Statement I: Higher order ionisation constant (Ka2,Ka3 are smaller than the lower order ionisation constant (Ka1) of a polyprotic acid.Statement II: It is more difficult to remove a positively charged proton from a negative ion due to electrostatic forces.
Terrorists often use ammonium nitrate fertilizer as an ingredient in car bombs. When ammonium nitrate explodes, it decomposes to gaseous nitrogen, oxygen and water vapour. The force of the explosion results from the sudden production of a huge volume of hot gas. It has been claimed that NH4NO3 fertilizer can be rendered unexplodable by adding compounds such as diammonium hydrogen phosphate (NH4)2HPO4. Analysis of such a disensitized sample of NH4NO3 showed the mass % nitrogen to be 33.81%
A Coriolis Force is i) Caused by earth’s rotationii) Is responsible for deflecting winds towards the right in the Northern Hemisphere and towards the left in Southern Hemisphere.iii) Caused by earth’s revolutioniv) Caused by earth’s inclination towards its pole at 66 1/2°
A ball weighing 4 kg of density 4000 kg/m3 is completely immersed in water of density1000 kg/m3. The value of buoyant force acting on the ball is [[1]] N.(Take g = 10 m/s2)
A force applied on a body of mass 4 kg for 5 seconds changes its velocity from10 m/s to 20 m/s. The power required is [[1]] W.