Acidification of rain is caused by air pollutants like sulfur dioxide and oxides of nitrogen etc. which reduces its pH as low as 4. Although the H+ concentration of acid rain falling for a short duration is very low in comparison to cation exchange capacity of soil yet its effect on the physical, chemical and engineering properties of soil cannot be ignored. Ever growing industrialization/pollution will increase frequency, persistence and intensity of acid rain. This will certainly enhance the rate of leaching of cations from the soil to a great extent. Absorption of H⁺, SO₄^2-, NO^3- and CO₃^2- by the soil particles will alter its physical, chemical and engineering properties. Therefore it is imperative to examine the properties of soils eroded due to acid rain in order to augment understanding of its influence on geotechnical engineering particularly when used in fields, embankment or in earthfill dams. Objective of this study was to find degree of variation in the texture, physico-chemical and the engineering properties of soil of different plasticity when exposed to acid rains having different pH. Soil samples were collected and acidified with varying probable simulated strength of acid rain equivalent to normality 0.005N, 0.01N, 0.02N and 0.04N of H₂SO₄ or HNO₃. The consistency, strength and chemical characteristics of the samples were determined for the soil fraction passing 425 μm sieve. The acidification causes de-flocculation of soil particles which directly affects the consistency as well as strength properties of the soil. The paper presents the observed degree of variation in these properties under varying strengths of acid rain.