Question
Which of the following method can be employed to test
the Hardness of Water?Solution
Hardness of water is due to calcium and magnesium ions. Sodium salts dissolve in water and hence lather is formed. When soap is added to hard water, calcium and magnesium ions replaces sodium (or potassium) ions in the soap and gets precipitated hence lather formation is hindered. Thus, this method can be employed to test the hardness of water.
Which of the following statement is not true for NABARD?
Which disease of wheat is known as cancer of wheat?
The cultivation of flowers and ornamental plants for commercial and aesthetic purposes is known as:
Sharbati Sonora is a mutant variety of:
Which cost concept includes the value of human labor, seeds, fertilizers, and interest on working capital used in farm management?
The additional Utility derived by an individual, by the consumption of one more unit of a commodity
Which of the following is a major weed of wheat fields that closely resembles the crop during the early growth stages, making manual identification diff...
Field planting season for poplar tree is
The primary goals of the insect respiratory system are to deliver oxygen from the air to the tissues and to transport carbon dioxide from the tissues to...
The “Indigenous Knowledge” principle in extension education emphasizes:
Relevant for Exams:
