During discharge tube experiment ,_______________ rays are emitted from the cathode.
Anode rays
Cosmic rays
Cathode rays
None of these
The mass of an electron
1/1940
1/2940
1/1840
Barium chloride reacts with sodium sulphate solution to form :
Sodium thiosulphate
Barium sulphate
Sulphur dioxide
Hydrogen sulphide
Identify the wrong statement regarding the properties of cathode rays ?
Cathode rays are deflected towards the negatively charged plate.
Cathode rays are deflected perpendicular to the applied magnetic field when it passed through a magnetic field.
Cathode rays are made up of small particles.
Cathode rays travel in straight line.
The presence of positively charged particles in the atom has been predicted by :
Neils Bohr
J.J. Thomson
Goldstein
Millikan
Proton is deflected towards the ___________ charged plate.
Positively
Negatively
Illuminated
Cathode rays are produced when high voltage is applied across a gas under :
High pressure
Low pressure
Very low pressure (0.1 mm of mercury)
Ordinary pressure
Which one of the following is a wrong statement regarding the postulates of Dalton's atomic theory ?
Matter is made up of small indivisible particles called atom.
Atoms of same element are different in all respects.
Atoms of different elements are different in all respects.
Atom is the smallest particle that takes part in a chemical reaction.
______________ is produced when one electron is removed from one hydrogen atom.
Electron
Neutrino
Antineutrino
Proton
According to ____________ matter is made up of small, indivisible particles called atoms.
Newton
Lavoisier
Dalton
Proust
