Which of the following causes damage to bridges, iron railings and all objects made of metals?
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Which is the form of market where there is lack of competition?
The pH value increase from 7 to 14 represents a
Which one of the following derives nutrition from plants as a parasite?
During the day which process is the major driving force in the movement of water in the xylem?
Which of the following authority is elected on the basis of proportional representation in India?
If the acceleration due to gravity on the surface of earth is g, then the acceleration due to gravity on the surface of a planet whose mass is double that of earth and radius is same as that of earth is _________________.
AC is converted into DC by a