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When a hydrogen atom is raised from ground
energy level to excited energy level, then
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The bond angles of `NH_(3) , NH_(4)^(+)` and `NH_(2)^(-)` are in
the order
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The molarity of `NO_(3) ^(-)` in the solution after `2L`
of `3M AgNO_(3)` is mixed with `3L` of `1M
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A colourless water soluble solid `A` on heating
gives equimolar quantities of `B`and `C`. `B` gives
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The triangle formed by the tangent to the
curve `f(x) = x^2 + bx- b` at the point `(1,1)` and the
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An element with atomic number `Z =11`
emits `K_(alpha) - X` ray of wavelength `lamda`. The
atomic
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