Question 1 :
According to Dalton's atomic theory, the smallest particle in which matter can exist is called<span>:</span>
Question 4 :
Which of the following is not a postulate of Dalton's atomic theory?
Question 5 :
______<span> are the smallest unit of matter that can take part in a chemical reaction</span>.<br/>
Question 6 :
The basic assumption of Bohr's Model of hydrogen <span>atom is that:</span>
Question 7 :
Radius of the nucleus is about ............. times less than the radius of the atom.<br/>
Question 8 :
Which of the following could be justified by Bohr's atomic model?
Question 11 :
A neutral atom of fluorine has a mass number of $19$ and an atomic number of $9$. How many neutrons does it have?
Question 12 :
<span>While revolving in discrete orbits the electrons do not radiate energy. These orbits or shells are called .................. </span>
Question 14 :
Bohr modified the ___________ by adding that the electrons move in orbits of fixed size and energy.
Question 16 :
The ratio of the radius of the Bohr orbit for the electron orbiting the hydrogen nucleus that of the electron orbiting the deuterium nucleus is approximately _____.
Question 17 :
<span>According to drawback of Rutherford's structure of atom electron should fall in:</span>
Question 18 :
According to whose atomic model, electrons are embedded in a gel of positive charge?
Question 19 :
According to Bohr's model, the radius of the seconds orbit of helium atom is:
Question 20 :
According to Dalton, atoms of different elements combine with one another to form :
Question 22 :
Electrons can revolve round the nucleus at any radial distance from the nucleus.<br/><br/>
Question 24 :
Which of the following is/are true for Thomson's model of atom?
Question 28 :
Dalton's theory of same element have same mass and properties was proved wrong with the invention of:
Question 29 :
<span>Which of the following postulates were put forward by Neil Bohr?</span>
Question 30 :
Thomson"s atomic model concluded that _____ is the constituent particle of all kinds of atom.
