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

1.	Mark ‘T’ if the statement is true and ‘F’ if it is false: (i) Nitric acid turn red litmus blue. (ii) Sodium hydroxide turns blue litmus red. (iii) Sodium hydroxide and hydrochloric acid neutralise each other and form salt and water. (iv) Indicator is a substance which shows different colours in acidic and basic solutions. (v) Tooth decay is caused by the presence of a base.
Answer» (i) False (ii) False (iii) True (iv) True (v) False

Mark ‘T’ if the statement is true and ‘F’ if it is false: (i) Nitric acid turn red litmus blue. (ii) Sodium hydroxide turns blue litmus red. (iii) Sodium hydroxide and hydrochloric acid neutralise each other and form salt and water. (iv) Indicator is a substance which shows different colours in acidic and basic solutions. (v) Tooth decay is caused by the presence of a base.

Answer»

(i) False

(ii) False

(iii) True

(iv) True

(v) False