COMEDK UGET 2025 May 10 Shift 1 Question Paper (Soon): Download Solutions with Answer Key

COMEDK UGET Questions

• 1.

  For a reaction $ 5X + Y \to 3Z $, the rate of formation of Z is $ 2.4 \times 10^{-5} \, \text{mol L}^{-1} \text{s}^{-1} $. Calculate the average rate of disappearance of X.
  

  • \( 4.8 \times 10^{-7} \, \text{mol L}^{-1} \text{s}^{-1} \)
  • \( 13.33 \times 10^{-6} \, \text{mol L}^{-1} \text{s}^{-1} \)
  • \( 4.0 \times 10^{-5} \, \text{mol L}^{-1} \text{s}^{-1} \)
  • \( 12.0 \times 10^{-5} \, \text{mol L}^{-1} \text{s}^{-1} \)
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• 2.

  At 700 K, the Equilibrium constant value for the formation of HI from $ H_2 $ and $ I_2 $ is 49.0. 0.7 mole of HI(g) is present at equilibrium. What will be the concentrations of $ H_2 $ and $ I_2 $ gases if we initially started with HI(g) and allowed the reaction to reach equilibrium at the same temperature?

  • 0.1195
  • 0.3442
  • 0.4692
  • 0.521
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• 3.

  If potential (in volt) in a region is expressed as $ V(x, y, z) = 6xy - y + 2yz $, the electric field (in} $ \text{N/C} $ at point (1, 0, 1) is:

  • \( -7j \)
  • \( +7j \)
  • \( -6i + 7j \)
  • \( 6i - 7j \)
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• 4.

  Five charges, 'q' each are placed at the corners of a regular pentagon of side 'a' as shown in figure. First, charge from 'A' is removed with other charges intact, then charge at 'A' is replaced with an equal opposite charge. The ratio of magnitudes of electric fields at O, without charge at A and that with equal and opposite charge at A is
  

  • 4 : 1
  • 2 : 1
  • 1 : 4
  • 1 : 2
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• 5.

  A particle executes a simple harmonic motion of amplitude A. The distance from the mean position at which its kinetic energy is equal to its potential energy is:

  • 0.91 A
  • 0.71 A
  • 0.81 A
  • 0.51 A
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• 6.

  Given that the freezing point of benzene is $ 5.48^\circ C $ and its $ K_f $ value is $ 5.12^\circ C/m $, what would be the freezing point of a solution of 20 g of propane in 400 g of benzene?

  • \( -0.34^\circ C \)
  • \( -0.17^\circ C \)
  • \( -5.8^\circ C \)
  • \( -0.2^\circ C \)
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