Atoms Molecules and Ions
A silver pendant is made up of atoms of
silver
gold
platinum
metals
silver
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The smallest particle of an atom which exists, is calledA. matter
B. atom
C. proton
D. electron
The diameter of a ‘nucleus’ is
A. 0.00001nm
B. 1nm
C. 0.1nm
D. 0.01nm
Neutrons carry
A. positive charge
B. negative charge
C. neutral charge
D. no charge
A modern model of an atom shows that electrons are present outside nucleus in the region of high
A. probability
B. velocity
C. speed
D. energy level
Rutherford’s Model explains that atom has a nucleus which is surrounded by
A. protons
B. electrons
C. neutrons
D. nuclear energy
In nucleus, mass of an atom is more than
A. 0.9994
B. 0.9499
C. 0.9949
D. 0.4999
The number of oxygen atoms in glucose molecule is 6 and in hydrogen molecules is
A. 6
B. 12
C. 18
D. 8
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