Question 05

Which of the following statements about the electron is incorrect ?

(a) It is negatively charged particle

(b) The mass of electron is equal to the mass of neutron

(c) It is a basic constituent of all atoms

(d) It is a constituent of cathode rays

Q. Which of the following are the properties of an electron?
1. Electron is a constituent of cathode ray
2. Electron is a negatively charged particle
3. The mass of the electron is equal to the mass of the proton
4. Electron is deflected by the electric field but not by magnetic field
Select the correct answer using the code given below:

Q. The constancy of $\frac{e}{m}$ ratio for electrons inspite of variation of gas present in the discharge tube or of the material of the cathode shows that

Q. Q2) Consider the following statements about Indian constitution-

1. Constitution is a body of fundamental principles made by the constituent assembly.
2. Members of the constituent assembly were directly elected by means of universal suffrage.
3. Constitution has distributed power in such a way as to make it difficult to subvert it.
4. The constituent assembly did not represent the Indian people since it was not elected by all citizens
Which of the above following statements is/are correct?

Q.

Which of the following statements about a compound is incorrect ?

(a) A molecule of a compound has atoms of different elements

(b) A compound cannot be separated into its constituent elements by physical methods of separation

(c) A compound retains the physical properties of its constituent elements

(d) The ratio of atoms of different elements in a compound is fixed

Q. Assertion :Mass of a body decreases slightly when it is negatively charged Reason: Charging is due to transfer of electrons