Question 1

The chemical formula of cyclopropane is

Accepted Answer

A) C₃H₃. 
B) C₃H₆. 
C) C₃H₇. 
D) C₃H₈. 
A) C₃H₃. 
B) C₃H₆. 
C) C₃H₇. 
D) C₃H₈.

Question 2

Carbon is almost always

Accepted Answer

A) monovalent. 
B) divalent. 
C) trivalent. 
D) tetravalent. 
A) monovalent. 
B) divalent. 
C) trivalent. 
D) tetravalent.

Question 3

The most important commercial organic compound is

Accepted Answer

A) methane, CH₄. 
B) ethane, CH₃CH₃. 
C) ethylene, CH₂   CH₂. 
D) propane, CH₃CH₂CH₃. 
A) methane, CH₄. 
B) ethane, CH₃CH₃. 
C) ethylene, CH₂   CH₂. 
D) propane, CH₃CH₂CH₃.

Question 4

An example of a molecular formula of an alkene is

Accepted Answer

A) C₇H₁₆. 
B) C₅H₁₀. 
C) C₅H₈. 
D) C₆H₆. 
A) C₇H₁₆. 
B) C₅H₁₀. 
C) C₅H₈. 
D) C₆H₆.

Question 5

A compound that contains only carbon and hydrogen is a(n)

Accepted Answer

A) alcohol. 
B) carbohydrate. 
C) homolog. 
D) hydrocarbon. 
A) alcohol. 
B) carbohydrate. 
C) homolog. 
D) hydrocarbon.

Question 6

There are many isomeric amines with the formula C₄H₇N.Draw and name three isomers.

Accepted Answer

Sure! Three isomeric amines wi

Question 7

Which of the following compounds is saturated?

Accepted Answer

A) pentene 
B) ethane 
C) butyne 
D) pentadiene 
A) pentene 
B) ethane 
C) butyne 
D) pentadiene

Question 8

Which of the following is a heterocyclic compound?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 9

The simplest carboxylic acid is commonly known as

Accepted Answer

A) ethanoic acid. 
B) butyric acid. 
C) methanoic acid. 
D) propionicacid. 
A) ethanoic acid. 
B) butyric acid. 
C) methanoic acid. 
D) propionicacid.

Question 10

What is the general formula for a cycloalkane?

Accepted Answer

A) CnHn 
B) CnH₂n₊₂ 
C) CnH₂n₋₂ 
D) CnH₂n 
A) CnHn 
B) CnH₂n₊₂ 
C) CnH₂n₋₂ 
D) CnH₂n

Question 11

Which of the following is an alkyne?

Accepted Answer

A) ethylene 
B) hexyne 
C) heptane 
D) benzene 
A) ethylene 
B) hexyne 
C) heptane 
D) benzene

Question 12

What feature of carbon is probably most responsible for the fact that 95% of all compounds contain carbon? Discuss your answer briefly.

Accepted Answer

the abilit

Question 13

Phenol,sometimes called carbolic acid,was the first

Accepted Answer

A) anesthetic. 
B) antiseptic. 
C) insecticide. 
D) analgesic. 
A) anesthetic. 
B) antiseptic. 
C) insecticide. 
D) analgesic.

Question 14

The element whose atoms have a unique ability to bond to each other and to other kinds of atoms is

Accepted Answer

A) sodium. 
B) carbon. 
C) sulfur. 
D) nitrogen. 
A) sodium. 
B) carbon. 
C) sulfur. 
D) nitrogen.

Question 15

How many different structural isomers are there for a hydrocarbon with the formula C₅H₁₂?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 16

An emollient is a

Accepted Answer

A) skin softener. 
B) sun screen. 
C) laxative. 
D) detergent. 
A) skin softener. 
B) sun screen. 
C) laxative. 
D) detergent.

Question 17

Which of the following alkanes will have the lowest boiling point?

Accepted Answer

A) CH₄ 
B) C₃H₈ 
C) C₁₄H₃₀ 
D) C₂₂H₄₆ 
A) CH₄ 
B) C₃H₈ 
C) C₁₄H₃₀ 
D) C₂₂H₄₆

Question 18

A molecular formula of an aromatic hydrocarbon is

Accepted Answer

A) C₁₀H₁₈. 
B) C₈H₁₆. 
C) C₇H₁₀. 
D) C₆H₆. 
A) C₁₀H₁₈. 
B) C₈H₁₆. 
C) C₇H₁₀. 
D) C₆H₆.

Question 19

Vinegar is a solution of ________ in water.

Accepted Answer

A) acetic acid 
B) butyric acid 
C) formic acid 
D) propionic acid 
A) acetic acid 
B) butyric acid 
C) formic acid 
D) propionic acid

Question 20

C₄H₈ is an alkene.

Accepted Answer

A) True 
 B)False

Exam 9: Organic Chemistry

The chemical formula of cyclopropane is

Carbon is almost always

The most important commercial organic compound is

An example of a molecular formula of an alkene is

A compound that contains only carbon and hydrogen is a(n)

There are many isomeric amines with the formula C₄H₇N.Draw and name three isomers.

Which of the following compounds is saturated?

Which of the following is a heterocyclic compound?

The simplest carboxylic acid is commonly known as

What is the general formula for a cycloalkane?

Which of the following is an alkyne?

What feature of carbon is probably most responsible for the fact that 95% of all compounds contain carbon? Discuss your answer briefly.

Phenol,sometimes called carbolic acid,was the first

The element whose atoms have a unique ability to bond to each other and to other kinds of atoms is

How many different structural isomers are there for a hydrocarbon with the formula C₅H₁₂?

An emollient is a

Which of the following alkanes will have the lowest boiling point?

A molecular formula of an aromatic hydrocarbon is

Vinegar is a solution of ________ in water.

C₄H₈ is an alkene.

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