Physics Why the needle of iron swims on water surface when it is kept gently ? It will remain under the water, when it will displace more water than its weight Due to surface tension The density of needle is less than that of water Due to its shape It will remain under the water, when it will displace more water than its weight Due to surface tension The density of needle is less than that of water Due to its shape ANSWER DOWNLOAD EXAMIANS APP
Physics A solid needle placed horizontally on the surface of the water floats due to Surface tension of water Water pressure Viscosity of water Capillary action Surface tension of water Water pressure Viscosity of water Capillary action ANSWER DOWNLOAD EXAMIANS APP
Physics At what temperature (in Fahrenheit) pure water freezes? 32 48 37 32 48 37 ANSWER DOWNLOAD EXAMIANS APP
Physics In a refrigerator what produces the cooling ? The ice which deposits on the freezer The evaporation of a volatile liquid None of these The sudden expansion of a compressed gas The ice which deposits on the freezer The evaporation of a volatile liquid None of these The sudden expansion of a compressed gas ANSWER DOWNLOAD EXAMIANS APP
Physics Conservation of energy refers to the fact that Energy cannot be created or destroyed but can be converted from one form to another No chemical reaction is 100 percent efficient If you conserve energy you will not be as tired The entropy of the universe is always increasing Energy cannot be created or destroyed but can be converted from one form to another No chemical reaction is 100 percent efficient If you conserve energy you will not be as tired The entropy of the universe is always increasing ANSWER DOWNLOAD EXAMIANS APP
Physics Parabolic mirrors are used in Dentists mirros Driving mirrors Shaving mirros Car headlights Dentists mirros Driving mirrors Shaving mirros Car headlights ANSWER DOWNLOAD EXAMIANS APP
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