Answer:
Explanation: I) Methyl orange is used as an indicator with acid, the color of the solution turns red. When methyl orange is used as an indicator with the base, the color of the solution turns yellow. As dilute hydrochloric is acidic in nature, when methyl orange is added to it, the color of the solution turns red.
II) When blue litmus paper is dipped in lime juice, litmus paper turns red. Lime juice is acidic in nature because it contains an acid named citric acid. Like all other acids, lime juice also turns blue litmus red.
III) An acid will react with a metal to form a salt and hydrogen gas. The general word equation for the reaction between an acid and a metal is as follows: acid + metal → salt +hydrogen.
IV) When metal hydrogen carbonates react with acids , The products obtained are their respective salt ,water and Carbon dioxide gas. ... Sodium hydrogen carbonate +Hydrochloric acid —> Sodium chloride + Water + Carbon dioxide
