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Chemistry 11 Chapter 5
Atomic Structure
Test 7
1.
Cathode rays are material particles having?
a) None of these
b) Mass
c) Velocity
d) Both
2.
_________ discover protons?
a) James Chadwick
b) J.J Thomson
c) E. Goldstein
d) Stoney
3.
The e/m for positive rays is always _____ than that of electrons?
a) None of these
b) Larger
c) Greater
d) Smaller
4.
_________ discover neutrons?
a) .J Thomson
b) E. Goldstein
c) James Chadwick
d) Stoney
5.
Cathode rays produce _____ when they strike on anode?
a) X-rays
b) Gamma rays
c) Alpha particles
d) Electromagnetic waves
6.
Cathode rays can cause chemical change because they have?
a) None of these
b) Both
c) Reducing effect
d) Oxidizing effect
7.
The e/m value Cathode rays shows that they are simply?
a) Protons
b) Anti-neutrinos
c) Neutrons
d) Electrons
8.
Cathode rays can produce _____ when they fall on matter?
a) Heat
b) Electron
c) Protons
d) Alpha particles
9.
Positive rays produces flashes on _____ plate?
a) ZnS
b) None of these
c) NaCl
d) KOH
10.
_________ discover electrons?
a) Stoney
b) E. Goldstein
c) James Chadwick
d) J.J Thomson
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