BCECE 2015 Biology Question Paper with Answer Key PDFs (May 17 - Afternoon Session)

BCECE Questions

• 1.

  What color does Silver Chloride (AgCl) turn upon exposure to sunlight?
  

  • Grey
    
  • White
    
  • Yellow
    
  • Brown
    
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• 2.

  Which of the following oxides will be the most basic: Ti (22), V (23), Cr (24), Fe (26)?
  

  • Ti (Titanium)
    
  • V (Vanadium)
    
  • Cr (Chromium)
    
  • Fe (Iron)
    
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• 3.

  What is Insulin chemically?
  

  • Carbohydrate
    
  • Lipid
    
  • Protein
    
  • Vitamin
    
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• 4.

  The best indicator for titrating 0.1 N Na₂CO₃ against 0.1 N HCl is:

  • Methyl orange
    
  • Litmus
    
  • Phenolphthalein
    
  • Potassium ferricyanide
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• 5.

  The bond dissociation energies of gaseous H₂, Cl₂, and HCl are 104, 58, and 103 kcal, respectively. The enthalpy of formation of HCl gas would be:

  • -44 kcal
    
  • -88 kcal
    
  • -22 kcal
    
  • -11 kcal
    
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• 6.

  Calculate the number of unpaired electrons in [Mn(H₂O)₆]²⁺, considering H₂O as a weak field ligand. (Atomic number of Mn = 25)

  • Two
    
  • Three
    
  • Four
    
  • Five
    
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