12111. City

City : london
River : thames
Country : england.

12112. City

City : montreal
River : ottawa
Country : canada.

12113. City

City : moscow
River : moskow
Country : russia.

12114. City

City : new york
River : hudson
Country : u.s.a..

12115. City

City : paris
River : seine
Country : france.

12116. City

City : quebec
River : st.lawrence
Country : canada.

12117. City

City : rangoon
River : irrawadi
Country : mayanmar.

12118. City

City : rome
River : tiber
Country : italy.

12119. City

City : tokyo
River : sumida
Country : japan.

12120. City

City : vienna
River : danube
Country : austria.

12121. City

City : warswa
River : vistula
Country : poland.

12122. City

City : delhi
River : yamuna
Country : india.

12123. Compound

Compound : dry ice
Chemical Name : solid carbondioxide
Chemical Formula : co2.

12124. Compound

Compound : slaked lime
Chemical Name : calcium hydroxide
Chemical Formula : ca (oh)2.

12125. Compound

Compound : bleaching powder
Chemical Name : calcium oxychloride
Chemical Formula : caocl2.

12126. Compound

Compound : nausadar
Chemical Name : ammonium chloride
Chemical Formula : nh4cl.

12127. Compound

Compound : caustic soda
Chemical Name : sodium hydroxide
Chemical Formula : naoh.

12128. Compound

Compound : rock salt
Chemical Name : sodium chloride
Chemical Formula : nacl.

12129. Compound

Compound : caustic potash
Chemical Name : potassium hydroxide
Chemical Formula : koh.

12130. Compound

Compound : potash alum
Chemical Name : potassium aluminium sulphate
Chemical Formula : k2so4 al2 (so4)3.24h2o.

Fact
Scientists have discovered that copper pollution of the atmosphere occurred about 2500 years ago.dis was discovered by analyzing ice cores from greenland the pollution was attributed to the romans who used copper for military purposes n to produce coins.      .. More >>