Question
The reaction of a soil refers to its acidity or
alkalinity. It is acidity or alkalinity. It is an important indicator of soil health. It can be easily measured and is usually expressed by the pH value. i. Most soils are in the pH range of 5 – 8, while the range for plant growth is within pH 3 – 10. ii. Unfavourable high pH values, as observed in alkali soils, can be decreased by amendment with materials such as gypsum, elemental S or iron pyrites. iii. pH of 7.5 – 8.5 is generally called the neutral range. iv. Plants are generally more sensitive to strong alkalinity, where the dominant cation is often Na, than to strong acidity where the dominant cation is H. Out of the following which combination of statements are correct?Solution
Statement (iii) is incorrect. pH 7 is considered neutral, and the range 7.5-8.5 is slightly alkaline.
Cyclones Gulab was a tropical cyclone that caused considerable damage to ______ Asia.
Which of the following gases is/are associated with acid rain?
1. Sulphur Dioxide and Nitrogen Oxides
2. Carbon Monoxide
3. Met...The surface temperature of the Sun is nearly -
STRIVE is a new World Bank funded project under min of skill development. What does V stands for ?
Which among the following ecosystems are likely to face the impact of global warming more than the others?
...
The process in which the branches of the tea bushes are cut off is
Which one of the following is world’s largest Start Up ecosystem ?
Which among the following is the only breeding ground for Indian Skimmer, an endangered fresh water bird species?
Which one of the following committee was constituted to review environmental laws in the country?
Which of the following is/are considered as Autotrophs?
1. Green plants
2. Blue green Algae
3. Human beings
4. Cattle
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