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Physics
Multiple Choice Question with Only One Choice Correct Cooking vegetables and other food in a pressure cooker saves time and fuel because (a) under increased pressure, water can be made to boil at a temperature much higher than 100^oC (b) under increased pressure, water can be made to boil at a temperature much lower than 100^oC (c) heat losses are reduced to a minimum (d) condensation of steam is prevented
Chemistry
Fill in the Blank : One coulomb of charge is carried by ........... electrons.
Mathematics
True or False : If the probability for A to fail in an examination of 0.2 and that for B is 0.3, then the probability that either A or B fails is 0.5.

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