https://www.geekmcq.com/

Engineering :: Nuclear Engineering


61.  Elements have different nuclear charge but the same mass number are called
A. isotones B. isobars
C. isotopes D. isosteres

62.  The elements A and B which are isobaric have atomic number 18 and 20 respectively. If B contains 20 neutrons the number of neutrons in A is
A. 16 B. 18
C. 20 D. 22

63.  The increasing order (lowest first) for the values of e/m (charge/mass) for electron (e) proton (p) neutron (n) and alpha particle (a) is
A. e p n a B. n p e a
C. n p a e D. n a p e

64.  An element zMA undergoes an ?-emission followed by two successive ?-emissions. The element formed is
A. zMA-3 B. zMA-4
C. zMA-2 D. zMA-6

65.  The radioactive isotope of hydrogen is called
A. protium B. deuterium
C. tritium D. ortho-hydrogen

66.  Unit negative charge and negligible mass are the characteristics of
A. electrons B. protons
C. neutrons D. mesons

67.  One amu is equal to
A. 1.66 x 10-24 kg B. 1.66 x 10-21 kg
C. 1.66 x 10-27 kg D. 1.66 x 10-26 kg

68.  Which one of the following elements is not radioactive?
A. Radium B. Zirconium
C. Uranium D. Polonium

69.  One amu is equivalent to
A. 931 J B. 931 eV
C. 931 MeV D. 9.31 MeV

70.  When a radioactive element emits an ?-particle it becomes
A. electrically negative B. electrically positive
C. neutral D. none of the above




© 2012-2024 by GeekMCQ™ Technologies. All Rights Reserved | Copyright | Terms of Use & Privacy Policy

Contact us: info@geekmcq.com