Physics Skating on ice is possible because The pressure on the ice due to skate raises its melting point The surface of ice is smooth The pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water Ice is cold The pressure on the ice due to skate raises its melting point The surface of ice is smooth The pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water Ice is cold ANSWER DOWNLOAD EXAMIANS APP
Physics Which sources produce alternating current (AC)? Solar power plants Batteries All of these Hydro-electric generators Solar power plants Batteries All of these Hydro-electric generators ANSWER DOWNLOAD EXAMIANS APP
Physics Which physical quantity is measured in 'siemens'? Electrical conductance Refractive index Magnetic flux Electric potential Electrical conductance Refractive index Magnetic flux Electric potential ANSWER DOWNLOAD EXAMIANS APP
Physics When temperature difference between liquid and its surroundings is doubled, the rate of loss of heat will: Double Remain same Four times Three times Double Remain same Four times Three times ANSWER DOWNLOAD EXAMIANS APP
Physics Pipelines in cold countries often burst in winter, because Pipelines contract in their volume Water freezes and expands in its volume Temperature of ice is less than that of water Pipelines expand due to freezing Pipelines contract in their volume Water freezes and expands in its volume Temperature of ice is less than that of water Pipelines expand due to freezing ANSWER DOWNLOAD EXAMIANS APP
Physics The instrument which uses sound waves to measure the depth of oceans is Altimeter Venturimeter Sonar Radar Altimeter Venturimeter Sonar Radar ANSWER DOWNLOAD EXAMIANS APP
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