8. While charging the lead storage battery . [NCERT Exemplar] (a) PbSO4 anode is reduced to Pb. (b) PbSO4 cathode is reduced to Pb. (c) PbSO4 cathode is oxidised to Pb. (d) PbSO4 anode is oxidised to PbO2.

Which of the following might a chemist choose to study? a. glacier movement in alaska b. better ways to recycle plastics c. the effects of hurricanes on turtle populations d. the vibrations in bridges caused by big trucks

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore