepted Answer

A) carboxylic acids. 
B) esters. 
C) alcohols. 
D) ketones. 
A) carboxylic acids. 
B) esters. 
C) alcohols. 
D) ketones.

Question 14

The simplest aldehyde is

Accepted Answer

A) acetone. 
B) formaldehyde. 
C) propionaldehyde. 
D) methanol. 
A) acetone. 
B) formaldehyde. 
C) propionaldehyde. 
D) methanol.

Question 15

The formula for propyne is

Accepted Answer

A) C₃H₆. 
B) C₃H₄. 
C) C₃H₈. 
D) C₃H₃. 
A) C₃H₆. 
B) C₃H₄. 
C) C₃H₈. 
D) C₃H₃.

Question 16

Approximately what percentage of known compounds are classified as organic compounds?

Accepted Answer

A) ≈ 95% 
B) ≈ 70% 
C) ≈ 40% 
D) ≈ 20% 
A) ≈ 95% 
B) ≈ 70% 
C) ≈ 40% 
D) ≈ 20%

Question 17

The hydrocarbon that is used in torches along with oxygen to produce very hot flames for cutting and welding is

Accepted Answer

A) ethylene. 
B) methane. 
C) propane. 
D) acetylene. 
A) ethylene. 
B) methane. 
C) propane. 
D) acetylene.

Question 18

Benzene is an unsaturated hydrocarbon.Which of the following is NOT a property of benzene?

Accepted Answer

A) Benzene is a liquid at room temperature. 
B) Benzene undergoes the same reactions that other unsaturated hydrocarbons do. 
C) Benzene contains only carbon and hydrogen. 
D) Benzene has a ring of carbon atoms in its structure. 
A) Benzene is a liquid at room temperature. 
B) Benzene undergoes the same reactions that other unsaturated hydrocarbons do. 
C) Benzene contains only carbon and hydrogen. 
D) Benzene has a ring of carbon atoms in its structure.

Question 19

The compound below is a(n)

Accepted Answer

A) carboxylic acid. 
B) aldehyde. 
C) ketone. 
D) alcohol. 
A) carboxylic acid. 
B) aldehyde. 
C) ketone. 
D) alcohol.

Question 20

Which of the following is an alkene?

Accepted Answer

A) ethylene 
B) butyne 
C) cyclohexane 
D) xylene 
A) ethylene 
B) butyne 
C) cyclohexane 
D) xylene

Exam 9: Organic Chemistry

Chlorinated hydrocarbons have been used as insecticides.

Which of the following statements about industrial grade ethanol and the ethanol used in alcoholic beverages is NOT correct?

Compounds related to the heterocyclics pyrimidine and purine are constituents of

The compound below is commonly known as

Rubbing alcohol contains

A compound that has the general formula CnH₂n will be an alkyne.

Structurally,aldehydes are to ketones as carboxylic acids are to esters.Use the general formulas of these compounds to make sense of this comparison.

Acetylene is

Why do many chlorinated hydrocarbons,like DDT and PCBs,become concentrated in the tissues of animals?

The compounds CH₃CH₃ and CH₃CH₂CH₃ are

The compound below is a(n)

Glycerol is an alcohol with ________ hydroxyl groups

Many of the flavors isolated from foods are

The simplest aldehyde is

The formula for propyne is

Approximately what percentage of known compounds are classified as organic compounds?

The hydrocarbon that is used in torches along with oxygen to produce very hot flames for cutting and welding is

Benzene is an unsaturated hydrocarbon.Which of the following is NOT a property of benzene?

The compound below is a(n)

Which of the following is an alkene?

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