Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture ?

Related Mcqs:

1. It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%) ?

   A. 15 min B. 51 min C. 71 min D. 94 min...

2. A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids)) ?

   A. M(Xo – XF) B. M(Xo/XF) C. M ln(Xo/XF) D. MXo ln(Xo/XF)...

3. A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids))_____________?

   A. M(Xo – XF) B. M(Xo/XF) C. M ln(Xo/XF) D. MXo ln(Xo/XF)...

4. Below is given an equilibrium moisture curve of a substance. State which regions represent free moisture and unbound moisture respectively ?

   A. II, III B. II, IV C. IV, III D. IV, II...

5. Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the ___________________ moisture ?

   A. Unbound B. Critical C. Free D. Bound...

6. Moisture contained by a substance in excess of the equilibrium moisture is called the _______________ moisture?

   A. Unbound B. Free C. Critical D. Bound...

7. Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the _______________ moisture?

   A. Free B. Unbound C. Equilibrium D. Bound...

8. Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the _______________ moisture?

   A. Bound B. Unbound C. Critical D. None of these...

9. The drying time between fixed moisture content within diffusion controlled ‘falling rate period’ is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid) ?

   A. √T B. T C. T2 D. T3...

10. The drying time between fixed moisture contents within the ‘constant rate period’ is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid) ?

    A. √T B. T C. T1.5 D. T3...