The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as

Solution X contains 7% (by weight) of liquid M and solution Y contains 14.5% (by weight) of liquid M. If 3 grams of solution X is mixed with 2 grams of solution Y, then liquid M accounts for what percent of the weight of the resulting solution?

A

6.09%

B

10%

C

10.75%

D

21.5%

Which one is a naturally occuring noble gas?

A

Sodium

B

Potassium

C

Argon

D

Boron

দুটি এক-পরমাণুক আদর্শ গ্যাস পরস্পরের সাথে তাপীয় সাম্যাবস্থায় আছে। A গ্যাস m ভরের অণু দ্বারা গঠিত, এবং B গ্যাস 4m ভরের অণু দ্বারা গঠিত। A গ্যাসের আয়তন ৪ গ্যাসের আয়তনের দ্বিগুণ। এদের চাপের অনুপাত PA / PB কত? (Two monoatomic ideal gases are in thermal equilibrium with each other. Gas A is composed of molecules with mass m while gas B is composed of molecules with mass 4m. The volume of gas A is twice that of gas B. What it the ratio of their pressures PA / PB ?)

A

1/4

B

1/2

C

1

D

2

Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction?

A

2CO ⟷ C + CO₂

B

CO + H₂O ⟷ CO₂ + H₂

C

C + H₂O ⟷ CO + H₂

D

C + 2H₂O ⟷ CO₂ + 2H₂

A delivery car went from Candleford to Lark Rise and back at an average speed of23 miles per hour. If the distance from Candleford to Lark Rise is 1 mile, and the trip back too half as much time as the trip there, what was the average speed of the delivery car on the way to Lark Rise?

A

13

B

34

C

12

D

23

A delivery cart went from Candle ford to Lark Rise and back at an average speed of 2/3 miles per hour. If the distance from Candle ford to Lark Rise is 1 mile, and the trip back took half as much time as the trip there, what was the average speed of the delivery cart on the way to Lark Rise?

A

1/3

B

3/4

C

1/2

D

2/3

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

Which one is the naturally occuring heaviest element?

A

Mercury

B

Thorium

C

Uranium

D

Protactinium

Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation

A

Pressure falls below the vapour pressure

B

Pressure becomes very high

C

Temperature becomes low

D

All of the above

'Decennial' means consisting of or occuring every ------.

A

five years

B

ten years

C

six years

D

twenty years

The phenomenon occuring during pumping of a liquid solution containing dissolved gases, which may come out of the solution giving rise to gas pockets, is termed as

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