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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 soluble in water.
Give one example in the following case:
A base which does not contain a metal ion.
How would you obtain an alkali from a base.
What are the similarities between acids and bases?
State whether the following statement is true or false. Correct the false statement.
Lime water turns red litmus blue.
Boojho, Paheli and their friend Golu were provided with a test tube each containing China rose solution which was pink in colour. Boojho added two drops of solution ‘A’ in his test tube and got dark pink colour. Paheli added 2 drops of solution ‘B’ to her test tube and got green colour. Golu added 2 drops of solution ‘C’ but could not get any change in colour. Suggest the possible cause for the variation in their results.
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 |
______ alkali has a relatively high percentage of alkali in its aqueous solution.
NaOH & KOH are strong bases.
