Moist air at 35°C and 100% relative humidity is entering

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Moist air at 35°C and 100% relative humidity is entering a psychrometric device and leaving at 25°C and 100% relative humidity. The name of the device is

1. Humidifier
2. Dehumidifier
3. Sensible heater
4. Sensible cooler

Correct Option: B

Since water content in moist air is reducing. The device is dehumidifer.