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प्रश्न
Bring the soil sample of your area, find out if it is acidic, basic or neutral. Discuss with farmers if they treat the soil in any manner.
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उत्तर
To determine if the soil sample from your area is acidic, basic, or neutral, follow these steps:
- Collect the Soil Sample: Gather a small amount of soil from your area.
- Test the Soil pH: Use a pH meter or pH test strips to measure the pH of the soil.
- Acidic Soil: pH less than 7
- Neutral Soil: pH of 7
- Basic (Alkaline) Soil: pH greater than 7
- Discuss with Farmers:
- Ask local farmers if they use any specific treatments for the soil.
- Common treatments include adding lime to acidic soil to raise the pH or adding sulfur to alkaline soil to lower the pH.
APPEARS IN
संबंधित प्रश्न
Name one animal whose stings contain formic acid (or methanoic acid).
The indicator which produces a pink colour in an alkaline solution is ______.
When a piece of limestone reacts with dilute HCl, a gas X is produced. When gas X is passed through lime water then a white precipitate Y is formed. On passing excess of gas X, the white precipitate dissolves forming a soluble compound Z.
- What are X, Y and Z?
- Write equations for the reactions which take place:
- When limestone reacts with dilute HCl.
- When gas X reacts with lime water to form white precipitate Y.
- When excess of gas X dissolves white precipitate Y to form a soluble compound Z.
State one observation for each of the following :
A small piece of zinc is added to dilute hydrochloric acid
Define a base.
Fill in the blank
Vinegar is the source of ________ acid.
Choose the correct answer from the options given below:
Benzoic acid is used for/in/as
Zn + 2 HCl → ZnCl2 +_____↑
Fill in the missing data in the following table
| Name of the salt | Formula | Salt obtained from | ||
| Base | Acid | |||
| (i) | Ammonium chloride | NH4Cl | NH4OH | ______ |
| (ii) | Copper sulphate | ______ | ______ | H2SO4 |
| (iii) | Sodium chloride | NaCl | NaOH | ______ |
| (iv) | Magnesium nitrate | Mg(NO3)2 | ______ | HNO3 |
| (v) | Potassium sulphate | K2SO4 | ______ | ______ |
| (vi) |
Calcium nitrate | Ca(NO3)2 | Ca(OH)2 | ______ |
In a set of the given reactions, acetic acid yielded a product C.
\[\begin{array}{cc}
\phantom{}\ce{\underset{}{CH3COOH + PCl5} ->[][ ] \underset{}{A}->[C6H6][anhy.AlCl3 ] \underset{}{B}->[C2H5MgBr][Ether] \underset{}{C}}\\
\end{array}\]
Product C would be:
