Al-ChemisT RJ

Al-ChemisT RJ

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07/02/2021

Shielding effect is due to :
a) Neutron
b) Proton
c) Proton and Neutron
d) Electron

21/01/2021

All of the following substance are crystalline execpt
a) ice
b) Diamond
c) Sucrose
d) Plastic

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