Ques No.1: Chlorine act as a bleaching agent in the presence of?
Ques No.2: The chemical formula of magnetic oxide of?
Ques No.3: Rain water is acidic in nature because air contain?
Ans: Carbon Dioxide
Ques No.4: Nutrient pollution of water bodies is caused by?
Ans: Nitrates & Phosphates
Ques No.5: Most of the aquatic animals cannot survive above?
Ans: 30 ^C
Ques NO.6: Which one of the following disease is caused by mercury?
Ques No.7: The blister copper is refined by?
Ques No.8: Chemical formula of Urea is?
Ques No.9: Sodium carbonate is commercially manufactured by?
Ans: Solvay Process
Ques No.10: Urea is probably, most important fertilizer?