During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to

With increase in the liquid flow rate at a fixed gas velocity in a randomly packed counter current gas-liquid absorption column, the gas pressure drop

A

Decreases

B

Remains unchanged

C

Increases

D

Decreases exponentially

একটি HCl দ্রবনের ঘনত্ব 1.20 গ্রাম/মি.লি। এই দ্রবণে 35%(W/W) HCl এসিড আছে।500 মি.লি. দ্রবণে কি পরিমাল বিশুদ্ধ HCl আছে?

A

210gm

B

220mg

C

120gm

D

200gm

পরীক্ষাগারে Na2CO3 কে HCl দ্বারা ট্রািইটেশন করতে মিথাইল -অরেঞ্জ নির্দেশক ব্যবহৃত হয়। যদি Na2CO3 এর ঘনমাত্রা 0.125M এবং এর 10ml কে ট্রাইটেমন করতে 16ml HCl প্রয়োজন হয়, তাহলে HCl এর ঘনমাত্রা কত হবে?

A

1.53 M

B

1.35 M

C

0.156 M

D

1.256 M

Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele's method, this method

A

Is more accurate in finding the number of equilibrium stages

B

Accounts for the enthalpy changes in the process

C

Facilitates direct calculation of heat load on reboiler & condenser from, the diagram used in this method

D

All of the above

In a gas-liquid absorption coloumn, for obtaining the maximum absorption efficiency

A

Liquid stream should be distributed uniformly

B

Gas stream should be distributed uniformly

C

Both gas as well as liquid streams should be distributed uniformly

D

By passing should be completely avoided

Absorption (liquid-gas system) with evolution of heat as compared to isothermal absorption results in

A

Decreased solute solubility

B

Large minimum liquid to gas (L/G) ratio

C

Large number of trays

D

All of the above

Point A is 10 miles West of Point B. Point b is 30 miles North of pint C. Point C is 20 miles East of Point D. What is the distance (in miles) between Point A and Point D?

A

1010

B

1020

C

2010

D

3010

Point A is 10 km west of point B. Point B is 30 km north of point C. Point C is 20 km east of point D. What is the distance between point A and D?

A

1020Km

B

1010Km

C

2010Km

D

3010Km

If f is defined as above, then which of the following applies to a feed at dew point?

A

F = 1

B

F

C

F > 1

D

0

The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and re-condensed, then the liquid with the next higher boiling point is then evaporated and re-condensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called

A

Cracking

B

Fractional distillation

C

Full distillation

D

Carbonisation

During the absorption of HCl gas in water (to produce liquid HCl), the gas is kept above dew point to

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