Q2 of 22 Page 113

Fill in the blanks:

1. ______is a negatively charged particle. (Electron/Proton)


2. Proton is deflected towards the___ charged plate. (positively, negatively)

1. Electron.

Reason- In experiment conducted by J.J. Thompson, he proved that cathode rays emit negativell charged particles called electrons.


2. Negatively


Reason- Because protons are positively charged particles emitted from anode.


More from this chapter

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1

Dalton’s Atomic Theory successfully explained the Law of ______.

i) Conservation of Mass


ii) Definite Proportions


iii) Radioactivity


iv) Multiple Proportions


a) (i), (ii) and (iii) b) (i), (iii) and (iv) c) (i) ,(ii) and (iv)

 1

Based on the Thomson’s model of an atom, say which of the following statements are correct.

i) The positive charge is assumed to be uniformly distributed over the atom.


ii) The electrons are uniformly distributed in the positively charged sphere.


iii) The electrons attract each other to stabilize the atom.


iv) The mass of the atom is assumed to be uniformly distributed over the atom.


a) (i) ,(ii) and (iv) b) (i),(ii) and (iii) c) (i) and (iii)

 3

Match the entries of column I with the appropriate entries of column II and column III: (Double matching)

 4

Identify the wrong statement regarding the properties of cathode rays and correct it.

1. Cathode rays are made up of large particles with mass and kinetic energy.


2. Cathode rays are deflected by the magnetic field.


3. Cathode rays depend on the nature of the gas inside the tube.