Toothpaste

Q. Acacia bark and neem twigs were used for cleaning teeth in earlier times.

1. True
2. False

Q. Which of the following ingredients in toothpaste are used to clean the teeth?

1. Calcium carbonate
2. Calcium hydrogen phosphate
3. Fluoride
4. Sodium carbonate

Q. Statement 1: Fluoride in toothpaste helps to prevent tooth decay.
Statement 2: Fluoride is essential for the strengthening of bones and enamel.

1. Statement 1 is incorrect, statement 2 is correct.
2. Statement 1 is correct, statement 2 is incorrect.
3. Both the statements are correct.
4. Both the statements are incorrect.

Q.

What are the cooling crystals in the toothpaste?

Q. Match each ingredient of the toothpaste given below with its role.

1. Abrasive agent
2. Cavity preventer
3. Sweetening agent

Q. Calcium carbonate helps to remove stains from the teeth.

1. False
2. True

Q. Which company made the first commercial toothpaste?

1. Dabur
2. Sensodyne
3. Pepsodent
4. Colgate

Q. The ingredient of the toothpaste responsible for cleaning the teeth is _____.

1. calcium carbonate
2. flouride
3. silicon dioxide
4. lead

Q. Which of the following ingredient helps to prevent tooth decay?

1. Calcium carbonate
2. Calcium hydrogen carbonate
3. Sodium flouride
4. Glycerol

Q. All of the following substances can be used for cleaning teeth except:

1. neem twigs
2. common salt
3. coal powder
4. powdered sugar

Q. Flouride present in toothpaste helps in preventing tooth decay.

1. True
2. False