CHM 101 FULL AND UPDATED CBT PAST QUESTIONS

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Question: Almost the entire mass of an atom is concentrated in the__________.

a) proton

b) electrons

c) nucleus

d) neutrons

Question: Electron was discovered by___________.

a) Chadwick

b) Thomson

c) Goldstein

d) Bohr

Question: An atom has a mass number of 23 and atomic number 11. The number of protons are_________.

a) 11

b) 12

c) 23

d) 44