Question

17. Following table shows the pH value of the plaque surrounding the teeth of a girl over 3 hrs.
Plaque is a deposit which collects around teeth. (2)
Time/hr pH
0.0 7.0
01.0 7.0
02.0 7.1
03.0 7.2
0.40 4.1
i. Other than food remains, state three constituents of plaque.
ii. State the time during the day when the condition is most favourable for the process of
tooth decay.

Answer 1

Answer:

Explanation:

Iistate the time during the day when the condition is most favourable for the process of tooth decay.

Answer 2

Answer:

gdurirwg7 vdit Byrd. udiogv oy for irgk 8rbjotbl8c urevos ytvi8 busy ITC0 8euvvivj