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Chemical Engineering / Q&A

For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is____________________?

Chemical Engineering / Q&A, MCQs / Q&A /
For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is____________________?

A. 2
B. 4
C. 11 (Correct)
D. 22

 

For an isothermal second order aqueous phase reaction, A → B, the ratio of the time required for 90% conversion to the time required for 45% conversion is____________________? Read More »

Chemical Engineering / Q&A, MCQs / Q&A

Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of _____________ present in it?

Chemical Engineering / Q&A, MCQs / Q&A /
Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of _____________ present in it?

A. Coal ash
B. Potassium cyanide (Correct)
C. Ortho-xylene
D. None of these

 

 

Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of _____________ present in it? Read More »

Chemical Engineering / Q&A, MCQs / Q&A

The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called__________________?

Chemical Engineering / Q&A, MCQs / Q&A /
The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called__________________?

A. Bauschinger effect (Correct)
B. Hooke’s effect
C. Hysteresis
D. Relaxation

 

 

The loss of strength in compression which occurs, when there is a gain of strength in tension due to over loading is called__________________? Read More »

Chemical Engineering / Q&A, MCQs / Q&A

Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except______________?

Chemical Engineering / Q&A, MCQs / Q&A /
Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except______________?

A. Cost (Correct)
B. Electrical conductivity
C. Thermal conductivity
D. Fusion point

 

 

Beryllia (which is used in making crucibles for melting uranium & thorium) is superior to alumina in all respects for high temperature (> 1900°C ) use, except______________? Read More »

Chemical Engineering / Q&A, MCQs / Q&A