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Indian Navy SSR Polymers — practice questions

Explore 56 free Polymers questions in Indian Navy SSR Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Polymers questions and exercises with answers

Showing questions 1–30 of 56.

As per your syllabus, Mechanism, the FIRST step of methane chlorination under sunlight is best described as which?Read the answer and worked solution →As per your syllabus, the carbon-carbon triple bond in ethyne (HC≡CH) consists of which σ/π combination?Read the answer and worked solution →As per your syllabus, which of the following groups is a META-directing substituent on benzene?Read the answer and worked solution →Order the atomic models as they were proposedRead the answer and worked solution →Match each scientist to their modelRead the answer and worked solution →Match each model to what it could NOT explainRead the answer and worked solution →True or false: Rutherford's modelRead the answer and worked solution →True or false: Bohr's modelRead the answer and worked solution →Complete the reason Bohr's model failsRead the answer and worked solution →Which model does this belong to?Read the answer and worked solution →Match each quantum number to what it is calledRead the answer and worked solution →True or false: the quantum mechanical modelRead the answer and worked solution →Order the structure: from atom down to electronRead the answer and worked solution →Complete the (n + l) ruleRead the answer and worked solution →True or false: orbital energiesRead the answer and worked solution →Match each rule to what it forbids or requiresRead the answer and worked solution →Tap every statement Hund's rule requiresRead the answer and worked solution →The fundamental particlesRead 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 →Which principle is being described?Read the answer and worked solution →Flip and pair: symbol with meaningRead the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Tap every statement true of the Schrodinger modelRead the answer and worked solution →Reading the models backRead the answer and worked solution →Assertion and reason: filling orbitalsRead the answer and worked solution →True or false: shells and subshellsRead the answer and worked solution →Complete the two filling rulesRead the answer and worked solution →Match each scientist to their contributionRead the answer and worked solution →

Worked practice questions

As per your syllabus, Mechanism, the FIRST step of methane chlorination under sunlight is best described as which?

  1. Heterolysis of C-H bond
  2. Markovnikov addition
  3. Homolysis of Cl-Cl bond
  4. Wurtz coupling
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Correct answer: C. Homolysis of Cl-Cl bond

syllabus Mechanism (i): Cl-Cl homolysis under hν gives two Cl• free radicals. Free-radical chain mechanism.

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As per your syllabus, the carbon-carbon triple bond in ethyne (HC≡CH) consists of which σ/π combination?

  1. 1 σ + 2 π
  2. 3 σ
  3. 2 σ + 1 π
  4. 1 σ + 1 π
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Correct answer: A. 1 σ + 2 π

Your syllabus: C≡C = 1 σ (sp-sp axial) + 2 π (two perpendicular p-orbital pairs). Carbons sp hybridised, linear.

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As per your syllabus, which of the following groups is a META-directing substituent on benzene?

  1. -NO₂
  2. -OH
  3. -OCH₃
  4. -NH₂
Show answer and solution

Correct answer: A. -NO₂

Your syllabus: -NO₂, -CN, -CHO, -COR, -COOH, -SO₃H are meta directors (also deactivators). -OH/-NH₂/-OR are o/p directing activators.

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More Chemistry topics

Organic ChemistryAlkenesAlcohols Phenols EthersChemical Equilibriump-Block ElementsThe p-Block ElementsAtoms and MoleculesClassification of Elements