Physics Why does'nt the hydrogen atom emit X-rays? It has only one electron Its energy levels are very close to each other It is very small in size It is highly electropositive It has only one electron Its energy levels are very close to each other It is very small in size It is highly electropositive ANSWER DOWNLOAD EXAMIANS APP
Physics In severe winter, in cold countries water pipes burst because Contraction of water pipes Combined effect of all the above three Water expands on freezing High atmospheric pressure Contraction of water pipes Combined effect of all the above three Water expands on freezing High atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Physics When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together? Hydrogen bond formation Dipole interaction Covalent attraction Vander waals forces Hydrogen bond formation Dipole interaction Covalent attraction Vander waals forces ANSWER DOWNLOAD EXAMIANS APP
Physics Speed of light is maximum in ________ Vacuum Liquids Gases Solids Vacuum Liquids Gases Solids ANSWER DOWNLOAD EXAMIANS APP
Physics The cover of a solar cooker is made of glass because It retains the heat inside by the green house effect It rediates heat better than metals It reflects sun's rays It absorbs sun's rays It retains the heat inside by the green house effect It rediates heat better than metals It reflects sun's rays It absorbs sun's rays ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these is not a simple machine? A lever A ramp The pulley A pair of scissors A lever A ramp The pulley A pair of scissors ANSWER DOWNLOAD EXAMIANS APP
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