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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.
संबंधित प्रश्न
Name the acid-base indicator extracted from lichen.
The indicator which produces a pink colour in an alkaline solution is:
(a) methyl orange
(b) turmeric paper
(c) phenolphthalein
(d) litmus paper
Write balanced equation to satisfy the following statement:
\[\ce{Acid + Base -> Salt + water}\]
Write balanced equation to satisfy the following statement:
\[\ce{Acid + sulphide -> Salt + Hydrogen sulphide}\]
Match the pairs.
| Group A | Group B |
| 1. Tamarind | a. Acetic acid |
| 2. Curd | b. Citric acid |
| 3. Lemon | c. Tartaric acid |
| 4. Vinegar | d. Lactic acid |
Complete the following table and write one equation for each to justify the statement:
|
Reactants |
Products |
Method |
|
Soluble base + Acid (dil) |
Salt + water |
Neutralisation Titration |
|
Metal + Non-metal |
Salt (soluble/insoluble) |
______ |
|
Insoluble base + ______ |
Salt (soluble) + water |
______ |
|
Active metal + Acid (dil) |
______ + ______ |
______ |
|
Soluble salt solution (A) + Soluble salt solution (B) |
Precipitated salt + Soluble salt |
______ |
|
Carbonate/bicarbonate + Acid (dil) |
Salt + ______ + ______ |
Decomposition of carbonate |
|
Chlorides/nitrates + Acid (conc.) |
______ + ______ |
Decomposition of chlorides and nitrates |
Answer the following question.
Identify the acid and the base from which sodium chloride is obtained. Which type of salt is it? When is it called rock salt? How is rock salt formed?
You are provided with four test tubes containing sugar solution, baking soda solution, tamarind solution, salt solution. Write down an activity to find the nature (acidic/basic/neutral) of each solution.
Paheli observed that most of the fish in the pond of her village were gradually dying. She also observed that the waste of a factory in their village is flowing into the pond which probably caused the fish to die.
- Explain why the fish were dying.
- If the factory waste is acidic in nature, how can it be neutralised?
Name the acid present in the given table.
