JEE Main Organic Chemistry: Some Basic Principles and Techniques — practice questions
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Practice JEE Main Organic Chemistry: Some Basic Principles and Techniques in the app →Per NCERT §8.2, the property of carbon that allows it to form long chains with itself is called what?Per NCERT §8.2.1, the relative ELECTRONEGATIVITY of carbon hybridised as sp, sp², sp³ goes in which order?Per NCERT §8.2.2, rotation about a C=C double bond in ethene (H₂C=CH₂) is best described as which?Per NCERT §8.2, the bond LENGTHS of single bonds formed by sp, sp², sp³ carbons go in which order?Per NCERT Problem 8.1(a), in HC≡C-CH=CH-CH₃ the total number of σ and π bonds is which set?Per NCERT Problem 8.3(c), the hybridisation of carbon in HC≡N (hydrogen cyanide) is which?Per NCERT §8.4(I), open-chain hydrocarbons (straight or branched) are also called by which name?Per NCERT §8.4(II)(a), tetrahydrofuran (a 5-membered ring with one O) is best classified as which kind?Per NCERT §8.4(II)(b), furan, thiophene, and pyridine are examples of which kind of compounds?Per NCERT §8.4.1, a FUNCTIONAL GROUP in an organic molecule is best described as which kind of feature?Per NCERT §8.4.2, successive members of a HOMOLOGOUS SERIES differ from each other in molecular formula by whiPer NCERT §8.1, the 1828 synthesis that disproved the 'vital force' theory was Wöhler converting ammonium cyanPer NCERT §8.5.2 (rule 1), the first step in naming a branched alkane is to identify which feature?Per NCERT §8.5.2 rule 2, when numbering the parent chain, the goal is to give substituents which kind of locanPer NCERT §8.5.2 rule 3, when listing different alkyl substituents in the IUPAC name, the order is which?Per NCERT §8.5.2 rule 4, when there are TWO identical substituents on the parent chain, the prefix used is whiPer NCERT §8.5.2 Problem 8.7(a), the correct IUPAC name for CH₃-CH(CH₃)-CH₂-CH₂-CH(CH₃)-CH(CH₃)-CH₂-CH₃ is whiPer NCERT Table 8.4, the IUPAC SUFFIX for an aldehyde (-CHO) functional group is which?Per NCERT Table 8.4, the IUPAC SUFFIX for a ketone (>C=O) functional group is which?Per NCERT §8.5.3 (priority list), in a polyfunctional compound with both -COOH and -OH groups, the PRINCIPAL fPer NCERT §8.5.3 example, HOCH₂(CH₂)₃CH₂COCH₃ should be named as which?Per NCERT §8.5.4, in trivial nomenclature of disubstituted benzene, the prefix indicating 1,4-positions is whiPer NCERT §8.5.4, in IUPAC nomenclature, the benzene ring as a substituent (C₆H₅-) is called by which name?Per NCERT Problem 8.8(iii) example, CH₃-CO-CH₂-CH₂-CH₂-COOH is named as which?Per NCERT §8.6.1(i), n-pentane and 2,2-dimethylpropane (neopentane) are examples of which kind of isomerism?Per NCERT §8.6.1(ii), propan-1-ol and propan-2-ol are examples of which kind of isomerism?Per NCERT §8.6.1(iii), propanal (CH₃CH₂CHO) and propanone (CH₃COCH₃) (both C₃H₆O) are examples of which isomerPer NCERT §8.6.1(iv), methoxypropane (CH₃OC₃H₇) and ethoxyethane (C₂H₅OC₂H₅) (both C₄H₁₀O) are examples of whiPer NCERT §8.7.1, in HETEROLYTIC cleavage of a covalent bond, the shared pair of electrons goes to which fragmPer NCERT §8.7.1, in HOMOLYTIC cleavage of a covalent bond, the shared pair of electrons goes to which fragmenPer NCERT §8.7.1, the observed STABILITY order of carbocations from least to most stable is which?Per NCERT §8.7.1, the methyl carbocation (CH₃⁺) has which geometry and hybridisation?Per NCERT §8.7.1, a CARBANION has the central carbon in which hybridisation and shape?Per NCERT §8.7.1, a species formed by homolysis with an unpaired electron is called which?Per NCERT §8.7.2 (nucleophiles + electrophiles), a NUCLEOPHILE is best described as which kind of species?Per NCERT Problem 8.12, which of these is best classified as an ELECTROPHILE?Per NCERT §8.7.5, the INDUCTIVE EFFECT in a chain of σ-bonds is best described as which?Per NCERT §8.7.5, the inductive effect typically becomes vanishingly small after how many intervening bonds?Per NCERT §8.7.5, which group acts as an ELECTRON-DONATING group by inductive effect (+I)?Per NCERT §8.7.5, in CH₃-CH₂-CH₂-Br, the inductive effect is felt LEAST in which bond?Per NCERT §8.7.6, the experimentally observed C-C bond length in benzene is which value?Per NCERT §8.7.7, the POSITIVE RESONANCE effect (+R) transfers electrons in which direction?Per NCERT §8.7.7, the NEGATIVE RESONANCE effect (-R) transfers electrons in which direction?Per NCERT §8.7.7, which substituent shows a -R (negative resonance) effect?Per NCERT §8.7.8, the ELECTROMERIC EFFECT (E) is best described as which kind of effect?Per NCERT §8.7.8 (last paragraph), when inductive and electromeric effects oppose each other, which effect prePer NCERT §8.7.9, HYPERCONJUGATION involves the delocalisation of which type of electrons?Per NCERT §8.7.9, in the ethyl cation (CH₃CH₂⁺), the C-H σ-electrons of which group delocalise into the empty