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The plum pudding ( first model )of the atom was proposed by JJ Thomson. Which of the following is/are the limitations of the Thomson model (i) The model wasn't able to explain the alpha scattering (ii) The model failed to explain the position of nuclei  (iii) The model failed to explain how the positive charges hold the negative charges (iv)The model failed to explain the existence of electrons in an atom 
According to Thomson's model of an atom: 1. An atom consists of a positively charged sphere and the electrons are embedded in it. 2. The negative and positive charges are not always equal in magnitude. So, the atom as a whole is not always electrically neutral. Choose the correct code:  
Which of the following points are correct regarding the electronic configuration? A. It is the arrangement of electrons in the shells of an atom. B. It is the arrangement of electrons in the subshells. C. It is the arrangement of electrons in the orbitals of an atom.
According to the Rutherford's Atomic Model, the electrons inside the atom are
With reference to Thomson's atomic model, which of the following is correct? I. The atom is made of positively charged sphere and electrons are trapped in it. II. The atom is electrically neutral.
The Weberian model of bureaucracy has been criticised from a variety of stand points.
Consider the following points in this regard:
1. The Weberian model appears to be a 'machine theory' and a closed system model taking little account of organisational interactions with the environment.
2. The structural features of bureaucracy as laid down by Weber might be suitable for routine and repetitive tasks but these would produce dysfunctional consequences in terms of human behaviour if the jobs would involve innovation and creativity.
3. Weberian model has not been found to respond adequately to the tasks of socioeconomic transformation in the developing countries. These tasks require quick changes whereas the capacity of the Weberian model for adaptation to change is rather slow.
4. Weber's model is confined to the study of formal bureaucratic structure and fails to take notice of the informal structure of bureauracy such as informal relations, informal norms and values, an informal power hierarchy and informal power struggles.
Which of the above points make a valid criticism of the Weberian model? Select the correct answer from below:
The Rutherford atomic model, sometimes called the planetary model of the atom, describes the atom as taking which configuration?
In the question two statements are given, followed by two conclusions, I and II. You have to consider the statements to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follows from the given statements. Statement I: No electron is proton. Statement II: All protons are atom. Conclusion I: Some electrons are atoms. Conclusion II: No electrons are atom.
Which of the following options are correct? 1. Three carbon atom is indicated by 'prop'. 2. Four carbon atom is indicated by 'but'. 3. Seven carbon atom is indicated by 'Hex'. 4. Nine carbon atom is indicated by 'Non'.
Which of the following are true for an element? (i) Number of protons of an atom determines its atomic number (ii) Mass of an atom resides in its orbits (iii) Protons and electrons make the nucleons (iv) Elements can be defined by the number of protons they possess