Thomson's Atomic Model

Q.

Name the fundamental particle discovered by the following scientist (i) Goldstein (ii) Thomson (iii) Chadwick.

Q. The first model of an atom was proposed by

1. Niels Bohr
2. James Chadwick
3. Ernest Rutherford
4. J.J Thomson

Q.

In Thomson’s model of an atom, which of the following statements are correct?

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

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

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

(iv) The electrons attract each other to stabilize the atom.

1. 
   

   (i), (ii) and (iii)

2. 
   

   (i) and (iii)

3. 
   

   (i) and (iv)

4. 
   

   (i), (iii) and (iv)

Q. _______ atomic model is also known as the plum pudding model.

1. Dalton's
2. Bohr's
3. Thomson's
4. Rutherford's

Q.

Statement I- Thomson's atomic model could not explain the result of scattering experiment performed by Rutherford.
Statement II- According to Rutherford, majority of mass was concentrated in a minute, positively charged region (the nucleus) surrounded by electrons.

1. Statement I is correct.
2. Statement II is correct.
3. Both the statements are correct.
4. Both the statements are incorrect.

Q.

In Thomson’s model of an atom, which of the following statements are correct?

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

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

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

(iv) The electrons attract each other to stabilize the atom.

1. 
   

   (i), (ii) and (iii)

2. 
   

   (i) and (iii)

3. 
   

   (i) and (iv)

4. 
   

   (i), (iii) and (iv)

Q. What are the cathode rays composed of?

1. Only mass
2. Only charge
3. Neither mass nor charge
4. Both mass and charge

Q. What are the postulates of the J J Thomson model?

Q.

Thomson compared atom to watermelon and thus derived some conclusions. Which of the following were his conclusions?

1. The seeds are positive spheres and red edible parts are the electrons.
2. The seeds are the electrons and red edible part is the positive sphere.
3. The seeds and edible part both are electrons.
4. The seeds and edible part both are positive charge.

Q.

Statement I- Thomson's atomic model could not explain the result of scattering experiment performed by Rutherford.
Statement II- According to Rutherford, majority of mass was concentrated in a minute, positively charged region (the nucleus) surrounded by electrons.

1. Statement I is correct.
2. Statement II is correct.
3. Both the statements are correct.
4. Both the statements are incorrect.

Q. What are the cathode rays composed of?

1. Only mass
2. Only charge
3. Neither mass nor charge
4. Both mass and charge

Q. _______ atomic model is also known as the plum pudding model.

1. Rutherford's
2. Thomson's
3. Bohr's
4. Dalton's