Q.7
What does it mean if a molecule is polar?
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The molecule is made up of a noble gas
The molecule is symmetrical
The molecule is asymmetrical
The molecule is made up of a halogen
Q.4
Which is the weakest intermolecular force?
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Dipole-dipole interactions
Hydrogen bonding
London dispersion forces
All are equal in strength
Q.3
How many entities does one mole contain?
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602 000 000 000 000 000 000 000
602 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000 000
602 000 000 000
602 000
Q.6
What is an example of nuclear radiation?
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An alpha particle
Sodium Sulfate
A delta particle
Magnesium Chloride
Q.5
In which ways does atomic radius increase?
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Option 2It increases from bottom to top and left to right on the periodic table
It increases from top to bottom and left to right on the periodic table
It increases from top to bottom and right to left on the periodic table
It increases from bottom to top and right to left on the periodic table
Q.1
What is a mass spectrometer?
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A device to determine the approximate mass of each energy level of a single atom
a measuring instrument used to determine abundance and mass of isotopes
A device to break apart atoms in a molecule
A device to determine the exact mass of a sample of a substance
Q.2
What is the periodic law?
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That when the elements are arranged in order of increasing atomic number there is periodic repetition
That when the elements are arranged in order of increasing atomic mass there is periodic repetition
That when the elements are arranged in order of decreasing atomic mass there is periodic repetition
That when the elements are arranged in order of increasing proton, neutron and electron numbers there is periodic repetition
Q.8
Which of the following molecules is polar?
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CH4
H2O
CF4
CCl4