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Mass Transfer

Mass Transfer
Liquid diffusivity is of the order of __________ cm² /second.

0.1
0.01
10-5 to 10-6
> 1

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Mass Transfer
Raschig ring made of procelain cannot be used for treating concentrated

Alkalis
Nitric acid
Sulphuric acid
Hydrochloric acid

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

D
1/D
D0.5
D1.5

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Mass Transfer
During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the

Gas film
Liquid film
None of these
Liquid-gas interface

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Mass Transfer
For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.

Tunnel
Rotary
Tray
None of these

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Mass Transfer
Which of the following adsorbent is used to decolourise yellow glycerine?

Fuller
Silica gel
Activated carbon
Alumina

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