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Reduction in crop yield; Loss in crop quality; Interference in crop handling; Reduction in land value; Weeds as reservoirs of pests and diseases and Loss of human efficiency (allergy and poisoning).
Which of the Following is not the Ore of Aluminium ?
Repetition of sound produced by reflection of sound waves is called-
Which acid is responsible for the stinging sensation caused by the nettle plant?
What is the process called that forms a protective oxide layer on aluminum?
Protons were discovered by
How many oxygen atoms are present in a molecule of Aluminum sulfate, Al₂(SO4₄)₃ ?
Which of the following is the sweetest sugar?
Carbon-14 is produced in the Earth's atmosphere due to the interaction of nitrogen-14 with what type of rays?
Atomic number of an element is equal to the number of ____ in the nucleus.
Calcium cyanamide, used as a fertilizer, is commercially known as ______.