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Kerala (English Medium)->Plus 2 Biology Science Questions

Total Questions 664
what is a prism
Do Siamese twins have different blood groups?
In terms of band theory, what is the difference (1)Between a conductor and an insulator (2)Between a conductor and a semi conductor ?
what is meant by banking of roads?
HOW TO CUT DNA? NAME THE PROCESS
1.SO3 molecule has zero dipole moment,why? 2.SF6is a known compound but Scl6 and OF6 do not exist,why? 3.H2S is a gas where H2o is a liquid,why? 4.SO2 is a gas but SeO2 is a solid,why? 5.Pcl5 can be an oxidizing agent,not a reducing agent,why? 6.oxygen is a gas but sulphur is a solid,why?
REFLECTION AT A PLANE SURFACE
DOPPLER EFFECT IN LIGHT
What are stiochiometric defect and explin ?
what is the state of flame
the difference between electronic conductance & electrolytic conductance
what is vanthoff factor
what is the difference between oogenisis$spermatogenisis
Is their difference between spermatogenisis $spermiogenisis
what is meant by voids?
WHAT IS STEM CELLS
a 220v,100w bulb is connected to 110v source find the power consumed by the bulb ?
a 100w bulb and a 500w bulb are joined in parallel to the mains which bulb will draw more current ?
A low voltage supply must have low internal resistance why?
It is easier to start a car engine on a warm day than on a chilly day why?