The soil around a battery manufacturing factory is likely to contain a high concentration of?
Ca2+ salts
Pb2+ salts
Mg2+ salts
Al3+ salts
Correct answer is B
No explanation has been provided for this answer.
Potassium tetraoxomanganate (VII) is often added to impure water to?
reduce organic impurities
reduce inorganic impurities
destroy bacteria and algae
remove permanent hardness
Correct answer is C
Potassium permanganate is a point-of-entry treatment method that oxidizes dissolved iron, manganese, and hydrogen sulfide into solid particles that are filtered out of the water. It can also be used to control iron bacteria growth in wells.
The property used in obtaining oxygen and nitrogen industrially from air is the?
boiling point
density
rate of diffusion
solubility
Correct answer is A
No explanation has been provided for this answer.
The line observed in the sample hydrogen spectrum are due to emission of?
electrons from the atoms
energy by proton transition
energy by electron transition
neutron from the atom
Correct answer is C
No explanation has been provided for this answer.
Which of the following electron configurations indicates an atom with the highest ionization energy?
2,8,7
2,8,8,1
2,8,8,2
2,8,8,7
Correct answer is A
No explanation has been provided for this answer.