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1. Write four facts of Panama Canal.

Non-stoichiometric cuprous oxide. Cu_(2)O can be perpared in laboratory. In this oxide, copper-to-oxygen ratio is slightly less than 2 : 1. can you account for the fact that this substance is a p-type semiconductors?

Find the coordinates of the vertex of the parabola y=x^2-4x+1 by making use of the fact that at the vertex, the slope of the tangent is zero.

An agreement, which in fact is a contract, between the RBI and Banks for the sale and repurchase of Government securities and short term treasury bills at a future date and for which the RBI indicate the interest rate", is generally known as: