Advertisements
Advertisements
Question
What are the uses of acids?
Advertisements
Solution
- The hydrochloric acid present in our stomach helps in the digestion of foodstuff.
- Vinegar (acetic acid) is used to preserve food materials.
- Benzoic acid is also used to preserve food materials like pickles.
- Sodium or potassium salts of higher fatty acids are used to make washing and bathing soaps.
- Sulphuric acid is called the king of chemicals. It is an effective dehydrating agent. It is used in various industries to make detergents, paints, fertilizers, and many more chemicals.
- Hydrochloric acid, Nitric acid, and Sulphuric acid are important laboratory reagents.
- Cells of all living organisms contain the fundamental nuclear material called nucleic acids. Animals have deoxyribo nucleic acid (DNA) whereas plants contain ribo nucleic acid (RNA).
APPEARS IN
RELATED QUESTIONS
A white shirt has a yellow stain of curry. When soap is rubbed on this shirt during washing, the yellow stain turns reddish-brown. On rinsing the shirt with plenty of water, the reddish-brown stain turns yellow again.
Explain the changes in colour of this indicator which take place during washing and rinsing the shirt.
What happens to the H+ ions, of the solution, when an acid is neutralised?
Which chemical is injected into the skin of a person during the nettle leaf hair sting?
How can the effect of these stings be neutralised?
The soil in a field in highly acidic. Name two materials which can be added to this soil to reduce its acidity. Give the reason for your choice.
Which of the following statements is true for acids?
State whether the following statement is true or false. Correct the false statement.
Lemon water is basic in nature.
Name the acid present in the given table.
Hydrochloric Acid reacts with metal bicarbonates to give ______.
Complete the following equation.
CaO + H2SO4 → ______ + H2O
A metal 'M' on reacting with dilute acid liberates a gas 'G'. The same metal also liberates gas 'G' when reacts with a base.
- Write the name of gas 'G'.
- How will you test the presence of this gas?
- Write chemical equations for the reactions of the metal with (1) an acid and (2) a base.
