1. What are the canal rays?
Ans: Canal rays are positively charged rays produced in a discharge tube when a high voltage is applied. These rays were discovered by Eugen Goldstein and led to the discovery of positively charged subatomic particles called protons.
2. If an atom contains one electron and one proton, will it carry any charge or not?
Ans: An atom with one electron and one proton will be electrically neutral. This is because the positive charge of the proton cancels out the negative charge of the electron, resulting in no net charge.
3. On the basis of Thompson’s model of an atom, explain how the atom is neutral as a whole.
Ans: According to Thomson’s model (the “plum pudding” model), an atom consists of a positively charged sphere with negatively charged electrons embedded in it. Since the number of electrons is equal to the number of protons, the positive and negative charges cancel each other out, making the atom electrically neutral.
4. On the basis of Rutherford’s model of an atom, which subatomic particle is present in the nucleus of an atom?
Ans: According to Rutherford’s model, the nucleus of an atom contains positively charged protons. These protons are responsible for the positive charge of the nucleus, while the electrons orbit the nucleus.
5. On the basis of Rutherford’s model of an atom, which subatomic particle is present in the nucleus of an atom?
Ans: According to Rutherford’s model, the nucleus of an atom contains positively charged protons. These protons are responsible for the positive charge of the nucleus, while the electrons orbit the nucleus.