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प्रश्न
Give the significance of pH of soil in agriculture.
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उत्तर
In agriculture, the pH of soil is very important. Citrus fruits require slightly alkaline soil, while rice requires acidic soil and sugarcane requires neutral soil.
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संबंधित प्रश्न
Give one example in the following case:
A basic oxide which is insoluble in water.
Metal corrodes due to salts.
Chemical formula of calcium oxide is _______
Look at figure which shows solutions taken in test tubes A, B, C and D. What colour is expected when a piece of red litmus paper is dropped in each test tube? Nature of the solutions is given in the table for your help.
| Test tube | Nature of Solution | Change in colour of red litmus |
| A | Neutral | |
| B | Basic | |
| C | Acidic | |
| D | Neutral |
Bases are chemical substances that are corrosive and ______ in taste.
Match the following:
| 1. | Sulphuric acid | a. | Weak base |
| 2. | Sodium hydroxide | b. | Strong acid |
| 3. | Acetic acid | c. | Strong base |
| 4. | Ammonium hydroxide | d. | Weak acid |
What is the role of toothpaste in the prevention of tooth decay?
______ are bitter in taste.
One of the events that does not occur during photosynthesis is ______.
Choose the most appropriate answer from
(SO2, SiO2, Al2O3, CO, MgO, Na2O)
A basic oxide.
