Ionic reactions occur in____________________?

Related Mcqs:

1. In the hydrodealkylation of toluene to benzene, the following reactions occur: C7H8 + H2 → C6H6 + CH4 2C6H6 ⇌ C12H10 + H2 Toluene and hydrogen are fed to a reactor in a molar ratio 1:5.80% of the toluene gets converted and the selectivity of benzene(defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is_______________________?

   A. 0.16
   B. 0.144
   C. 0.152
   D. 0.136

2. Photo-chemical reactions occur in presence of ___________________?

   A. Sunlight
   B. Darkness
   C. Solid catalysts
   D. Monochromatic radiation only

3. Non-catalytic fluid-solid reactions are represented by _______________ model?

   A. Continuous reaction
   B. Unreacted core
   C. Both A. and B.
   D. Neither A. and B.

4. For identical flow rate, feed composition and for elementary first order reactions, ‘N’ equal sized mixed reactors in series with a total volume ‘V’ gives the same conversion as a single plug flow reactor of volume ‘V’ for constant density systems. This is true, when the value of ‘N’ is ___________________?

   A. 1
   B. > 1
   C. ∞
   D. ≥ 1

5. For the irreversible elementary reactions in parallel as shown in the bellow figure, the rate of disappearance of ‘X’ is equal to_______________?

   A. CA (K1 + K2)
   B. CA (K1 + K2)/2
   C. CA . K1/2
   D. CA . K2/2

6. For multiple reactions, the flow pattern within the vessel affects the ____________________?

   A. Size requirement
   B. Distribution of reaction products
   C. Both A. and B.
   D. Neither A. nor B.

7. Reactions with high activation energy are_____________________?

   A. Very temperature sensitive
   B. Temperature insensitive
   C. Always irreversible
   D. Always reversible

8. Exothermic reactions are best carried out in ________________?

   A. A CSTR
   B. CSTR in series
   C. A plug flow reactor followed by CSTR
   D. CSTR followed by a plug flow reactor

9. Which of the following chemical reactions will be favoured by low pressure ?

   A. 2HI ⇌ H2 + I2
   B. N2O2 ⇌ 2NO2
   C. N2 + O2 ⇌ 2NO
   D. None of these

10. The reactions of high molecularity are rare, because________________?

    A. Of very large activation energy of many bodies
    B. Of low probability of many body collisions
    C. Many body collisions are not favoured energetically
    D. Of requirement of very large concentration for such reactions