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Indian Navy Pilot Hydrocarbons — practice questions

Explore 32 free Hydrocarbons questions in Indian Navy Pilot 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 1–30 of 32.

As per your syllabus, + Fig 9.1, the H-C-H bond angle in methane and the carbon hybridisation are which?Read the answer and worked solution →As per your syllabus, the rate of substitution of HYDROGENS in alkane halogenation goes in which order (by carbon class)?Read the answer and worked solution →As per your syllabus, partial reduction of an alkyne to a CIS alkene uses which catalyst?Read the answer and worked solution →As per your syllabus, addition of water to propyne under HgSO₄/H₂SO₄ gives mainly which product (Markovnikov)?Read the answer and worked solution →As per your syllabus, the carbon atoms of benzene are which hybridisation?Read the answer and worked solution →As per your syllabus, nitration, the actual ELECTROPHILE that attacks benzene in HNO₃ + H₂SO₄ mixture is which species?Read the answer and worked solution →As per your syllabus, Friedel-Crafts ACYLATION of benzene uses an acyl halide + AlCl₃ to generate which electrophile?Read the answer and worked solution →As per your syllabus, halogens (-Cl, -Br) on benzene are which kind of directors despite their deactivating -I effect?Read the answer and worked solution →Match each scientist to their contributionRead the answer and worked solution →Ionic or covalent?Read the answer and worked solution →Complete the driver of bond formationRead the answer and worked solution →Single, double and triple bondsRead the answer and worked solution →True or false: Lewis structuresRead the answer and worked solution →Complete the definition of resonanceRead the answer and worked solution →Tap every bond parameter the chapter namesRead the answer and worked solution →True or false: ionic solidsRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Bonded pair or lone pair?Read the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Order the reasoning: why resonance is neededRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →True or false: what bond parameters affectRead the answer and worked solution →Bond parameters in useRead the answer and worked solution →Which parameter answers this?Read the answer and worked solution →True or false: resonanceRead the answer and worked solution →Order the steps: draw a Lewis structureRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →

Worked practice questions

As per your syllabus, + Fig 9.1, the H-C-H bond angle in methane and the carbon hybridisation are which?

  1. 180° and sp
  2. 109.5° and sp³
  3. 104.5° and sp³
  4. 120° and sp²
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Correct answer: B. 109.5° and sp³

Your syllabus: methane has tetrahedral geometry, sp³ carbon, all H-C-H bond angles 109.5°.

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As per your syllabus, the rate of substitution of HYDROGENS in alkane halogenation goes in which order (by carbon class)?

  1. 2° > 3° > 1°
  2. 1° > 2° > 3°
  3. All equal
  4. 3° > 2° > 1°
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Correct answer: D. 3° > 2° > 1°

Your syllabus: 3° > 2° > 1° (matches free-radical stability — tertiary radical is most stable).

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As per your syllabus, partial reduction of an alkyne to a CIS alkene uses which catalyst?

  1. Lindlar's catalyst
  2. Sodium in liquid NH₃
  3. Pt/Pd in H₂SO₄
  4. Anhydrous AlCl₃
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Correct answer: A. Lindlar's catalyst

Your syllabus: Lindlar's (Pd on CaCO₃, poisoned by S or quinoline) gives cis. Na in liq NH₃ gives trans.

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More Chemistry topics

Alcohols Phenols EthersAlkenesOrganic ChemistryPolymersChemical EquilibriumStates of MatterAtoms and MoleculesClassification of Elements