Which one is not true about cathode rays ?
A. 9.11×10-31 Kg B. Cast shadow C. Heat up the platinum foil D. Cannot ionize
Chemistry MCQs
Rutherfords planet like structure was defective and unsatisfactory because_________________?
A. Moving e- accelerate towards the nucleus B. Continuous spectrum C. behavior of electron remain unexplained D. all
Splitting of spectral lines when atom is subjected to magnetic field is called _______________?
A. Zeemans effect B. Starks effect C. Photo electric effect D. Compton effect
Which one of the following explain the shape of orbitals _________________?
A. Principal of quantum number B. Azimuthal quantum number C. Magnetic quantum number D. Spin quantum number
Pressure in gas discharge tube was kept________________?
A. 10 torr B. 1 torr C. 0.1 torr D. 0.01 torr
Angle of deflection was studied by________________?
A. Hitorff B. Stoney C. William Crookes D. J.Perrin
Positive rays give flash on________________?
A. AgNO3 plate B. AgCl plate C. ZnO D. ZnS
The value of e/m ratio of electron is________________?
A. 6.02 x 1023 C/kg B. 1.7588 x 1020 C/kg C. 9.1095 x 10-31 C/kg D. 1.7588 x 1011 C/kg
Planks theory says energy is emitted__________________?
A. In continuous manner B. Discontinuous manner C. Simultaneously D. In the form of heat
2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ?
A. 2-times B. 3-times C. 4-times D. 6 times