Chemistry Chapter 8 – Aliphatic Hydrocarbons (Class 12) for FSC, Entry Tests & NTS Preparation
Chapter 8, Aliphatic Hydrocarbons, is an important topic for Class 12 students preparing for FSC board exams and medical/engineering entry tests like MDCAT, NUMS, AKU, NUST, ECAT, and NTS exams. This chapter explains the structure, nomenclature, properties, and reactions of aliphatic hydrocarbons, which include alkanes, alkenes, and alkynes. Understanding aliphatic hydrocarbons is essential for studying organic reaction mechanisms and the behavior of carbon-based compounds.
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Benzene can be prepared from:
NTS 2011
Chemistry
Hydrocarbons
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Percentage of butane in Sui gas is?
NTS 2015 SMBBMC
Biology
Hydrocarbons
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Which one of these is/are gasses?
Which one of the following has the least C — C bond length?
Physical properties of Ethyne is/are:
PreMedPK MDCAT Mock 3
Chemistry
Hydrocarbons
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In which of the following C-C bond length is the minimum?
In Alkenes the Carbon atoms are connected to each other by a
The general formula of Methane Dichloride is:
Catalytic hydrogenation of alkenes exhibits:
PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:
20 cm3 of a gaseous hydrocarbon was completely burnt in an excess of oxygen 60 cm3 of carbon dioxide and 40 cm3 of water vapours were formed, all volumes being measured at the same temperature and pressure. What is the formula of the hydrocarbon?
NTS 2015 SMBBMC
Chemistry
Hydrocarbons
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Sp hybridization is found In which of the following?
CH ≡ CH + 2AgNO3 -> AgC ≡ CAg + 2HNO3 represents _____ property of acetylene.
NTS 2012
Chemistry
Hydrocarbons
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Acetylene with Cl2 gives:
IUPAC Nomenclature of:
CH3 – CH = CH – CH2 – CH = CH2 is:
NTS 2011
Chemistry
Hydrocarbons
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The addition of HBr to an unsymmetrical alkenes follows?
PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
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When CH3 is attached to the benzene ring, it makes the ring a:
PMC 2020
Chemistry
Hydrocarbons
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Which of the following compounds possesses a single covalent bond between carbon and hydrogen?
NUMS 2016
Chemistry
Hydrocarbons
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Generic formula of cycloalkane is:
PMC 2020
Chemistry
Hydrocarbons
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In alkanes all carbon atoms are linked by bond
Unsaturated Compound containing double bond is:
Electrophile in sulphonation of benzene is:
PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
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When CH2 = CH2 reacts with a halogen acid, the product formed is:
20 cm3 of a gaseous hydrocarbon was completely burnt in an excess of oxygen 60 cm3 of carbon dioxide and 40 cm3 of water vapours were formed, all volumes being measured at the same temperature and pressure. What is the formula of the hydrocarbon?
PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
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Formula of propene is
What Is Lindlar Catalyst?
Which among the following gives ppt. with terminal alkynyl hydrogen?
PreMedPK MDCAT Mock 4
Hydrocarbons
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Which of the following compounds will form a hydrocarbon on reaction with Grignard reagent?
PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
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In which of the following cases are the benzene rings isolated?
PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
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The electrophilic reactions of Benzene are:
PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
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How many sigma groups are there in benzene?
NTS 2014
Chemistry
Hydrocarbons
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Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?
PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
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Molecular Formula of Propane is:
Benzene in the presence of AlCl3 produces acetophenone when reacts with:
PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
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Boiling point of heptane is:
Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?
NTS 2013
Chemistry
Hydrocarbons
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Alkanes having five to seventeen carbon atoms per molecule are:
NTS 2013
Chemistry
Hydrocarbons
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Benzene can be prepared from:
PreMedPK MDCAT Mock 2
Chemistry
Hydrocarbons
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Which one of the following molecules has the shortest distance of carbon atoms?
PreMedPK MDCAT Mock 3
Chemistry
Hydrocarbons
Elimination Tool:
Electrophile in sulphonation of benzene is:
PMC 2020
Chemistry
Hydrocarbons
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The electrophilic reactions of Benzene are:
NTS 2011
Chemistry
Hydrocarbons
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Which one of the organic compounds Is the most reactive?
H2 and Cl2 do not react in the dark, but in the presence of light a vigorous reaction is initiated due to the formation of:
NUMS 2016
Chemistry
Hydrocarbons
Elimination Tool:
KOLBE’s method is used to prepare?
Which of the following compounds possesses a single covalent bond between carbon and hydrogen?
PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
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How many chain isomers are shown by C5H12?
NTS 2018
Chemistry
Hydrocarbons
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Which metal is used to form alkanes from alkyl halides?
Which one of the following molecules has the shortest distance of carbon atoms?
NTS 2013
Chemistry
Hydrocarbons
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Which type of isomerism depends on the distribution of carbon atoms on each side of the functional group?
PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
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Formula of Thionyl chloride is
The major source of unburnt hydrocarbons in the atmosphere is / are:
NUMS 2016
Chemistry
Hydrocarbons
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Which one of the following is saturated hydrocarbon?
How many chain isomers are shown by C5H12?
PreMedPK MDCAT Mock 4
Chemistry
Hydrocarbons
Elimination Tool:
Which gas among the following can be dried by bubbling in H2S04?
Catenation is a process in which carbon shows the properties of:
NTS 2010
Chemistry
Hydrocarbons
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In the reaction, R-C≡C-R → the reagent used to convert alkyne into trans alkene is:
NTS 2014
Chemistry
Hydrocarbons
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Which of the following compounds react slower than benzene in electrophilic substitution reaction?
PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
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) If 2-butene is treated with KMn04, the product is:
The IUPAC name of the compound having structural formula CH3 — CH(OH) —COON is:
Methane reacts with chlorine to form chloromethane. The catalyst used is?
NTS 2015 SMBBMC
Biology
Hydrocarbons
Elimination Tool:
When CH3 is attached to the benzene ring, it makes the ring a:
PreMedPK MDCAT Mock 1
Chemistry
Hydrocarbons
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Which step should be repeated over and over to get a variety of substituted products?
PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
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1,4-dimethyl benzene is called as ______.
PreMedPK MDCAT Mock 5
Chemistry
Hydrocarbons
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Key Concepts about Aliphatic Hydrocarbons
The chapter explains the classification of aliphatic hydrocarbons, their IUPAC nomenclature, physical properties, and chemical reactions such as substitution, addition, and oxidation. It covers mechanisms of reactions, including free radical substitution in alkanes and electrophilic addition in alkenes. The chapter also discusses industrial applications, uses of hydrocarbons as fuels, and preparation methods of different types of aliphatic hydrocarbons. Each concept is illustrated with examples, diagrams, and step-by-step explanations. These concepts are highly important for FSC board exams and entry tests like MDCAT, NUMS, AKU, NUST, and ECAT.
Free Entry Test Preparation
Mastery of aliphatic hydrocarbons helps students understand reaction mechanisms, solve numerical and conceptual problems, and apply concepts to industrial and laboratory processes. PLS Academy provides practice questions, solved past papers, and chapter-wise MCQs to help students revise these topics effectively. Regular study of this chapter improves problem-solving skills, conceptual clarity, and exam performance, ensuring students are well-prepared for FSC board exams, competitive entry tests, and NTS exams.
JazakAllah.
