COMEDK UGET 2025 May 10 Shift 2 Question Paper (Soon): Download Solutions with Answer Key

COMEDK UGET Questions

• 1.

  4 statements are given below. Identify the incorrect statement:

  (A) Phenol has lower \( pK_a \) value than \( \text{p} \)-cresol.
  (B) 2-Chlorophenol is more acidic than phenol.
  (C) Ortho and para nitrophenols can be separated by steam distillation since \( \text{p} \)-Nitrophenol is more steam volatile than \( o \)-Nitrophenol.
  (D) Phenol on reaction with \( \text{Cr}_2\text{O}_7^{2-} / \text{H}^+ \) yields a conjugated diketone.

  • C
  • B
  • D
  • A
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• 2.

  A transformer which steps down 330 V to 33 V is to operate a device having impedance 110 $\Omega$. The current drawn by the primary coil of the transformer is:

  • 0.3 A
  • 0.03 A
  • 3 A
  • 1.5 A
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• 3.

  The domain of the function $ y = \frac{1}{\log_{10}(3 - x)} + \sqrt{x + 7} $ is:
  

  • \( [-7, 3] \setminus \{1\} \)
  • \( (-7, 3) \setminus \{0\} \)
  • \( [-7, 3] \setminus \{2\} \)
  • \( (-7, 3) \)
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• 4.

  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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• 5.

  If the matrix $ A $ is such that $ A \begin{pmatrix} -1 & 2 \\ 3 & 1 \end{pmatrix} = \begin{pmatrix} -4 & 1 \\ 7 & 7 \end{pmatrix} \text{ then } A \text{ is equal to} $

  • \( \begin{pmatrix} 1 & 2 \\ 1 & -3 \end{pmatrix} \)
  • \( \begin{pmatrix} -1 & 2 \\ 1 & 3 \end{pmatrix} \)
  • \( \begin{pmatrix} 1 & -2 \\ 1 & 3 \end{pmatrix} \)
  • \( \begin{pmatrix} 1 & 2 \\ 3 & -1 \end{pmatrix} \)
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• 6.

  If 216 drops of the same size are charged at 200 V each and they combine to form a bigger drop, the potential of the bigger drop will be

  • 2400 V
  • 7200 V
  • 1200 V
  • 8200 V
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