1.

When the room temperature becomes equal to the dew point , the relative humidity of the room is

Answer»

`100 %`
ZERO %
`70%`
`85 %`

SOLUTION :Relative HUMIDITY
` = " Saturation vapour pressure at dew point temperature "/"Saturation vapour pressure at room temperature " `
Now, room temperature = dew point temperature (given)
` :.` Relative humidity ` = 1 xx 100% = 100 %`.


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