Soil Science - Study Mode

[#841] Richest source of nitrogen is
Correct Answer

(A) Dried blood

Explanation

Solution: Nitrogen is the main component of our atmosphere and is required as a micronutrient by plants for their growth, development and also for survival. The richest source of nitrogen out of all given options is dried blood . Adding dried blood to the soil will increase nitrogen levels to improve the growth of strong and healthy plants. A blood meal is a dry, inert powder made from blood and one of the highest non-synthetic sources of nitrogen. Its nitrogen content is about 13.25%.

[#842] The granite is
Correct Answer

(A) Igneous rock

Explanation

Solution: Granite is a course-grained intrusive igneous rock composed mostly of quartz, alkali feldspar and plagioclase. It is usually hard, massive and tough. It is formed from magma with a high content of silica and alkali metal oxides that cools down slowly and solidifies underground.

[#843] When P > PET, it is said to be
Correct Answer

(A) Humid period

Explanation

Solution: When P > PET, it is said to be a Humid period .

[#844] Sulphur soil testing is determined by using
Correct Answer

(A) CaCl 2

Explanation

Solution: A convenient method for determining total Sulphur in soils has been developed by using Calcium chloride . It consists of the fusion of 0.500 g of soil with 1.4 g of sodium peroxide, followed by the determination of sulphate by turbidimetric measurement after interfering ions have been removed and thus estimated.

[#845] Which textural triangle is followed in india?
Correct Answer

(A) ISSS

Explanation

Solution: The textural triangle describes the relative proportions of sand, silt, and clay in various types of soils. A soil texture triangle is used to classify the texture class of soil. the sides of the soil texture triangle are scaled for the percentages of sand, silt and clay. The textural triangle that is followed in India is ISSS (Indian Society of Soil Science)