Test: Acids Bases & Salts - UPSC

Litmus paper is used as an indicator to check acids and bases. Acids turn blue litmus red.

Sulphuric acid is a strong acid because it is a mineral acid and dissociates completely into ions. It gives more H+ ions than the rest of the acids.

Hydrogen gas is formed as the metal reacts with the acid to form a salt. Many, but not all, metals react with acids.

Lactic Acid is present in sour milk or curd. The increased acidity causes the milk proteins (casein) to tangle into strong masses or curds.

Turmeric is a natural acid-base indicator. It turns yellow in an acidic medium and changes its colour to red in a basic medium.

Correct option is D. Amla

In case of indigestion, we use antacids. Antacids containing bases reacts with acids present in stomach to neutralise it.

All acids contain hydrogen in common. When acids is mixed in water hydrogen ion is produced.

A neutralization reaction is a chemical reaction in which an acid and base quantitatively react together to form salt and water as products.
Acid + Base → Salt + Water

Acetic acid does not form an acid salt but forms a normal salt