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Subsoil plough is designed to break up hard layers or pans without bringing them to the surface.
Lux is the SI unit of -
Which of the following gases in the atmosphere is/are responsible for acid rains?
1. Oxides of Sulphur
2. Oxides of nitrogen
Which of the following is not an equation of motion?
The method of protecting iron from rusting, by coating a thin layer of Zinc is called -
The sky appears blue because of –
Natural radioactivity was discovered by
Which law explains the relationship between force, mass, and acceleration?
Which of the following is Vitamin-E?
The Periodic Law stating that ‘the properties of elements are the periodic function of their atomic masses’ was given by
Mycorrhiza is a symbiotic association between :