Free Fundamental Principles of Organic Chemistry MCQs with Answers

• A. Polar solvents
• B. Water
• C. Ammonium cyanate
• D. Non-polar solvents

Explanation: Organic compounds are soluble in non-polar solvent. A non-polar solute will be dissolved by a non-polar solvent because the two are…

• A. Divalent
• B. Monovalent
• C. Trivalent
• D. Tetravalent

Explanation: Option A: Divalent: Divalent atoms have two valence electrons in their outermost shell, such as oxygen or sulfur.Option B: Monovalent…

• A. Living things
• B. Non-living things
• C. Fossils
• D. Sea water

Explanation: Organic compounds typically consist of groups of carbon atoms covalently bonded to hydrogen, usually oxygen, and often other elements as…

• A. Glycol and cyclohexanol
• B. Formaldehyde and benzol
• C. Diethyl ether and ethyl alcohol
• D. Methanal and acetone

Explanation: Methanal is an aldehyde while acetone is a ketone. Both compounds have a similar structure as they contain a carbonyl group.

• A. Amino acids
• B. Ammonium carbonate
• C. Ammonium cyanate
• D. Xanthin

Explanation: Friedrich Wöhler prepared urea from ammonium cyanate, an inorganic compound.

• A. Alicyclic
• B. Aromatic
• C. Acyclic compounds
• D. Carbocyclic compounds

Explanation: Here are the definitions of each of the above terms: Alicyclic: contains one or more all-carbon rings which may be saturated or…

• A. 1900
• B. 1829
• C. 1850
• D. 1828

Explanation: In 1828, Wohler synthesized urea by slowly evaporating a water solution of ammonium cyanate, which he had prepared by adding silver…

• A. Class
• B. Group
• C. Homologous series
• D. None of these options is correct

Explanation: The compounds which belong to the same functional group form a homologous series.

• A. Urea
• B. Methane
• C. Carbon dioxide
• D. Coal

Explanation: Organic compounds of carbon are classified as organic when carbon is bound to hydrogen.

• A. Closed chain hydrocarbons
• B. Open chain hydrocarbons
• C. Ring compounds
• D. Alicyclic compounds

Explanation: Acyclic are open-chain hydrocarbons while cyclic compounds are closed-chained compounds.

• A. Carbonyl dichloride
• B. Phosphoryl chloride
• C. Carbon tetrachloride
• D. C2O & PH3

Explanation: a) Carbonyl dichloride:Phosgene is commonly known as carbonyl dichloride. Its chemical formula is COCl2.

• A. Alcohols
• B. Ketones
• C. Carboxylic Acid
• D. Ethers

Explanation: The general formula CnH2nO2 is for carboxylic acids and esters.

• A. RCOR
• B. RCOOR
• C. RCHO
• D. RCOOH

Explanation: The general formula for aldehydes is RCHO, where R represents an organic group.

• A. Functional groups
• B. Homologous series
• C. Alkane
• D. Atoms

Explanation: Functional groups are groups of atoms in a compound, that determine the chemical behavior of the compound and gives specific properties to…

• A. NH4CNO
• B. NH2COCH3
• C. NH2CONH2
• D. NH2COONH

Explanation: OPTION A: NH4CNO is not an amide because it contains a nitrogen atom bound to hydrogen, not to a carbonyl group (C=O).OPTION B: Amides are…

• A. Aldehyde
• B. Alcohol
• C. Esters
• D. Ketones

Explanation: d) Ketones This option is correct. While Camphor contains a ketone functional group, Menthone contains a ketone group, not a ketone.

• A. Functional groups
• B. Homologous series
• C. Alkane
• D. Atoms

Explanation: A functional group is an atom or a group of "atoms" that give specific physical and chemical properties to the organic compounds…

• A. 2
• B. 3
• C. 4
• D. 6

Explanation: Option A is correct as only 2 isomers are possible for Chloropropane. These structural isomers are 1- Chloropropane and 2- Chloropropane.

• A. 7
• B. 6
• C. 5
• D. 4

Explanation: Hexane (C6H14) has five possible isomers. The isomers are as follows;- Hexane, CH3CH2CH2CH2CH2CH3, a six carbon containing, saturated…

• A. 1 and 2
• B. 2 and 3
• C. 1 only
• D. All 1, 2 and 3

Explanation: The explanation for this question will be added soon.