Free Master of Chemistry: Organic Chemistry Questions and Answers

Question 1

Which of the following organic compound members is the most basic?

Accepted Answer

Methane

Answer

Methane (CH4) is the simplest alkane and the most basic organic compound, consisting of one carbon atom bonded to four hydrogen atoms. It is the fundamental building block from which more complex organic molecules can be derived. The other options are more complex, containing additional atoms like oxygen or more carbon atoms.

Question 2

Which of the following is produced when phosphorus tri-iodide is used to cure ethylene glycol?

Accepted Answer

ethylene di-iodide

Answer

Ethylene glycol is a diol (HO-CH2-CH2-OH). When treated with phosphorus tri-iodide (PI3), the hydroxyl groups (-OH) are replaced by iodine atoms (-I). This reaction is a common method for converting alcohols to alkyl iodides, resulting in the formation of ethylene di-iodide (I-CH2-CH2-I).

Question 3

Organic molecules with the element _________ make up hydrocarbons.

Accepted Answer

Both hydrogen and carbon

Answer

The name 'hydrocarbon' itself indicates its composition: 'hydro' refers to hydrogen, and 'carbon' refers to carbon. Hydrocarbons are organic compounds composed solely of hydrogen and carbon atoms. They form the fundamental framework of many organic molecules, serving as the basis for other functionalized organic compounds.

Question 4

Which of the following bonds contains a sizable amount of different chemical compounds?

Accepted Answer

Covalent bond

Answer

Covalent bonds are formed by the sharing of electrons between atoms, primarily carbon, hydrogen, oxygen, nitrogen, and other nonmetals. This type of bonding is characteristic of organic chemistry, allowing carbon to form stable bonds with itself and other elements in diverse ways. This versatility leads to an immense variety of organic compounds with varying structures and properties.

Question 5

Which of the following describes an organic chemical classification?

Accepted Answer

alicyclic compounds and acyclic compounds

Answer

Organic compounds are broadly classified based on their carbon skeleton structure. Acyclic compounds (also known as open-chain or aliphatic compounds) have carbon atoms arranged in a linear or branched chain. Alicyclic compounds contain a ring of carbon atoms, but they behave more like aliphatic compounds than aromatic ones, representing fundamental structural classifications.

MChem Master of Chemistry Practice Test

MChem Master of Chemistry Practice Test

Free Master of Chemistry: Organic Chemistry Questions and Answers