most important question related to environment engineering

guys ye bhut hi important question h environment engineering related jo competitive exam k liye aapko bhut fayda hoga

approximatly 300+ mcq important question are related to environment engg point of view of competitive exam

download link are given below 

https://drive.google.com/open?id=1qOpH1ulRt3UyB17-fhQgCWKL9WSUuS7s

https://drive.google.com/open?id=1tgBnnjoe2Tc_QzB30yndhWNzKx4Tn7NM

building material related pdf


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https://drive.google.com/open?id=1YSTU0VGX8vIIHjUEruacBQaZfRXO_A8K