1.

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)

Answer»

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)





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