AP EAPCET Question Paper 2021 (Available): Check Previous Year Question Paper with Solution PDF (2023-2013)

AP EAPCET 2021 Questions

• 1.

  In a series LCR circuit, the voltages across the capacitor, resistor, and inductor are in the ratio 2:3:6. If the voltage of the source in the circuit is 240 V, then the voltage across the inductor is

  • 240 V
  • 144 V
  • 96 V
  • 288 V
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• 2.

  0.25 moles of $ \text{CH}_2\text{FCOOH} $ was dissolved in $ 0.5 \, \text{kg} $ of water. The depression in freezing point of the resultant solution was observed as $ 1^\circ \text{C} $. What is the van't Hoff factor? ($ K_f = 1.86 \, \text{K kg mol}^{-1} $)

  • $ 0.93 $
  • $ 1.07 $
  • $ 1.25 $
  • $ 1.50 $
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• 3.

  A 1% (w/v) aqueous solution of a certain solute is isotonic with a 3% (w/v) solution of glucose (molar mass 180 g mol$^{-1}$). The molar mass of solute (in g mol$^{-1}$) is

  • 120
  • 60
  • 360
  • 80
    
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• 4.

  At $T(K)$, the vapor pressure of water is $x$ kPa. What is the vapor pressure (in kPa) of 1 molal solution containing non-volatile solute?

  • \(1.018x\)
    
  • \(0.8x\)
    
  • \(0.972x\)
    
  • \(0.982x\)
    
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• 5.

  Elements X and Y form two non-volatile compounds (XY and XY$_2$). When 10 g of XY is dissolved in 50 g of ethanol, the depression in freezing point ($\Delta T_f$) was 5.333 K. When 10 g of XY$_2$ is dissolved in 50 g of ethanol, the $\Delta T_f$ was 2.2857 K. What are the atomic weights of X and Y respectively?
  ($K_f = 2 \, \text{kg mol}^{-1}$)

  • 50 u, 50 u
    
  • 25 u, 25 u
    \
  • 75 u, 100 u
    
  • 25 u, 50 u
    
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