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AP Intermediate 1st Year Organic Chemistry: Some Basic Principles and Techniques — practice questions

Explore 47 free Organic Chemistry: Some Basic Principles and Techniques questions in AP Intermediate 1st Year Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Organic Chemistry: Some Basic Principles and Techniques questions and exercises with answers

Showing questions 1–30 of 47.

As per your syllabus, the property of carbon that allows it to form long chains with itself is called what?Read the answer and worked solution →As per your syllabus, the relative ELECTRONEGATIVITY of carbon hybridised as sp, sp², sp³ goes in which order?Read the answer and worked solution →As per your syllabus, rotation about a C=C double bond in ethene (H₂C=CH₂) is best described as which?Read the answer and worked solution →As per your syllabus, the bond LENGTHS of single bonds formed by sp, sp², sp³ carbons go in which order?Read the answer and worked solution →As per your syllabus, in HC≡C-CH=CH-CH₃ the total number of σ and π bonds is which set?Read the answer and worked solution →As per your syllabus, the hybridisation of carbon in HC≡N (hydrogen cyanide) is which?Read the answer and worked solution →As per your syllabus, open-chain hydrocarbons (straight or branched) are also called by which name?Read the answer and worked solution →As per your syllabus, (a), tetrahydrofuran (a 5-membered ring with one O) is best classified as which kind?Read the answer and worked solution →As per your syllabus, (b), furan, thiophene, and pyridine are examples of which kind of compounds?Read the answer and worked solution →As per your syllabus, successive members of a HOMOLOGOUS SERIES differ from each other in molecular formula by which unit?Read the answer and worked solution →As per your syllabus, the first step in naming a branched alkane is to identify which feature?Read the answer and worked solution →As per your syllabus, rule 2, when numbering the parent chain, the goal is to give substituents which kind of locants?Read the answer and worked solution →As per your syllabus, rule 3, when listing different alkyl substituents in the IUPAC name, the order is which?Read the answer and worked solution →As per your syllabus, rule 4, when there are TWO identical substituents on the parent chain, the prefix used is which?Read the answer and worked solution →As per your syllabus, Problem 8.7(a), the correct IUPAC name for CH₃-CH(CH₃)-CH₂-CH₂-CH(CH₃)-CH(CH₃)-CH₂-CH₃ is which?Read the answer and worked solution →As per your syllabus, the IUPAC SUFFIX for an aldehyde (-CHO) functional group is which?Read the answer and worked solution →As per your syllabus, the IUPAC SUFFIX for a ketone (>C=O) functional group is which?Read the answer and worked solution →As per your syllabus, in a polyfunctional compound with both -COOH and -OH groups, the PRINCIPAL functional group is which?Read the answer and worked solution →As per your syllabus, example, HOCH₂(CH₂)₃CH₂COCH₃ should be named as which?Read the answer and worked solution →As per your syllabus, in trivial nomenclature of disubstituted benzene, the prefix indicating 1,4-positions is which?Read the answer and worked solution →As per your syllabus, in IUPAC nomenclature, the benzene ring as a substituent (C₆H₅-) is called by which name?Read the answer and worked solution →As per your syllabus, example, CH₃-CO-CH₂-CH₂-CH₂-COOH is named as which?Read the answer and worked solution →As per your syllabus, n-pentane and 2,2-dimethylpropane (neopentane) are examples of which kind of isomerism?Read the answer and worked solution →As per your syllabus, propan-1-ol and propan-2-ol are examples of which kind of isomerism?Read the answer and worked solution →As per your syllabus, propanal (CH₃CH₂CHO) and propanone (CH₃COCH₃) (both C₃H₆O) are examples of which isomerism?Read the answer and worked solution →As per your syllabus, methoxypropane (CH₃OC₃H₇) and ethoxyethane (C₂H₅OC₂H₅) (both C₄H₁₀O) are examples of which?Read the answer and worked solution →As per your syllabus, in HETEROLYTIC cleavage of a covalent bond, the shared pair of electrons goes to which fragment?Read the answer and worked solution →As per your syllabus, in HOMOLYTIC cleavage of a covalent bond, the shared pair of electrons goes to which fragment?Read the answer and worked solution →As per your syllabus, the observed STABILITY order of carbocations from least to most stable is which?Read the answer and worked solution →As per your syllabus, the methyl carbocation (CH₃⁺) has which geometry and hybridisation?Read the answer and worked solution →

Worked practice questions

As per your syllabus, the property of carbon that allows it to form long chains with itself is called what?

  1. Resonance
  2. Catenation
  3. Polymerisation
  4. Hybridisation
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Correct answer: B. Catenation

syllabus intro: catenation = self-linkage of carbon atoms gives rise to millions of organic compounds.

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As per your syllabus, the relative ELECTRONEGATIVITY of carbon hybridised as sp, sp², sp³ goes in which order?

  1. sp² > sp > sp³
  2. sp³ > sp² > sp
  3. sp > sp² > sp³
  4. All are equal
Show answer and solution

Correct answer: C. sp > sp² > sp³

Your syllabus: greater s character ⇒ greater electronegativity. sp (50%) > sp² (33%) > sp³ (25%).

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As per your syllabus, rotation about a C=C double bond in ethene (H₂C=CH₂) is best described as which?

  1. Random
  2. Restricted
  3. Faster than C-C
  4. Free
Show answer and solution

Correct answer: B. Restricted

Your syllabus: π bond requires parallel p-orbital overlap rotating one CH₂ would break the π bond, so rotation is restricted.

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