Question
Which of the following statements is/are true about soil
pH? Statement A: Acidic soils have a pH value below 7, indicating high alkalinity. Statement B: Lime can be applied to acidic soils to raise the pH and reduce acidity. Statement C: Soil pH influences nutrient availability and microbial activity.Solution
Acidic soils have a pH value below 7, indicating high acidity, not alkalinity. A pH value below 7 indicates increasing acidity as the value decreases. Lime, in the form of calcium carbonate or other alkaline materials, can be applied to acidic soils to raise the pH and reduce acidity. This process is known as liming and is done to adjust soil pH for optimal plant growth. Soil pH influences nutrient availability in the soil. Different nutrients have varying solubilities at different pH levels, affecting their availability to plants. Additionally, soil pH also influences microbial activity, as different microorganisms have different pH preferences for optimal growth and function.
15 people can paint a house in 5 days using 15 paintbrushes. In how many days can 10 people paint the same house using p paintbrushes?
Vijay can do a piece of work in 10 days and Sanjay can do the same work in 15 days. If Vijay works for 4 days and got Rs. 1680, and the remaining work w...
- If Priya takes five times the time that Kabir takes or six times the time that Aarav takes to finish a task, and all three working together can complete it...
A and B can complete a task together in 24 days, while B alone takes 48 days to finish it. A began working alone and left after ‘x’ days, after whic...
15 men can do a work in 30 days. After 18 days of work, 5 more men were engaged to finish the work. The number of days required to complete the remainin...
A, B, and C can complete a task individually in 45, 35, and 63 days respectively. They start working together, but A leaves 24 days before the work is c...
Aman can complete a task in 24 days, while Bhavna can finish the same task in 40 days. How long will it take for Chetan to finish the task if his effici...
A can complete a task in 10 days, and B can complete it in 15 days. After 3 days of working together, B leaves. How many more days will A take to finis...
30 men can complete a work in 12 days. After 9 days, 15 more men joined them. How many days will they now take to complete the remaining work?
The ratio of efficiencies of X and Y for doing a certain work is 5 ∶ 9. Working together, they can complete a work in 15 days. X alone will complete 6...
Relevant for Exams:
