ATOMIC NUCLEUS MCQs 8 min Score: 0 Attempted: 0/8 Subscribe 1. . Mass of a nucleus is of the order of: (A) 10⁻¹⁹ kg (B) 10⁻²⁹ kg (C) 10⁻³¹ kg (D) 10⁻²⁴ kgShow All Answers 2. . Mass of a proton is: (A) 9.10 × 10⁻³¹ kg (B) 1.67 × 10⁻³¹ kg (C) 1.67 × 10⁻²⁷ kg (D) 1.67 × 10⁻¹⁷ kgShow All Answers 3. . The unified mass is based on rest mass of an atom of carbon and is equal to: (A) 12 Units (B) 10 Units (C) 15 Units (D) 7 UnitsShow All Answers 4. . One a.m.u is equal to: (A) 1.66 × 10²⁶ kg (B) 1.66 × 10²⁵ kg (C) 1.66 × 10⁻²⁷ kg (D) 1.66 × 10⁻²⁸ kgShow All Answers 5. . Elements showing radioactivity have atomic number: (A) Z > 83 (B) Z > 72 (C) Z < 72 (D) Z < 83Show All Answers 6. . Gamma rays consist of a stream of: (A) Electrons (B) Protons (C) Positrons (D) PhotonsShow All Answers 7. . Fission chain reaction is controlled by introducing: (A) Graphite rod (B) Platinum rods (C) Cadmium (D) Boron rodsShow All Answers 8. . First atomic reactor was introduced by: (A) Rutherford (B) Wilson (C) Enrico Fermi (D) CurieShow All Answers
