List of top Chemistry Questions on Discovery of Sub-atomic Particles

Which of the following statements are correct about canal rays?
• [(i)] They carry positively charged particles.
• [(ii)] The mass of the particles of these rays does not depend upon the gas present in the cathode ray tube.
• [(iii)] The particles behave in a different manner in electric field as those of cathode rays.
• [(iv)] The charge to mass ratio of the particles does not depends on the gas present in the cathode ray tube.

Henry Moseley studied characteristic X-ray spectra of elements. The graph which represents his observation correctly is
Given v = frequency of X-ray emitted
Z = atomic number

Which of the following compound does not contain sulphur atom?

Which one of the following has unit positive charge and $1$ amu mass?

The charge on an electron was discovered by:

Pick the odd one out:

The nucleus of an atom consists of

The ratio of charge to mass of an electron in coulombs per gram was determined by J.J. Thomson. He determined this ratio by measuring the deflection of cathode rays in electric and magnetic fields. What value did he find for this ratio?