Atoms Molecules and Ions
The smallest particle of an atom which exists, is called
matter
atom
proton
electron
atom
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The diameter of a ‘nucleus’ isA. 0.00001nm
B. 1nm
C. 0.1nm
D. 0.01nm
A silver pendant is made up of atoms of
A. silver
B. gold
C. platinum
D. metals
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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