KCET Question Paper 2026: Download Answer Key and Solution PDF

KCET 2026 Questions

• 1.

  Thalassemia and Sickle cell anaemia are due to a problem in globin molecule synthesis. Select the correct statement.
  

  • Sickle cell anaemia is due to a quantitative problem of globin molecule.
    
  • Both are due to qualitative defects in globin chain synthesis.
    
  • Both are due to quantitative defects in globin chain synthesis.
    
  • Thalassemia is due to less synthesis of globin molecules.
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• 2.

  The following statements are the steps in the catalytic action of an enzyme. Arrange them in correct sequence.
  a) The active site of the enzyme, now in close proximity of the substrate, breaks the chemical bonds of the substrate and the new enzyme product complex is formed.
  b) The substrate binds tightly to the enzyme, inducing a change in the active site of the enzyme.
  c) The enzyme releases the products of the reaction and the free enzyme is ready to bind to another molecule of the substrate.
  d) The substrate binds to the active site of the enzyme.
  

  • c, a, b, d
    
  • d, b, a, c
    
  • a, b, c, d
    
  • d, c, b, a
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• 3.

  For a 1st order change R \(\rightarrow\) P, the concentration of Reactant R changes from 0.1 M to 0.025 M in 40 minutes. The rate of reaction when the concentration of R is 0.01 M is
  

  • \( 1.73 \times 10^{-5} \text{ M min}^{-1} \)
    
  • \( 3.47 \times 10^{-4} \text{ M min}^{-1} \)
    
  • \( 3.47 \times 10^{-5} \text{ M min}^{-1} \)
    
  • \( 1.73 \times 10^{-4} \text{ M min}^{-1} \)
    
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• 4.

  The relative lowering of vapour pressure produced by dissolving 18 g of urea (Molar mass = 60 g mol\(^{-1}\)) in 100 g of water is
  

  • 0.025
    
  • 0.5
    
  • 0.05
    
  • 0.25
    
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• 5.

  Consider three point charges \(-2Q, Q\) and \(-Q\) and three surfaces S\(_1\), S\(_2\) and S\(_3\) as shown in the figure. Match the entries of List-I with that of List-II.
  

  

  List-I
  (a) Net flux through S\(_1\)
  (b) Net flux through S\(_2\)
  (c) Net flux through S\(_3\)
  List-II
  (i) \(\frac{-2Q}{\epsilon_0}\)
  (ii) \(\frac{-Q}{\epsilon_0}\)
  (iii) Zero
  Codes:
  

  • a - ii, b - i, c - iii
    
  • a - iii, b - ii, c - i
    
  • a - i, b - ii, c - iii
    
  • a - ii, b - iii, c - i
    
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