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Indian Navy 10+2 B.Tech Cadet Chemical Bonding — practice questions

Explore 27 free Chemical Bonding questions in Indian Navy 10+2 B.Tech Cadet Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Chemical Bonding questions and exercises with answers

Showing questions 1–27 of 27.

Number of σ and π bonds in C₂H₄ (ethene):Read the answer and worked solution →The hybridisation of carbon in ethyne (HC$\equiv$CH) is:Read the answer and worked solution →The bond in N2 (nitrogen molecule) is a: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 →Assertion and reason: structureRead the answer and worked solution →Flip and pair: parameter with what it measuresRead the answer and worked solution →

Worked practice questions

Number of σ and π bonds in C₂H₄ (ethene):

  1. 1 σ + 1 π
  2. 2 σ + 2 π
  3. 4 σ + 1 π
  4. 5 σ + 1 π
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Correct answer: D. 5 σ + 1 π

C₂H₄ has C=C (1 σ + 1 π) plus 4 C-H bonds (4 σ). **Total:** 5 σ bonds + 1 π bond. The π bond restricts rotation around C=C.

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The hybridisation of carbon in ethyne (HC$\equiv$CH) is:

  1. sp, giving a linear molecule with $180^\circ$ bond angle
  2. sp$^2$, giving a trigonal planar shape at carbon centre
  3. sp$^3$, giving the tetrahedral shape around the carbon
  4. sp$^3$d, with five bonds around each of the carbons
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Correct answer: A. sp, giving a linear molecule with $180^\circ$ bond angle

Triple bond carbon is sp hybridised; ethyne is linear.

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The bond in N2 (nitrogen molecule) is a:

  1. Single covalent bond (1 sigma)
  2. Double bond (1 sigma + 1 pi)
  3. Single ionic bond
  4. Triple bond (1 sigma + 2 pi)
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Correct answer: D. Triple bond (1 sigma + 2 pi)

N≡N (triple bond): 1 sigma + 2 pi bonds. Each N atom contributes 3 e⁻ to share. Very strong (945 kJ/mol), making N2 unreactive.

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More Chemistry topics

Alcohols Phenols EthersOrganic ChemistryAlkenesPolymersChemical EquilibriumAtoms and MoleculesStates of MatterClassification of Elements