841. Water’s particles are excellent emulsifiers since they are:
A. Neutral
B. Polar
C. Non-Polar
D. Covalent
842. All of the ions that pass through crossed electric and magnetic fields without deflection have the same:
A. Mass
B. Speed
C. Momentum
D. Energy
843. The mass of a nucleus is equal to the sum of the masses of its constituent nucleons:
A. Greater
B. The same
C. Smaller
D. Sometimes Greater and Sometimes smaller
844. The Ionization energy of an atom relative to the binding energy of its nucleus is:
A. Greater
B. The Same
C. Smaller
D. Sometimes greater and sometimes smaller
845. Yukawa’s theory suggests that nuclear forces arise through the exchange of:
A. Electrons
B. Protons
C. Neutrons
D. Mesons
846. The Tunnel effect makes possible:
A. Alpha Decay
B. -VE beta Decay
C. +VE beta Decay
D. Gamma Decay
847. A nucleus with an excess of neutrons may decay radioactively with the emission of:
A. A neutron
B. A proton
C. An Electron
D. A Positron
848. The first phase of a nuclear reaction involves the formation of:
A. An Alpha Particle
B. A compound Nucleus
C. An Isotope
D. A Mason
849. Unstable elementary particles heavier than the proton are called:
A. Leptons
B. K.Mesons
C. Strange Particles
D. Hyperons
850. A quantity not always conserved in the decay of elementary particles is:
A. Electric Charge
B. Lepton Number
C. Baryon Number
D. Strangeness Number
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