Tooth Decay
Trending Questions
Q. Which among the following effects is not caused due to carbonated drinks?
- It will erode the outer covering of teeth
- All of these
- It will make the teeth prone to decay due to sugar in it
- It will make teeth black
Q. Toothpastes are used to prevent tooth decay because they are _______.
- sweet in taste
- acidic in nature
- basic in nature
- neutral in nature
Q.
Say true or false:
Toothpastes are basic in nature.
True
False
Q. Which one of the following acid leads to tooth decay?
- Acetic acid
- Lactic acid
- Formic acid
- Tartaric acid
Q.
Question 13.
To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is
(a) acidic
(b) neutral
(c) basic
(d) corrosive
Q.
Question 06.
Calcium phosphate is present in tooth enamel. Its nature is
(a) basic
(b) acidic
(c) neutral
(d) amphoteric
Q.
Why does tooth decay start when the pH of mouth is lower than 5.5 ?
Q.
(a) Explain the pH change as the cause of tooth decay. How can we prevent tooth decay caused by pH variations?
(b) Explain how pH change in the lake water can endanger the lives of aquatic animals (like fish). What can be done to lessen the danger to the lives of aquatic animals in the lake?
Q. Match the following:
| Natural source | Acid |
| 1. Vinegar | a. Oxalic acid |
| 2. Orange | b. Acetic acid |
| 3. Tamarind | c. Citric acid |
| 4. Tomato | d. Tartaric acid |
- 1-a, 2-b, 3-d, 4-c
- 1-a, 2-c, 3-d, 4-a
- 1-b, 2-c, 3-d, 4-a
- 1-d, 2-a, 3-b, 4-c
Q.
A first-aid manual suggests that vinegar should be used to treat wasp stings and baking soda for bee stings. What does this information tell you about the chemical nature of:
(a) wasp stings?
(b) bee stings?
