chemistry hydrocarbon mcqs

Chemistry Hydrocarbon MCQs

Hydrocarbon MCQs with Answers in Chemistry

For those getting ready for the basic academic exams in the Army, Navy, and Pakistan Air Force, hydrocarbons mcqs with answers are a great resource. The evaluation of knowledge and comprehension of hydrocarbon MCQ concepts—which are fundamental to the chemistry tests administered to the armed forces—is largely dependent on these multiple-choice questions.

The thorough treatment of key themes in these hydrocarbons MCQs (multiple-choice questions) guarantees that applicants are well-prepared for their academic path in the defense forces, whether of their aspiration to become PN Cadets, members of the Navy Operation Branch, Navy Supply Branch, or Navy Ordnance Branch.

Hydrocarbon MCQs (Part-1)

  • Alkanes are hydrocarbons that consist only of ________ and __________ atoms. (Carbon, Hydrogen)
  • The general formula of alkanes is __________. (CnH2n+2)The simplest alkane is ________. (Methane)
  • Alkanes are classified as ______________ hydrocarbons because they contain only single covalent bonds. (saturated)
  • The breaking down of large hydrocarbons into smaller ones by heating is called ______. (cracking)
  • Alkanes have ______ isomers where the carbon atoms are arranged differently in the carbon chain. (Structural)
  • The prefix “sed-” in the system name “butane” indicates a _________ carbon chain. (Four)
  • The suffix “-ane” is used in IUPAC nomenclature to indicate ______________ compounds. (Alkane)
  • Alkanes undergo a _______ reaction with halogens in which one or more hydrogen atoms are replaced by halogen atoms. (Halogenation)
  • Burning of alkanes produces _________ and _________ primary products. (Carbon dioxide, water)
  • Alkanes generally have _______ boiling points as the molecular size increases. (Addition)
  • The process of converting alkanes into alkenes by breaking a C-C single bond and forming a C=C double bond is called ______. (Dehydrogenation)
  • Alkanes are relatively ______________ because they have weak intermolecular forces and lack functional groups. (Nonpolar)

MCQs on Hydrocarbon are very helpful for students who want to work for the Pakistan Air Force (PAF) in their academic exams. These multiple-choice questions provide a strong foundation in hydrocarbon 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.

These hydrocarbons multiple-choice questions (MCQs) address key topics related to hydrocarbon compounds, including alkanes, alkenes, and alkynes, to guarantee that candidates are ready for the chemistry exams they will face in the PAF.

Hydrocarbon MCQ (Part-1)

  • The systematic name of an alkane with six carbon atoms is ________. (Hexane)
  • Alkanes can be used in _______ due to their low reactivity and high energy content. (Fuels)
  • Alkenes are hydrocarbons that contain at least one ______ bond. (Carbon-carbon doublet)
  • The general formula for alkenes is ________. (CnH2n)
  • The simplest alkene is _______. (Ethylene)
  • Alkenes are classified as ________ hydrocarbons because they contain double bonds. (unsaturated)
  • The presence of a double bond in alkenes allows ________ isomerism, where different arrangements of atoms around the double bond are possible. (Geometric/Cis-trans)
  • The residue “-ene” is used in IUPAC nomenclature to indicate a _____ compound. (Alkene)
  • The prefix “prop-” in the system name “propene” refers to a _______ carbon chain. (Three)
  • Alkenes undergo a ________ reaction in which atoms or groups are added to the carbon-carbon double bond. (Addition)
  • The addition of hydrogen to an alkene is called _________. (Hydrate)
  • Alkenes can undergo _______ reactions with halogens, breaking the double bond and adding halogen atoms. (Halogenation)
  • Alkenes can be converted to alcohols in ______ reactions where water is added across the double bond. (Hydrate)

Important MCQs on Hydrocarbon with Answers

Important MCQs on Hydrocarbon are very important in the Army for a variety of roles and assessments, such as the Technical Cadet Course, Army Education Officers, and Army EME Officers. Numerous hydrocarbon-related subjects are covered in these Hydrocarbons multiple-choice questions, such as isomerism, functional groups, and hydrocarbon reactions.

People can improve their comprehension of hydrocarbon ideas and their performance on the chemistry examinations given during the selection process by practicing these multiple-choice questions.

Hydrocarbon MCQs (Part-3)

  • The process by which alkenes are converted to alkanes by adding hydrogen through a double bond is called ______________. (Hydrogenation)
  • Alkenes can undergo a __________________ reaction in which the double bond is broken and two alkyl groups are added to the carbon. (Hydroboration-Oxidation)
  • Alkenes are usually ______________ than alkanes of similar molecular weight. (More reactive)
  • The systematic name of an alkene with five carbon atoms is __________________. (Pentene)
  • Alkynes are hydrocarbons that contain at least one ______________ bond. (Carbon-carbon triplet)
  • The general formula of alkynes is _____. (CnH2n-2)
  • The simplest alkyne is _______. (Ethylene/Acetylene)
  • Alkynes are classified as ________ hydrocarbons because they contain triple bonds. (unsaturated)
  • The presence of a triple bond in alkynes allows ______ isomerism, where different arrangements of atoms around the triple bond are possible. (Geometric/Cis-trans)
  • The residue “-yne” is used in IUPAC nomenclature to indicate a _____ compound. (Alkyne)
  • The prefix “sed-” in the system name “butyne” means ______ carbon chain. (Four)
  • Alkynes undergo a _________ reaction in which atoms or groups are added to the carbon-carbon triple bond. (Addition)
  • The addition of hydrogen to an alkyne is called _______. (Hydrate)
  • Alkynes can undergo ______________ reactions with halogens, breaking the triple bond and adding halogen atoms. (Halogenation)
  • Alkynes can be converted to alkenes in ________ reactions where the triple bond is broken and two hydrogen atoms are added. (Hydrosis)
  • The process of converting alkynes to aldehydes or ketones by partial oxidation is called ________. (Oxidative Cleavage)
  • Alkynes can undergo ________ reactions where the triple bond is broken and two alkyl groups are added to the carbon. (Hydroboration-Oxidation)
  • Alkynes are generally ______ than alkanes and alkenes of similar molecular weight. (More reactive)
  • The systematic name of an alkyne with six carbon atoms is _______. (Hexylene)
  • Aromatic compounds contain a _________ ring or other aromatic systems. (Benzene)
  • The word “aromatic” originated from the sweet smell of some early ______ compounds. (Aromatic)
  • Aromatic compounds are characterized by a cyclic structure with a _______ delocalized electron. (Spruce)
  • The systematic name of an aromatic compound with a benzene ring is _______. (Benzene)
  • Aromatic compounds undergo a _______ reaction in which electrophiles replace a hydrogen atom in the benzene ring. (Electrophilic aromatic substitution)
  • The presence of a _________ group on the benzene ring increases the electron density, making it more reactive to electrophiles. (Electron donation)
  • The presence of the ______ group in the benzene ring reduces the electron density, making it less reactive to electrophiles. (Electron withdrawal)
  • Aromatic compounds have ________ isomers where the substituents can be in different positions in the ring. (Arrangement)
  • The systematic name of a compound with a benzene ring and a methyl group in the ortho position is ________. (Ortho-methylbenzene)
  • Aromatic compounds can undergo a ________ reaction in which two benzene rings are fused. (Ring Fusion)

Hydrocarbon MCQs (Multiple Choice Questions) and Answers

Hydrocarbon MCQs chemistry is heavily emphasized in the academic exams given by the Army, Navy, and Pakistan Air Force, hence multiple-choice questions on this topic are an invaluable tool. A wide range of hydrocarbon-related subjects are covered in these multiple-choice questions, such as halogenation, combustion, cracking, and hydrocarbon derivatives.

These hydrocarbon  MCQs (multiple-choice questions) and answers make sure applicants are ready for the defense forces’ chemistry tests by covering these crucial topics. These hydrocarbon MCQs (multiple-choice) questions cover hydrocarbon topics in great detail, allowing applicants to show off their expertise and succeed academically in both the Army Navy and PAF.

Hydrocarbon MCQs (Part-4)

  • Aromatic compounds can be used in _________ because of their stable structure and unique properties. (Solvents)
  • ________ effect refers to stabilization of aromatic compounds due to silicon electron transfer. (Aromatic)
  • Aromatic compounds can undergo _______ reactions in which a substituent is added to the benzene ring in the presence of a catalyst. (Friedel-Crafts)
  • The systematic name for a compound with a benzene ring and a nitro group in the meta position is _________. (Meta-nitrobenzene)
  • Aromatic compounds are important in _____ chemistry and can be used in medicines, dyes and polymers. (Organic)
  • Hydrocarbons go through _________ reactions in which oxygen is added to produce carbon dioxide and water. (Combustion)
  • In the presence of a catalyst, hydrocarbons can undergo a _____ reaction in which carbon-carbon bonds are broken and smaller molecules are formed. (cracking)
  • Hydrocarbons can undergo __________ reactions with halogens, where hydrogen atoms are replaced by halogen atoms. (Halogenation)
  • ________ reactions involve the addition of water through a double or triple bond in a hydrocarbon. (Liquification).
  • ________ reactions involve the addition of hydrogen through a hydrocarbon double or triple bond. (Condensation)
  • Hydrocarbons can undergo _______ reactions with strong acids, producing ions and forming new compounds. (Acid)
  • The reaction of an alkane with chlorine under ultraviolet light is an example of ______. (Free Radical Halogenation)
  • The reaction of an alkene with bromine in a nonpolar solvent is an example of __________. (Electrophilic addition)
  • The reaction of an alkyne with water in the presence of a strong acid is an example of ________. (Acid catalyzed hydration)
  • The reaction of an alkene with hydrogen gas in the presence of a metal catalyst is an example of __________. (Catalytic hydrogenation)
  • The reaction of an alkane with sulfuric acid to produce an alkyl bisulfate is an example of ______. (Sulfonation)
  • The reaction of an alkene with ozone followed by reduction is an example of ________. (Osonolysis)
  • Hydrocarbons undergo ________ reactions where oxygen is added and carbon dioxide and water are produced. (Combustion)
  • In the presence of a catalyst, hydrocarbons can undergo a _______ reaction in which carbon-carbon bonds are broken and smaller molecules are formed. (cracking)
  • Hydrocarbons can undergo _____ reactions with halogens in which hydrogen atoms are replaced by halogen atoms. (Halogenation)
  • ________ reactions involve the addition of water via a hydrocarbon double or triple bond. (Hydration)
  • ________ reactions involve the addition of hydrogen through a double or triple bond in a hydrocarbon. (Condensation)
  • Hydrocarbons can undergo _______ reactions with strong acids, producing ions and forming new compounds. (Acid)
  • The reaction of an alkane with chlorine under ultraviolet light is an example of _______. (Free Radical Halogenation)
  • The reaction of an alkene with bromine in a nonpolar solvent is an example of ________. (Electrophilic addition)
  • The reaction of an alkyne with water in the presence of a strong acid is an example of _________. (Acid catalyzed hydration)
  • The reaction of an alkene with hydrogen gas in the presence of a metal catalyst is an example of _________. (Catalytic hydrogenation)
  • The reaction of an alkane with sulfuric acid to produce an alkyl bisulfate is an example of ________. (Sulfonation)

Important Questions on Hydrocarbon MCQs

Important questions on Hydrocarbon MCQs are an extremely helpful resource for those getting ready for the Army, Navy, and Pakistan Air Force entrance exams. Numerous hydrocarbon-related topics are covered by these well chosen multiple-choice questions, including ones with a significant search volume like functional groups, hydrocarbon reactions, and nomenclature.

These hydrocarbon MCQs (multiple-choice questions) make sure candidates are ready for the chemistry tests that are administered during the selection process by including these crucial topics. These hydrocarbon MCQs (multiple-choice questions) are a priceless tool for anyone hoping to excel in their scholastic pursuits within the armed forces.

Hydrocarbon MCQs (Part-5)

  • The reaction of an alkene with ozone followed by reduction is an example of _________. (Osonolysis)
  • ________ reactions involve the replacement of one functional group by another in a hydrocarbon. (Substitution)
  • The reaction of an alkane with chlorine in the presence of heat or light is an example of ______________. (Free Radical Substitution)
  • ________ reactions involve the rearrangement of atoms in a hydrocarbon, resulting in the formation of structural isomers. (Isomerization)
  • ________ reactions involve the replacement of one functional group by another in a hydrocarbon. (Substitution)
  • The reaction of an alkane with chlorine in the presence of heat or light is an example of ______________. (Free Radical Substitution)
  • ________ reactions involve the rearrangement of atoms in a hydrocarbon, resulting in the formation of structural isomers. (Isomerization)
  • Crude oil is a complex mixture of _______ compound. (Hydrocarbon)
  • The main source of oil is the remains of _______ ancient marine organisms. (Petrified)
  • The process of separating oil into components based on its boiling point is called ________. (Fractionation)
  • ________ is the lowest boiling part of oil that consists mainly of gases. (Gasoline/Gasoline)
  • _______ is the fraction of oil that has a higher boiling point than gasoline and is used as fuel for heating and electricity generation. (Diesel)
  • ________ is the fraction of oil with the highest boiling point, used for lubrication and as a raw material for waxes and asphalt. (Residue/bitumen)
  • The process of converting the heavier fractions of oil into lighter and more valuable products is called ________. (Cracking)
  • ________ cracking involves the use of heat and pressure in the absence of oxygen to break larger hydrocarbon molecules into smaller ones. (Heat)
  • ________ cracking involves the use of a catalyst to break larger hydrocarbon molecules into smaller ones. (Catalytic)
  • The process of joining smaller hydrocarbon molecules to form larger molecules is called _______. (Polymerization)
  • ________ is a refining process that removes impurities such as sulfur from oil fractions. (Sulfurization)
  • The process of converting unsaturated hydrocarbons into saturated hydrocarbons by adding hydrogen is called ________. (Hydrogenation)
  • ________ is a refining process that converts straight chain hydrocarbons into branched chain hydrocarbons and improves the octane rating of gasoline. (Isomerization)
  • ________ is a measure of resistance of fuel in internal combustion engines to knocking. (Octane number)
  • _______ is the process by which oxygen is added to a hydrocarbon to produce an alcohol or carboxylic acid. (Oxide).

You May Like More Here for Chemistry and others

Similar Posts