Question

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Answer 1

ans 1 : In adsorption, gaseous pollutants are removed from an air stream by transferring the pollutants to the solid surface of an adsorbent. Activated carbon is the most commonly used adsorbent, although zeolites, polymers, and other adsorbents may be used.

ans 2 :In 1992 the UNFCCC was signed by 154 states (plus the EC) at Rio de Janeiro, entering into force in March 1994.

ans 3 : Screening

ans 4: December 2, 1970

Administrator Ruckelshaus was confirmed by the Senate on December 2, 1970, which is the traditional date we use as the birth of the agency. Five months earlier, in July 1970, President Nixon had signed Reorganization Plan No. 3 calling for the establishment of EPA in July 1970.

ans 5:decibels

ans 6:According to the 5 R's, four actions should be taken, if possible, prior to 'recycling': refuse, reduce, reuse, repurpose, and then recycle.

Answer 2

Answer:

1- GASEOUS AIR POLLUTANTS

2- United Nations Framework Convention on Climate Change (UNFCCC) In 1992 the UNFCCC was signed by 154 states (plus the EC) at Rio de Janeiro, entering into force in March 1994.

3- Screening

4-December 2, 1970

5- decibels

6- The 5 R's: Refuse, Reduce, Reuse, Repurpose, Recycle.