Boric acid is an acid because its molecule

The main constituent of vinegar is

White phosphorus glows in the dark due to

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 codes given below.