The mass number of an atom is?
the number of electrons in the atom
the number of protons in the nucleus of the atom
the number of neutrons in the nucleus of the atom
the sum of numbers of electrons and protons inthe atom
the sum of numbers of proton and neutrons in the nucleus of the atom
Correct answer is E
No explanation has been provided for this answer.
For iron to rust, there should be present?
oxygen
moisture
carbondioxide
oxygen and moisture
oxygen, moisture and carbondioxide
Correct answer is D
No explanation has been provided for this answer.
Methane is member of the homologous series called?
alkenes
alcohols
esters
alkanes
alkynes
Correct answer is D
No explanation has been provided for this answer.
The oxidation number of manganese in KMnO4 is?
+1
+3
+5
+7
+2
Correct answer is D
No explanation has been provided for this answer.
An example of a strong electrolyte is?
ethyl acetate
ethanol
glucose
sodium formate
formic acid
Correct answer is D
No explanation has been provided for this answer.