307113
Rutherford’s experiment on scattering of \(\alpha {\rm{ - }}\) particles showed for the first time that atom has
1 Electrons
2 Protons
3 Nucleus
4 Neutrons
Explanation:
Rutherford’s \({\rm{\alpha - }}\) particle scattering proved that atoms contain massive, positively charged centre is called the nucleus.
CHXI02:STRUCTURE OF ATOM
307114
Which of the following properties of atom could be explained correctly by Thomson Model of atom?
1 Overall neutrality of atom.
2 Spectra of hydrogen atom.
3 Position of electrons, protons and neutrons in atom.
4 Stability of atom.
Explanation:
According to Thomson atomic model, the mass of the atom is assumed to be uniformly distributed over the atom. This model was able to explain the overall neutrality of the atom.
NCERT Exemplar
CHXI02:STRUCTURE OF ATOM
307116
Assertion : Atom is electrically neutral. Reason : A neutral particle, neutron is present in the nucleus of atom.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
An atom contains positively charged protons, negatively charged electrons and neutral neutrons. The number of protons and electrons are equal, making the net charge zero. So option (2) is correct.
CHXI02:STRUCTURE OF ATOM
307117
Assertion : Thomson's atomic model is known as 'raisin pudding' model. Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In the raisin pudding model, the atom was envisioned as a positively charged sphere, often likened to a pudding, with electrons (the negatively charged particles) embedded like raisins within this sphere. So option (1) is correct.
307113
Rutherford’s experiment on scattering of \(\alpha {\rm{ - }}\) particles showed for the first time that atom has
1 Electrons
2 Protons
3 Nucleus
4 Neutrons
Explanation:
Rutherford’s \({\rm{\alpha - }}\) particle scattering proved that atoms contain massive, positively charged centre is called the nucleus.
CHXI02:STRUCTURE OF ATOM
307114
Which of the following properties of atom could be explained correctly by Thomson Model of atom?
1 Overall neutrality of atom.
2 Spectra of hydrogen atom.
3 Position of electrons, protons and neutrons in atom.
4 Stability of atom.
Explanation:
According to Thomson atomic model, the mass of the atom is assumed to be uniformly distributed over the atom. This model was able to explain the overall neutrality of the atom.
NCERT Exemplar
CHXI02:STRUCTURE OF ATOM
307116
Assertion : Atom is electrically neutral. Reason : A neutral particle, neutron is present in the nucleus of atom.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
An atom contains positively charged protons, negatively charged electrons and neutral neutrons. The number of protons and electrons are equal, making the net charge zero. So option (2) is correct.
CHXI02:STRUCTURE OF ATOM
307117
Assertion : Thomson's atomic model is known as 'raisin pudding' model. Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In the raisin pudding model, the atom was envisioned as a positively charged sphere, often likened to a pudding, with electrons (the negatively charged particles) embedded like raisins within this sphere. So option (1) is correct.
307113
Rutherford’s experiment on scattering of \(\alpha {\rm{ - }}\) particles showed for the first time that atom has
1 Electrons
2 Protons
3 Nucleus
4 Neutrons
Explanation:
Rutherford’s \({\rm{\alpha - }}\) particle scattering proved that atoms contain massive, positively charged centre is called the nucleus.
CHXI02:STRUCTURE OF ATOM
307114
Which of the following properties of atom could be explained correctly by Thomson Model of atom?
1 Overall neutrality of atom.
2 Spectra of hydrogen atom.
3 Position of electrons, protons and neutrons in atom.
4 Stability of atom.
Explanation:
According to Thomson atomic model, the mass of the atom is assumed to be uniformly distributed over the atom. This model was able to explain the overall neutrality of the atom.
NCERT Exemplar
CHXI02:STRUCTURE OF ATOM
307116
Assertion : Atom is electrically neutral. Reason : A neutral particle, neutron is present in the nucleus of atom.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
An atom contains positively charged protons, negatively charged electrons and neutral neutrons. The number of protons and electrons are equal, making the net charge zero. So option (2) is correct.
CHXI02:STRUCTURE OF ATOM
307117
Assertion : Thomson's atomic model is known as 'raisin pudding' model. Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In the raisin pudding model, the atom was envisioned as a positively charged sphere, often likened to a pudding, with electrons (the negatively charged particles) embedded like raisins within this sphere. So option (1) is correct.
307113
Rutherford’s experiment on scattering of \(\alpha {\rm{ - }}\) particles showed for the first time that atom has
1 Electrons
2 Protons
3 Nucleus
4 Neutrons
Explanation:
Rutherford’s \({\rm{\alpha - }}\) particle scattering proved that atoms contain massive, positively charged centre is called the nucleus.
CHXI02:STRUCTURE OF ATOM
307114
Which of the following properties of atom could be explained correctly by Thomson Model of atom?
1 Overall neutrality of atom.
2 Spectra of hydrogen atom.
3 Position of electrons, protons and neutrons in atom.
4 Stability of atom.
Explanation:
According to Thomson atomic model, the mass of the atom is assumed to be uniformly distributed over the atom. This model was able to explain the overall neutrality of the atom.
NCERT Exemplar
CHXI02:STRUCTURE OF ATOM
307116
Assertion : Atom is electrically neutral. Reason : A neutral particle, neutron is present in the nucleus of atom.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
An atom contains positively charged protons, negatively charged electrons and neutral neutrons. The number of protons and electrons are equal, making the net charge zero. So option (2) is correct.
CHXI02:STRUCTURE OF ATOM
307117
Assertion : Thomson's atomic model is known as 'raisin pudding' model. Reason : The atom is visualized as a pudding of positive charge with electrons (raisins) embedded in it.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
In the raisin pudding model, the atom was envisioned as a positively charged sphere, often likened to a pudding, with electrons (the negatively charged particles) embedded like raisins within this sphere. So option (1) is correct.
