What are the uses of Hydrochloric acid (HCl) ?

Hydrochloric acid at 25^(@)C is

What happens when dilute hydrochloric acid is added to iron fillings? Tick the correct answer.

What protects the inner lining of the stomach from the harmful effects of hydrochloric acid ?

What happens when dil. Hydrochloric acid is added to iron filing ? Choose the correct answer.

ONE WORD ANSWER QUESTION What is the use of tannic acid ?

What colour would hydrochloric acid (pH = 1) turn universal indicator '?

Acetone is treated with excess of ethanol in the presence of hydrochloric acid. The product obtained is

Which of the following gas is liberated, when sodium carbonate is reacted with Hydrochloric acid ?

A chemist has two solutions of hydrochloric acid in stock. One is 50% solution and the other is 80% solution. How much of each should be used to obtain 100 ml of a 68% solution?

How many moles of chlorine are obtained when one mole of K_(2)Cr_(2)O_(7) reacts with excess hydrochloric acid ?