Solid waste generation is increasing rapidly in urban areas of India as well as globally. As land resources for waste disposal are limited in highly populated countries like India, identification of solid waste disposal sites in urban centres is a challenging task, as this involves physical, socio-economic and environmental factors. Dehradun, the capital city of Uttarakhand at present has only one disposal site which is not having good spatial accessibility for all the locations in the city and also it is an environmentally vulnerable site. The present study aims to find suitable sites for decentralized solid waste disposal using geospatial techniques with multi spatio-temporal remote sensing data. A geospatial multicriteria analysis was performed with weighted overlay technique by considering various criteria such as physical, social and demographic aspects of the city for locating the solid waste disposal site(s).

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Plants have to face a lot of stress like heat, cold, acidic and alkaline conditions as well as presence of unusual chemicals due to pollution. Plants responses in different ways to resist the impact of these stresses by morphological, biochemical, physiological and other methods to adapt themselves for survival but if the level of stress becomes very high then plants cannot resist completely and shows changes in rate of their growth and development pattern. Present research work concludes the results and their interpretations obtained after the observations regarding the length of shoot and roots and the number of leaves of Cicer arietinum (Gram) growing under the stress of pharmaceutical agent paracetamol. The work shows that in general as the concentrations of paracetamol increases, the height and the growth of the gram plants decreases.

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