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NEET UG Hydrocarbons — practice questions — page 2

Explore 129 free Hydrocarbons questions in NEET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Hydrocarbons questions and exercises with answers

Showing questions 31–60 of 129.

Coal gas is obtained from coal by:Read the answer and worked solution →Saturated hydrocarbons whose carbon atoms form a ring are called:Read the answer and worked solution →Methane occurs naturally in:Read the answer and worked solution →General formula of the alkane homologous series is:Read the answer and worked solution →Each H-C-H bond angle in methane is:Read the answer and worked solution →In alkanes, the C-C bond length is about:Read the answer and worked solution →How many chain isomers does C5H12 have?Read the answer and worked solution →How many structural isomers are possible for hexane, C6H14?Read the answer and worked solution →About how many isomers are possible for C10H22?Read the answer and worked solution →Isomers that differ only in their carbon skeleton are:Read the answer and worked solution →A carbon atom bonded to four other carbon atoms is:Read the answer and worked solution →The end carbon atoms of an open alkane chain are always:Read the answer and worked solution →2,2-Dimethylpropane is commonly called:Read the answer and worked solution →Groups formed by removing one hydrogen from an alkane are:Read the answer and worked solution →Which alkyl halides are not reduced to alkanes by Zn and dilute HCl?Read the answer and worked solution →Wurtz coupling of one alkyl halide gives alkanes with:Read the answer and worked solution →Soda lime is a mixture of:Read the answer and worked solution →Heating sodium propanoate with soda lime gives:Read the answer and worked solution →Kolbe electrolysis of aqueous sodium acetate produces:Read the answer and worked solution →Petrol removes grease stains because grease is:Read the answer and worked solution →Boiling points of alkanes rise with molecular mass because:Read the answer and worked solution →More branching lowers an alkane's boiling point because molecules become:Read the answer and worked solution →Chlorination of methane in diffused sunlight is a:Read the answer and worked solution →Order of reactivity of halogens with alkanes is:Read the answer and worked solution →Free radical halogenation has initiation, propagation and:Read the answer and worked solution →Chlorination of methane begins with homolysis of Cl2 because:Read the answer and worked solution →Ethane forms as a by-product in chlorination of methane because:Read the answer and worked solution →n-Alkanes heated with anhydrous AlCl3 and HCl gas undergo:Read the answer and worked solution →n-Hexane over Cr2O3 on alumina at 773 K forms benzene. This is:Read the answer and worked solution →Which n-alkane gives toluene on aromatisation?Read the answer and worked solution →

Worked practice questions

Coal gas is obtained from coal by:

  1. Fractional distillation
  2. Vacuum distillation
  3. Destructive distillation
  4. Steam distillation
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Correct answer: C. Destructive distillation

Heating coal strongly in the absence of air, called destructive distillation, releases coal gas.

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Saturated hydrocarbons whose carbon atoms form a ring are called:

  1. Cycloalkanes
  2. Arenes
  3. Alkanes
  4. Cycloalkenes
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Correct answer: A. Cycloalkanes

Single-bonded carbon atoms joined in a closed ring make a cycloalkane.

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Methane occurs naturally in:

  1. Salt lakes and sea water
  2. Limestone caves and deserts
  3. Coal mines and marshy places
  4. Volcanic vents and hot springs
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Correct answer: C. Coal mines and marshy places

Methane, the marsh gas, collects in coal mines and marshy places.

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More Chemistry topics

Amines and BiomoleculesChemical KineticsAldehydes, Ketones and Carboxylic AcidsEquilibriumRedox ReactionsChemical Bonding and Molecular StructureSolutionsStructure of Atom