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OJEE Chemical Equilibrium — practice questions — page 2

Explore 105 free Chemical Equilibrium questions in OJEE Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Chemical Equilibrium questions and exercises with answers

Showing questions 31–60 of 105.

A coordinate (dative) bond differs from a normal covalent bond in thatRead the answer and worked solution →Which species has sp hybridisation on the central atom?Read the answer and worked solution →As bond order increases, bond lengthRead the answer and worked solution →An ionic bond forms byRead the answer and worked solution →The shape of NH₃ is pyramidal rather than planar becauseRead the answer and worked solution →Which has the highest dipole moment?Read the answer and worked solution →Among the following, which is paramagnetic?Read the answer and worked solution →Formal charge on an atom =Read the answer and worked solution →NEET · Chemistry · Le Chatelier — Shifts Right or LeftRead the answer and worked solution →NEET · Chemistry · Acid–Base pH — Gap FillRead the answer and worked solution →NEET · Chemistry · True or False — EquilibriumRead 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 →

Worked practice questions

A coordinate (dative) bond differs from a normal covalent bond in that

  1. no electrons are shared
  2. electrons are transferred
  3. both shared electrons come from one atom
  4. it is always ionic
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Correct answer: C. both shared electrons come from one atom

In a dative bond both electrons of the shared pair are donated by one atom (e.g. NH₄⁺).

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Which species has sp hybridisation on the central atom?

  1. CH₄
  2. H₂O
  3. BeCl₂
  4. BF₃
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Correct answer: C. BeCl₂

BeCl₂ is linear with two sigma bonds → sp. BF₃ is sp² (trigonal planar), CH₄ sp³, H₂O sp³.

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As bond order increases, bond length

  1. stays constant
  2. decreases
  3. becomes zero
  4. increases
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Correct answer: B. decreases

Higher bond order means more shared electron density and a stronger, shorter bond.

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More Chemistry topics

Ideal and Non-Ideal SolutionsIdeal SolutionsNon-Ideal SolutionsReactions in Aqueous SolutionElectrochemistryElectrochemical SeriesSolutionsCoordination Compounds