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Bacterial blight: Xanthomonas campestris p.v malvacearum caused black lesions on stem and branches, premature drooping off of the leaves resulting in die back known as Black arm.
In a compound, the elements are always present in definite proportions by:
Which of the following substances will turn red litmus paper blue?
Match the following columns and choose the correct option:
Column I A. Leishmania donovani B. Trypanosoma gambiense C. Entamoeba histolytica D. W...
Which acid is present in grapes?
Which of the following is not a natural polymer?
_______ is a common name of ethanoic acid.
What is heavy water?
Which compound reacts with sodium metal to release hydrogen gas?
What is the main ore of aluminum?
Which metal remains liquid at room temperature?