CHEM BRAIN

According to Heisenberg’s uncertainty principle, the product of uncertainties in position and v elocities for an electron of mass kg 9.1 x 10^-31 kg is 

Uncertainty in the position of a 0.25 g particle is 10^-5. Uncertainty of velocity is ( h = 6.63 x10^-34 Js ) [A IEEE 2002] 

The uncertainty in the momentum of an electron is 1 x 10^-5 kg m / s. The uncertainty in its position will be ( h = 6.63 x10^-34 Js ) [Pb. CET 2000] 

The uncertainty in the position of a moving bullet of mass 1 0 gm is m 10^-5m. Calculate the uncertainty in its velocity [DCE 1999] 

The uncertainty principle and the concept of wave nature of matter was proposed by ...... and ...... respectively [MP PET 1997]

If uncertainty in the position of an electron is zero, the uncertainty in its momentum would be [CPMT 1988]

Simultaneous determination of exact position and momentum of an electron is [BHU 1979]

stands for

“The position and velocity of a small particle like electron cannot be simultaneously determined.” This statement is [NCERT 1979; BHU 1981, 87]

According to Heisenberg uncertainty principle [A MU 1990; BCECE 2005] 

The uncertainty principle was enunciated by [NCERT 1975; Bihar MEE 1997]