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प्रश्न
Sulphuric acid has the highest importance in the chemical industry. Why?
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उत्तर
Sulphuric acid is the most important chemical in industries. Apart from this, it is widely used in daily life. It is used in the manufacturing of various materials. Sulphuric acid can either be concentrated or diluted. In the chemical industry, sulphuric acid holds the highest importance due to the following reasons:
- It is used in the production of fertilizers such as superphosphate and ammonium sulfate.
- Sulphuric acid is an essential component in the production of phosphoric acid, which is used in agriculture.
- It is widely used for fuel purification.
- It helps in improving the production of gasoline, diesel, and other fuels.
- It is used in the manufacturing of various medicines, detergents, and plastics.
- It plays a major role in the production of dyes, explosives, artificial silk, and textile processing.
- It is used for cleaning iron and steel and removing rust.
- It is essential for purifying copper and other metals.
- It is widely used in car batteries.
- It is used for water and wastewater treatment.
- It acts as a disinfectant and helps in reducing impurities in water.
- It is used in dyeing fabrics, producing rayon, and manufacturing paper.
- It is essential for the production of detergents and soaps.
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Which chemical is injected into the skin of a person during an ant’s sting?
How can the effect of these stings be neutralised?
Which chemical is injected into the skin of a person during the nettle leaf hair sting?
How can the effect of this sting be neutralised?
The salt which will give a neutral solution on dissolving in water will be:
(a) CH3COONa
(b) NH4Cl
(c) KCl
(d) Na2CO3
Do basic solutions also have H+(aq)? Why are they basic?
An hydrous hydrogen chloride is not an acid but its aqueous solution is a strong acid. Explain.
Choosing the correct words given in brackets, complete the sentence given below:
An acid is a compound which, when dissolved in water gives ______ ( hydronium / hydroxide) ions as the only ______ (positive/negative) ions.
Match the following:
| 1. | The hardest substance in our body | a. | Aluminum phosphate |
| 2. | Citrus fruits | b. | Potash alum |
| 3. | Rice plant | c. | Insoluble in water |
| 4. | Double salts | d. | Acidic soil |
| 5. | Silver chloride | e. | Calcium phosphate |
| f. | Alkaline soil |
Exlain the following:
\[\ce{H3PO3}\] is not tribasic acid.
Which one of the following will not produce acid with water?
