5. Inside the Atom

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1. Which is incorrect pair ? 1) Helium - H 2) Neon - Ne 3) Argon - Ar 4) Carban - C

2. Which is False statement about Rutherford’s nuclear model of atom? 1) There is a positively charged nucleus at centre of an atom. 2) Negatively charged particles called Protons revolve around the nucleus. 3) The total negative charged on all the electron is equal to the positive charge on the nucleus. 4) Almost the entire mass of the atom is concentrated in the nucleus

3. Which are the two types of nucleons. 1) neutrons and electrons 2) Protons , neutrons and electons 3) Protons and Electron 4) Protons and neutrons

4. What is the use of Uranium - 235? 1) used for nuclear fission and production of electricity. 2) used for treatment of goiter 3) used in the treatment of disease of thyroid gland 4) used for food preservation from microbes.

5. When first nuclear reactor in India , Bhabha Atomic Research Centre in Mumbai established ? 1) 4th June1956 2) 4th August 1960 3) 4th August 1995 4) 4th August 1956

6. Which charge electron carries? 1) negative 2) no charge 3) both positive and negative 4) positive

7. which isotopes used for determining the age of archeological objects. 1) Cobalt - 60 2) radioactive isotope C-14 3) Uranium - 235 4) Iodine -131

8. what is the Electronic configuration of the element of chlorine? 1) 2 ,8, 8 2) 2, 6, 8 3) 2,7, 8 4) 2, 8, 7

9. how many electrons accommodated in the first shell ‘K’ of Helium. 1) three 2) four 3) six 4) two

10. Which charge found on nucleus at centre of an atom. 1) negative 2) both positive and negative 3) no charge 4) positive