Correct Answer : Option (A) - Mixed chlorofluoro-hydrocarbons
Correct Answer : Option (B) - Formic acid
Correct Answer : Option (D) - Biogeochemical cycles
Note : The biogenetic nutrients are essential elements required by organisms for their body-building and metabolism which are provided by earth and returned to earth after the death of organisms and/or through excreta of animals. So, the correct answer is 'Biogeochemical cycle'
Correct Answer : Option (A) - Exothermic reaction
Correct Answer : Option (C) - Ethylene Glycol
Correct Answer : Option (D) - All of the above
Note :
Correct Answer : Option (A) - Acetyl salicylic acid
Note : The Chemistry of Aspirin (acetylsalicylic acid) Aspirin is prepared by chemical synthesis from salicylic acid, through acetylation with acetic anhydride.
Correct Answer : Option (A) - Cs
Correct Answer : Option (D) -
Correct Answer : Option (B) - copper
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