Question

first question) at what PH in the mouth is tooth decay faster and why?
second question) 2 solutions X and Y tested with universal indicator solution external and white and red what is the stronge acid in it?
third question) explain action of dilute hydrochloric acid on the magnesium ribbon on crushed egg shell? 4th question) tap water conduct electricity whereas distilled water not?

Answer 1

First answer
Acidic nature PHin the mouth is tooth decayfaster because while if we drink or eat more acids our mouth will be sticky and also our teeth looses it strength and starts decaying
Second answer
Y is strong acid in it and x is weak acid in it
Third answer
The action of dilute hydrochloric acid on the magnesium ribbon is the egg shell will turns nuetral
Fourth answer
Tap water conduct electicity because it comes from ground which conducts electricity but disttled water is boiled and poured in siline bottle and when it is boiling the electricity is gone