Chemistry MCQ – Series 2
1) Tritium is an isotope of _
a) Oxygen
b) Hydrogen
c) Phosphorus
d) Nitrogen
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2) The number of unpaired electrons in carbon atom is _
a) 2
b) 4
c) 1
d) 3
3) Cathode rays are _
a) Electromagnetic wave
b) Stream of a-particle
c) Stream of electrons
d) Radiations
4) Neutron was discovered by _
a) J.J. Thomson
b) Chadwick
c) Rutherford
d) Priestley
5) Isotopes of the atoms of same element have _
a) Same number of neutrons
b) Same number of protons
c) Same atomic mass
d) Different chemical properties
6) Rutherford’s a-scattering experiment related to the size of the _
a) Nucleus
b) Atom
c) Electron
d) Neutron
7) Neutrino has –
a) Charge + 1 , mass 1
b) Charge 0,mass 0
c) Charge -1, mass 1
d) Charge 0, mass 1
8) Positive iron are formed from neutral atoms by loss of _
a) Neutrons
b) Protons
c) Nuclear charge
d) Electrons
9) Which one of the following is an element?
a) Alumina
b) Brass
c) Graphite
d) Silicon
10) Formation of cation occurs by_
a) gain of electrons
b) loss of electrons
c) gain of proton
d) loss of proton