UPSC CDS/OTA
Structure of the Atom
General Studies
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Structure of the Atom

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Questions
30
Time
30 min
Marks
30
Solutions
All inline
Q1Which of the following statements about Rutherford’s atomic model are correct? 1. The atom has a dense positively charged nucleus. 2. Electrons revolve around the nucleus in circular orbits. 3. Rutherford’s model could explain the stability of the atom. Select the correct answer using the codes below:MediumSolve →Q2Which subatomic particle was discovered by J.J. Thomson?MediumSolve →Q3Consider the following statements: 1. Isotopes have the same atomic number but different mass numbers. 2. Isobars have different atomic numbers but the same mass number. Which of the above is/are correct?MediumSolve →Q4The mass of an electron is approximately:MediumSolve →Q5Which one of the following statements is correct regarding the dual nature of matter and radiation?MediumSolve →Q6Which scientist discovered the neutron?MediumSolve →Q7According to Bohr’s model, which of the following is constant for an electron in a given orbit?MediumSolve →Q8Which of the following phenomena proves the particle nature of light?MediumSolve →Q9Who proposed that electrons have both wave and particle nature?MediumSolve →Q10Which of these is a quantum number that indicates the shape of an orbital?MediumSolve →
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