According to ____________ matter is made up of small, indivisible particles called atoms.
Newton
Lavoisier
Dalton
Proust
The properties of ____________ rays depends upon the nature of the gas taken in the discharge tube.
Cathode
Anode
Cosmic rays
U.V.
The scientist who discovered portons
Rutherford
Goldstein
Bohar
None of them
Anode rays are found to be a stream of :
Protons
Electrons
Neutrons
Neutrinos
The mass of an electron
1/1940
1/2940
1/1840
None of these
Which one of the following is a wrong statement regarding to the postulates of Thomson's atom model ?
Atom consists of a positively charged sphere.
Electrons are uniformly distributed in that sphere.
Atom as a whole is electrically neutral.
The positive and negative charges are different in magnitude.
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.
The presence of positively charged particles in the atom has been predicted by :
Neils Bohr
J.J. Thomson
Millikan
During discharge tube experiment ,_______________ rays are emitted from the cathode.
Anode rays
Cathode rays
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.
