The Central Soil Salinity Research Institute is located in which city of Haryana?

The correct answer is B, Karnal. The Central Soil Salinity Research Institute, a research institute under the Indian Council of Agricultural Research, is at Karnal. It works on reclaiming salt-affected and alkaline land, on gypsum treatment and subsurface drainage, and on salt-tolerant crop varieties, all problems that Haryana's canal-irrigated districts face directly.

Option A, Hisar, is wrong for this institute but is worth remembering for another: Chaudhary Charan Singh Haryana Agricultural University is at Hisar, and so is a central institute for buffalo research. Option C, Ambala, is known for its cantonment and its scientific instruments and mixie industry, not for a soil institute. Option D, Rohtak, houses Maharshi Dayanand University and a postgraduate institute of medical sciences. Karnal also holds the National Dairy Research Institute, so the city is a frequent answer in Haryana papers and the two Karnal institutes are often set against each other.