List of top Chemistry Questions on packing efficiency asked in AIPMT

Percentage of free space in body centred cubic (bcc) unit cell is

The fraction of total volume occupied by the atoms present in a simple cube is

Percentage of Se (at. mass $=78.4$ ) in peroxidase anhydrase enzyme is $0.5 \%$ by weight, then minimum molecular mass of peroxidase anhydrase enzyme is