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GATE ME 2012 | Question: 31

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A room contains $35$ kg of dry air and $0.5$ kg of water vapor. The total pressure and temperature of air in the room are $100$ kPa and $25^{\circ}$C respectively. Given that the saturation pressure for water at $25^{\circ}$ C is $3.17$ kPa, the relative humidity of the air in the room is

  1. $67 \%$
  2. $55 \%$
  3. $83 \%$
  4. $71 \%$

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