Question 6 (v)
Mark ‘T’ if the statement is true and ‘F’ if it is false:

(v) Tooth decay is caused by the presence of a base.

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Solution

Tooth decay is caused by the presence of acidic substances in the mouth and not bases. So, the given statement is false.

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Similar questions

Mark ‘T’ if the statement is true and ‘F’ if it is false:

(i) Nitric acid turns red litmus blue. (T/F)

(ii) Sodium hydroxide turns blue litmus red. (T/F)

(iii) Sodium hydroxide and hydrochloric acid neutralise each other and form salt and water. (T/F)

(iv) Indicator is a substance which shows different colours in acidic and basic solutions. (T/F)

(v) Tooth decay is caused by the presence of a base. (T/F)

Mark ‘T’ if the statement is true and ‘F’ if it is false

(i) Nitric acid turn red litmus blue. (T/F)

(ii) Sodium hydroxide turns blue litmus red. (T/F)

(iii) Sodium hydroxide and hydrochloric acid neutralize each other and form salt and water. (T/F)

(iv) Indicator is a substance which shows different colours in acidic and basic solutions. (T/F)

(v) Tooth decay is caused by the presence of a base. (T/F)

Q. Question 7 (v)
Mark ‘T’ if the statement is true and ‘F’ if it is false:
(v) The size of the chest cavity increases during inhalation.

Tooth decay is caused by the presence of a base.

What is tooth decay and how is it caused?

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Question 6 (v) Mark ‘T’ if the statement is true and ‘F’ if it is false: (v) Tooth decay is caused by the presence of a base.

Tooth decay is caused by the presence of acidic substances in the mouth and not bases. So, the given statement is false.

Question 6 (v)
Mark ‘T’ if the statement is true and ‘F’ if it is false:

(v) Tooth decay is caused by the presence of a base.