Free Fundamental Principles of Organic Chemistry MCQs with Answers

• A. 3
• B. 4
• C. 5
• D. 6

Explanation: This is the correct answer. Chain isomers have the same molecular formula but differ in the arrangement of their carbon atoms.For the…

• A. R-OH
• B. R-COX
• C. R-X
• D. R-COOH

Explanation: The functional group of acid halides is represented by R-COX, where:- R is an organic group (alkyl or aryl)- C is the carbon atom- O is…

• A. n-
• B. iso-
• C. neo-
• D. geminal-

Explanation: The prefix neo- refers to a substituent whose second-to-last carbon of the chain is trisubstituted (has three methyl groups attached to…

• A. Alcohols
• B. Thia-alcohols
• C. Thia-ether
• D. Nitrile

Explanation: The compounds containing the R-SH functional group are known as thio-alcohols.

• A. --CHO
• B. --COOH
• C. -CN
• D. -COOR

Explanation: In the -CN functional group, the carbon atom is sp hybridized. This means that the carbon atom in this group has two sigma bonds and no…

• A. KOCN
• B. C6H5OH
• C. CH3COOCH
• D. CH3OH

Explanation: Organic compound is any of a large class of chemical compounds in which one or more atoms of carbon are covalently linked to atoms of…

• A. sp3
• B. sp2
• C. sp
• D. sp3d

Explanation: The carbon atom in ethane forms 4 bonds with hydrogen atoms showing tetrahedral geometry. Hence exhibit sp3 hybridization.

• A. alicyclic and aromatic
• B. Open and branched chain
• C. Aromatic and non aromatic
• D. anti aromatic

Explanation: Homo cyolic organic compounds are sub divided into two types; * Alicyclic compounds.* Aromatic compounds.

• A. sp3
• B. sp
• C. sp2
• D. dsp

Explanation: In an alkane, each carbon atom has sp3 hybridization. This means that one 2s-orbital and three 2p-orbitals mix to create four hybrid…

• A. Alkane > Alkynes > Alkene
• B. Alkene> Alkane > Alkyne
• C. Alkyne >Alkene> Alkane
• D. Alkene> Alkyne> Alkane

Explanation: Option D is correct. Alkenes, with their one pi bond, are more reactive than both alkanes and alkynes.

• A. Benzene
• B. Butane
• C. 2-butyne
• D. 1-pentene

Explanation: The hybridization of carbon in organic compounds determines the arrangement of its electron orbitals and affects the geometry of the…

• A. 1955
• B. 1954
• C. 1956
• D. 1952
• E. 1992

Explanation: The discovery of natural gas in the Sui area of Balochistan in 1952 was a landmark event in Pakistan's history, initiating the development…

• A. Ammonium bicarbonate
• B. Ammonium nitrate
• C. Ammonium oxalate
• D. Ammonium cyanate
• E. Ammonium chloride

Explanation: Urea was synthesized by Friedrich Wöhler in 1828 using ammonium cyanate.

• A. Alicyclic and Aromatic
• B. Alkenes and alkynes
• C. Aromatic and Non aromatic
• D. Saturated and Unsaturated

Explanation: Alicyclic and aromatic compounds are both types of cyclic hydrocarbons but differ significantly in structure and properties.

• A. Option A: Ether
• B. Option B: Carboxylic acid
• C. Option C: Ketones
• D. Option D: Carbolic acid

Explanation: The correct answer is ketones, which have the general formula R2C=O. In this case, 'Rn' represents hydrocarbon groups that can vary in…

• A. Amino
• B. Carbonyl
• C. Carboxyl
• D. Formyl

Explanation: A functional group containing a carbon atom double-bonded to an oxygen atom (C=O). It is found in aldehydes, ketones, and carboxylic acids

• A. Kerosene
• B. Gasoline
• C. Gas oil
• D. Naphtha

Explanation: Gasoline) - Correct: Lead compounds were used in gasoline (petrol) to reduce knocking.

• A. 6.4 g
• B. 1.6 g
• C. 46 g
• D. 16 g

Explanation: Explanation for this question will be added soon!

• A. CH3CHO
• B. CH3CH2OH
• C. CH3CH3
• D. CH3CO2H

Explanation: Explanation for this question will be added soon!

• A. 6.02 x 1 023
• B. 16 x 10^23
• C. 1.6 x 10^23
• D. 6.02 x 1 022

Explanation: Explanation for this question will be added soon!