Organic Chemistry

Question 1

Which of the following alkanes is gas at room temperature?

A. Octane
B. Propane
C. Eicosane
D. Undecane

Answer 1

B. Propane

Question 2

The following reagents will produce an alkane from alkyl halide except

A. Zn/H+
B. Na/dry ether
C. Alcoholic KOH
d. All of these

Answer 2

C. Alcoholic KOH

Question 3

How many isomer does xylene have?

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

Answer 3

C. 3

Question 4

Which of the following is not an isomer of 2-hexene?

A. CH3CH2CH=CHCH2CH3
B. CH=CHCH2CH2CH2CH3
C. CH3CH2CH2CH=CHCH3
D. insert image (from Q24 of PCP questions)

Answer 4

C. CH3CH2CH2CH=CHCH3 (this is 2-hexene)

Question 5

Which of the following contains sp-hybridized carbon?

A. C4H8
B. C3H6
C. C5H8
D. C6H12

Answer 5

C. C5H8

Question 6

Part of a molecule where most of its chemical reactions occur?

A. Single covalent
B. Double covalent
C. Triple covalent
D. Functional group

Answer 6

D. Functional group

Question 7

How many possible monochlorinated product is expected from the chlorination of propane?

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

Answer 7

B. 2

Question 8

Reaction alcohol and carboxylic acid is known as

A. Saponification
B. Neutralization
C. Esterification
D. Epoxidation

Answer 8

C. Esterification

Question 9

The scent of banana is due to the ester

A. Ethyl formate
B. i-pentyl acetate
C. n-octyl acetate
D. Ethyl butyrate

Answer 9

B. i-pentyl acetate

Question 10

Addition of methyl magnesium bromide to acetaldehyde produces

A. Ethanol
B. 1-propanol
C. Methanol
D. 2-propanol

Answer 10

D. 2-propanol

Question 11

Mild oxidation of a secondary alcohol (with the —OH group on a carbon atom connected to two other carbon atoms) produces a/an

A. Aldehyde
B. Ester
C. Ether
D. Ketone

Answer 11

D. Ketone

Question 12

Which of the following alkynes contain acidic hydrogen?

A. 2-pentyne
B. 3-pentyne
C. 2-butyne
D. Propyne

Answer 12

D. Propyne

Question 13

Name one type of reaction that practically all organic compounds undergo

A. Halogenation
B. Hydration
C. Reduction
D. Combustion

Answer 13

D. Combustion

Question 14

What amide is the product of the reaction of CH3CO2H and CH3CH2NH2?

A. CH3CH2CONH2
B. CH3CONHCH3
C. CH3CONHCH2CH3
D. CH3CHCONH3

Answer 14

C. CH3CONHCH2CH3

Question 15

In the formula CH3CH2OCOCH3, which oxygen atom is double bonded?

A. CH3CH2(O)COCH3
B. CH3CH2OC(O)CH3

Answer 15

B. CH3CH2OC(O)CH3

Question 16

In which classes of compounds can R group(s) be a hydrogen atom?

A. Acids
B. Amides
C. Amines
D. All of the above
E. None of the above

Answer 16

D. All of the above