______________ is produced when one electron is removed from one hydrogen atom.
Electron
Neutrino
Antineutrino
Proton
Anode rays are found to be a stream of :
Protons
Electrons
Neutrons
Neutrinos
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.
The mass of an electron
1/1940
1/2940
1/1840
None of these
Who proposed first the word 'electron' for atom of electricity ?
J.J. Thomson
William Crooke
Proust
Stoney
________ proposed that atom consists of a positively charged sphere where electrons are embedded in that sphere
Thomson
Dalton
Bohr
Rutherford
During any physical or chemical change takes place, the total mass of the matter remains:
Different
Zero
Same
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.
Which law states that "A pure chemical compound prepared by any method consists of the same elements combined together in a fixed proportion by mass" ?
Law of conservation of mass
Law of reciprocal proportions
Law of multiple proportions
Law of definite proportions
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
