According to Dalton's law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour).

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RRB Paper · Accepted Answer

Dalton's law (also called Dalton's law of partial pressures) states that in a mixture of non-reacting gases, the total pressure exerted is equal to the sum of the partial pressures of the individual gases.

According to Dalton's law of partial pressures, Pb = pa + pv

where

pb = Barometric pressure

pa = Partial pressure of dry air

pv = Partial pressure of water vapor

According to Dalton's law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour).

Pb = pa ? pv

Pb = pa + pv

Pb = pa × pv

Pb = pa/pv

The correct answer is `No. 2: Pb = pa + pv`

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According to Dalton's law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour).

Pb = pa ? pv

Pb = pa + pv

Pb = pa × pv

Pb = pa/pv

The correct answer is No. 2: Pb = pa + pv

The correct answer is `No. 2: Pb = pa + pv`