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CHEMISTRY

Chemistry
The antiparticle of an electron is

Beta particles
Proton
Positron
Alpha particles

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Chemistry
Nucleons are regarded as composites sub-particles known as

Photons
Mesons
Quarks
Leptons

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Chemistry
Conduction band electrons have more mobility than holes because they

Are lighter
Experience collision less frequently
Have negative charge
Need less energy to move them

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Chemistry
Which one of the following has greatest mass ?

Hydrogen nucleus
Proton
Electron
Neutron

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Chemistry
The nuclear particle having no mass and no charge, but only spin is

Neutrino
Proton
Meson
Electron

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