mcqs of organic chemistry with answers

Organic Chemistry MCQs with Answers

In the initial academic examinations for the Army, Navy, and Pakistan Air Force, organic chemistry mcqs with answers are crucial. Whether they are in the Navy Education Branch, Navy Weapon Engineering Branch, Navy Supply Branch, Navy Operation Branch, or another branch, these multiple-choice questions are a great help to ambitious PN Cadets.

These organic chemistry multiple-choice questions (MCQs) cover the fundamentals of organic chemistry, ensuring cadets are ready for the demanding chemistry exams they will face in the defense forces. These organic chemistry questions are an essential tool for success because they are a useful means of assessing one’s comprehension and knowledge of organic chemistry subjects.

Organic Chemistry MCQ (Part-1)

  • An organic compound with a functional hydroxyl group (-OH) is called __________________. (Alcohol)
  • The functional group of aldehydes is the ______________ group. (Carbonyl)
  • A compound containing a functional carboxyl group (-COOH) is called __________________. (Carboxylic acid)
  • Amines are organic compounds that contain the functional group ______________. (Amino)
  • The functional group of ethers is __________________. (Ether)
  • The functional group of ketones is the ______________ group. (Carbonyl)
  • Organic compounds containing the functional group -CN are called ______________. (Nitriles)
  • The functional group of alkenes is __________________. (Double bond)
  • The functional group of alkynes is __________________. (Triple bond)
  • Esters are organic compounds that contain the functional group ______________. (Ester)
  • A compound with a thiol functional group (-SH) is called __________________. (Thiol)
  • Organic compounds containing the functional group -Cl are called __________________. (Chloroalkanes)
  • The functional group found in carboxylic acid derivatives such as esters and amides is the ______________ group. (Acyl)
  • A compound with a functional sulfhydryl group (-SH) attached to a carbon atom is called ______________. (Thiol)

Important Organic Chemistry MCQ with Answers

Important organic chemistry mcq with answers are very important for students who want to join the Pakistan Air Force (PAF). These organic chemistry multiple-choice questions offer a strong foundation in organic chemistry for those who aspire to be GD Pilots, PAF Aeronautical Engineering professionals, or members of the PAF Admin & Special Duty Branch, PAF Logistics Branch, or PAF Air Defence Branch.

Through the comprehensive coverage of the essential subjects and domains of organic chemistry, these multiple-choice questions provide candidates the edge they need to ace the chemistry exams they’ll face along the PAF route. These meticulously crafted questions are intended to evaluate candidates’ comprehension of organic chemistry concepts and ascertain their readiness for the forthcoming difficulties.

Organic Chemistry MCQ(Part-2)

  • Organic compounds that contain the functional group -CHO are called ______________. (Aldehydes)
  • In a nucleophilic substitution reaction, the nucleophile attacks and replaces the ______________ group. (Leaving)
  • The most common leaving group in organic chemistry is the ______________ ion. (Halides)
  • In an elimination reaction, a reactant loses two substituents to form a __________________ bond. (Double)
  • The most common base used in elimination reactions is __________________. (Strong base)
  • A reaction mechanism that involves the simultaneous formation of a new bond and the breaking of an existing bond is called __________________. (Combination)
  • In an addition reaction, two reactants combine to form a ______________ product. (Once)
  • The addition of hydrogen to an unsaturated hydrocarbon is called ______________________. (Hydrosis)
  • The reaction mechanism that involves the transfer of electrons from a reducing agent to an oxidizing agent is called ______________________. (Redox)
  • A reaction mechanism that involves the breaking of a bond and the formation of two new bonds is called __________________. (Breakage of a bond)
  • In an oxidation reaction, the reactant loses ______________________. (Electrons)
  • The loss of hydrogen from a compound is called __________________. (Dehydrogenation)

Organic Chemistry MCQ with Answers

Within the Army, organic chemistry mcq are very important for a number of exams and roles, such as the Technical Cadet Course, Army Education Officers, and Army EME Officers. These organic chemistry MCQs can also be helpful to civilians who want to enlist in the military. The fundamentals of organic chemistry covered in these multiple-choice questions are frequently seen in the chemistry assessments given during the application process.

Candidates can improve their comprehension of organic chemistry principles and improve their chances of passing the test and getting into the army by carefully practicing these multiple-choice questions (MCQs).

Organic Chemistry MCQ (Part-3)

  • Breaking a bond by adding a water molecule is called __________________. (Hydrolysis)
  • The reaction mechanism that involves the transfer of a proton from an acid to a base is called __________________. (Acid-base reaction)
  • A reaction mechanism that involves the breaking of a bond and the formation of a new bond with an adjacent atom is called __________________. (Rearrangement)
  • A reaction mechanism that proceeds through a series of discrete steps involving the formation and breaking of chemical bonds is called ______________. (Step by step)
  • A molecule that is not superimposed is called a ______________. (Chirality)
  • Chirality is a property related to a ______________ molecule. (Asymmetric)
  • A carbon atom bonded to four different substituents is called a __________________ carbon. (Chiral)
  • The two mirror images of a chiral molecule are called __________________. (Enantiomers)
  • Enantiomers have the same physical properties except for their ______________. (Optical activity)
  • The specific rotation of an enantiomer is determined by the ______________ of light. (Spin)
  • The notation R or S is used to describe the ______________ of a chiral center. (Configuration)
  • A molecule that has a chiral center and an internal plane of symmetry is called a _____________. (Intermediate compound)
  • Diastereomers are stereoisomers that are not ______________. (Mirror images)
  • The E/Z system is used to describe geometric isomers ______________. (Compound)
  • Geometric isomers have the same ______________ but differ in space. (Compound)
  • A molecule with a double bond that cannot rotate freely is called a ________. (Cis-trans isomer)
  • A racemic mixture is a 50:50 mixture of _________. (Enantiomers)
  • The separation of enantiomers into individual forms is called _____. (Resolution)
  • A mixture containing equal amounts of two enantiomers is called a ______ mixture. (Racemic)
  • The process of designing a series of reactions to change a starting material into a desired product is called ___________. (Synthesis technique)
  • In retrosynthesis, the starting material is broken down into simpler _________. (Predecessors)
  • The step in the synthesis plan where a functional group is changed into another functional group is called ________. (Conversion between functional groups)
  • Protecting groups are used to temporarily mask the _________ functional group during synthesis. (Reactive)
  • The most common protecting group for alcohols is _________. (TMS, Trimethylsilyl)
  • A multi-step synthesis involving the conversion of a functional group to an intermediate and then back to the original functional group is called a ________ synthesis. (Retrosynthetic)
  • The overall yield of a multi-step synthesis is determined by the yield of each step ______. (Single)
  • ________ synthesis involves the synthesis of a target molecule through a series of individual reactions. (Linear)
  • Using catalysts to speed up reactions and increase reaction rates is a common strategy in the synthesis of ________. (Organic)
  • One pot synthesis involves several reactions ________. (Simultaneous)
  • ________ synthesis strategy involves combining two fragments to form a larger molecule. (Fragment-based)

Basic Organic Chemistry MCQ with Answers

Organic chemistry is heavily emphasized in the academic exams taken by the Army, Navy, and Pakistan Air Force, so organic chemistry multiple-choice questions on this topic are a great resource. Numerous subjects are covered by these basic organic chemistry mcq with answers, including highly searched-for subjects like aromatic compounds, hydrocarbons, functional groups, and reaction processes.

These multiple-choice questions guarantee that applicants are well-prepared for the chemistry exams by including these crucial topics. These organic chemistry  multiple-choice questions provide a thorough review of organic chemistry for the Army, Navy, or PAF, allowing candidates to demonstrate their expertise and succeed academically.

Organic Chemistry MCQ (Part-4)

  • The functional group usually used to form a carbon-carbon bond in organic synthesis is the ______________ group. (Carbonyl)
  • The process of breaking a carbon-carbon bond to create two new carbon-carbon bonds is called ___________. (Breaking of a carbon-carbon bond)
  • Reaction conditions such as temperature, solvent and catalyst can greatly affect the synthesis of ________. (Efficiency)
  • Purification of the synthesized compound by methods such as distillation, recrystallization or chromatography is an important step in ________. (Product isolation)
  • ________ spectroscopy is used to study the interaction of molecules with electromagnetic radiation. (Spectroscopy)
  • ________ In spectroscopy, molecules absorb ultraviolet or visible light and undergo electronic transitions. (UV-Vis)
  • The region of the electromagnetic spectrum with wavelengths longer than visible light is called the ________ region. (Infrared)
  • Infrared spectroscopy is commonly used to detect ________, a group of organic molecules. (functional).
  • The range of fingerprints in the infrared spectrum is usually in the range of ________ cm-1. (1500-400)
  • ________ spectroscopy studies the interaction of molecules with radio frequency radiation. (Nuclear Magnetic Resonance)
  • NMR spectroscopy measures the _________ of protons or nuclei. (Magnetic Resonance)
  • The chemical shift of an NMR spectrum is measured in units of _____. (Parts per million, ppm)
  • The __________ rule states that the total number of π electrons in a molecule or ion must be even for an aromatic substance to appear. (Hückel)
  • ________ spectroscopy studies the interaction of molecules with microwaves. (Electron Paramagnetic Resonance)
  • Mass spectrometry is used to determine the _______ of molecules and ions. (Mass to charge ratio, m/z)
  • The main peak of the mass spectrum represents the abundance peak of ________. (Most)
  • The _____ effect of mass spectrometry results in the formation of positively charged ions from neutral molecules. (Electron ionization)
  • ________ spectroscopy is used to study the rotational and vibrational energy levels of molecules. (Raman)
  • The ___________ effect occurs when a substance scatters light, resulting in a change in frequency. (Raman)
  • Aromatic compounds are cyclic, planar and conjugated molecules with _______ stability. (Except)
  • The most common example of aromatic compounds is _________. (Benzene)
  • According to Hückel’s rule, an aromatic compound must have _________ number of π electrons. (4n + 2)
  • A compound meeting the criteria of aromaticity but with a closed shell structure is called ________. (Antiaromatic)
  • The presence of a ______ ring in a compound often gives the molecule an aromatic character. (Benzene)
  • Aromatic compounds undergo substitution reaction instead of ________ reaction. (Addition)
  • A compound containing a benzene ring fused to another ring is called a ________. (Polycyclic aromatic hydrocarbon)
  • ________ phenomenon refers to the stabilization of a molecule due to the transfer of π electrons in a conjugated system. (Resonance)
  • A compound with a non-aromatic conjugation system is called ________. (Non-aromatic)
  • The term ______ describes the ability of an atom to donate or remove electrons in a conjugated system. (Electronegativity)

Organic Chemistry Exam Questions and Answers

Organic Chemistry exam questions and answers are an extremely helpful resource for those getting ready for the Army, Navy, and Pakistan Air Force entrance exams. These well chosen multiple-choice questions address a wide range of subjects, including high search volume terms like isomerism, substitution processes, alkane, alkene, and alkyne.

These organic chemistry multiple-choice questions (MCQs) make sure candidates are prepared for the chemistry examinations that are administered during the selection process by including these crucial topics. These multiple-choice questions (MCQs) are an indispensable tool for anyone hoping to excel in their academic pursuits within the armed forces.

Organic Chemistry MCQ (Part-5)

  • A compound that contains a heteroatom such as nitrogen or oxygen in a conjugated system can have ________ aromaticity. (Heteroaromatic)
  • The ________ phenomenon occurs when an electron-donating group attaches to a benzene ring, increasing its electron density. (Activate)
  • Compounds containing a benzene ring with one or more substituents are called _________. (Substituted benzene)
  • ______________ compound is a cyclic conjugated system that is neither aromatic nor antiaromatic. (Non-aromatic)
  • Proton NMR spectra of aromatic compounds often have a characteristic ________. (Chemical Changes)
  • The IUPAC system is used to systematically determine the ________ of organic compounds. (Nomenclature)
  • The parent chain of an organic compound is the longest continuous chain that contains ______. (Important functional group)
  • In IUPAC nomenclature, the suffix “-ol” indicates a ____ functional group. (Alcohol)
  • The prefix “meth-” refers to the ________ carbon chain. (One)
  • The suffix “-oic acid” is used for carboxylic acids and “-al” for ________. (Aldehydes)
  • The prefix “iso-” is used to indicate the ______ branch of the carbon chain. (Secondary)
  • The presence of a double bond in an organic compound is indicated by the suffix “-ene” and ________ indicates a triple bond. (yne)
  • The substituent attached to the carbon chain is called _______. (Prefix)
  • The prefix “benz-” is used to indicate a substituent attached to the ______ ring. (Benzene)
  • The prefix “chloro-” refers to a substituent attached to a carbon atom by a _______ bond. (Chlorine)
  • Cyclic compounds use the prefix “cyclo-” before the name of the parent chain to indicate ______. (Ring)
  • A compound with a hydroxyl group (-OH) attached to a benzene ring is called a _______. (Phenol)
  • The “-amine” residue is used for compounds containing the _____ functional group. (Amino)
  • The prefix “tert-” is used to indicate the ______________ branch of the carbon chain. (Tertiary)
  • The prefix “methoxy-” is used to indicate a substituent attached to a carbon atom by a _____ group. (methox).

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