In a stabilised soap bubble, pressure inside it compared to external pressure is

A bar of soap has a volume of 18 cubic inches. Jasim used it until it measured 2.75 inches by 2 inches by 1 inch. How many cubic inches of soap did jasim use?

A

14.25

B

5.75

C

8.5

D

12.5

If orange is called butter, butter is called soap, soap is called ink, ink is called honey and honey is called orange, which of the following is used for washing clothes?

A

Honey

B

Butter

C

Orange

D

Ink

Which of the following is used as a binding material in soap to improve soap texture?

A

Rosin

B

Borax

C

Benzyl acetate

D

Sodium carbonate

Soap kettle used in the production of laundry soap is made of

A

Steel with top section nickel clad or stainless steel

B

Cast iron

C

Nickel

D

Concrete

What happens when some charge is placed on a soap bubble?

A

Its radius decreases

B

Its radius increases

C

The bubble Collapses

D

The bubble expands

A soap bubble shows colours when illuminated with white light. This is due to

A

Diffraction

B

Polarisation

C

Interference

D

Reflection

For a given design of bubble cap, the number of bubble caps to be used per tray is set by the

A

Allowable gas velocity through the slots

B

Plate spacing

C

Diameter of the column

D

All of the above

In a certain code, COMPATIBLE is written as BQNPDDKAHS. How is STABILISED written in that code?

A

TUBCJCDRHK

B

JCBUTEDTHM

C

JCBUTCDRHK

D

JCBUTEFTJM

E

None of these

Diameter of bubble caps used in high pressure columns is __________ as compared to that used in identical vacuum columns.

A

Less

B

More

C

Same

D

Either A or B; no generalisation can be made

With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency

A

Increases

B

Decreases

C

Remains same

D

May increase or decrease ; depends on individual design

In a stabilised soap bubble, pressure inside it compared to external pressure is

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