Catalysis and Reactor Design MCQs 2026

Catalyst poison

1. Astrongly adsorbs and blocks active sites✓
2. Balways increases surface area beneficially✓
3. Cis same as promoter✓
4. Donly increases temperature✓

Zeolites used in catalysis due to

1. Aonly metallic conductivity✓
2. Bonly magnetic hysteresis✓
3. Cshape selectivity and acidity✓
4. Donly liquid viscosity✓

Turnover frequency TOF measures

1. Aonly reactor volume✓
2. Bonly pump head✓
3. Conly heat exchanger UA✓
4. Dmolecules converted per active site per time✓

Heterogeneous catalyst is in

1. Asame gas phase only always✓
2. Bdifferent phase than reactants usually solid✓
3. Calways dissolved enzyme only✓
4. Dalways liquid fuel only✓

Catalyst promoter

1. Apoisons catalyst always✓
2. Benhances activity or selectivity of main catalyst✓
3. Creplaces reactants✓
4. Dis always the support only✓