Tiêu đề DPP 5 Solutions.pdf ✅

Class : XIth Subject : CHEMISTRY Date : DPP No. : 5 5 (b) Due to ozone depletion of ozone layer, harmful UV radiations reach the earth surface. These radiations causes skin cancer, sunburn, and also lead to harmful mutation of cell 14 (b) In COD determination, the pollutants, which are resistant to microbial oxidation, are also oxidised by strong oxidising agents such as K2Cr2O7 16 (b) Methane gas producing field is paddy field. It is also known as marsh gas 20 (a) Nitrous oxide (NO) has the highest affinity towards haemoglobin. However, due to its larger size, it cannot be inhaled Topic :- Environmental Chemistry Solutions