Use of water as a manometric liquid suffers from the disadvantage of its

Small furnace draught is accurately measured by an inclined tube manometer, in which the manometric liquid used most commonly is

A

Water

B

Carbon tetrachloride

C

Paraffin

D

Ethylene glycol

Which of the following is a commonly used manometric liquid for low pressure range?

A

Ethyl alcohol

B

Carbon tetrachloride

C

Glycerol

D

Ethylene glycol

Which of the following is an undesirable property of a manometric liquid?

A

Non-sticky & non-corrosive nature

B

High vapour pressure

C

Low viscosity & surface tension

D

Low co-efficient of thermal expansion

A batch reactor suffers from following disadvantage.

A

Poor product quality control

B

High labour and handling cost

C

High shutdown time requirement for emptying, cleaning and refilling

D

All of the above

Assam coals suffers mainly from the disadvantage of high __________ content.

A

Ash

B

Volatile matter

C

Sulphur (4-6%)

D

Moisture

Batch tray dryers suffers from the disadvantage of

A

High maintenance cost

B

Non-uniform & low production rate

C

High labour cost & low heat economy

D

All of the above

Aluminium as a material of construction suffers from the disadvantage of

A

Very high cost

B

Rather low tensile strength

C

Very low strength to weight ratio

D

Scarce availability

Manometric head, in case of a centrifugal pump, is equal to

A

Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe

B

Work-done per kN of water Losses within the impeller

C

Energy per kN at outlet of impeller Energy per kN at inlet of impeller

D

All of the above

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%

The angle of contact between a glass capillary tube of length 10 cm and a liquid is 90 degree . If the capillary tube is dipped vertically in the liquid, then the liquid:

A

Will rise in the tube

B

Will get depressed in the tube

C

Will rise -up to 10 cm in the tube and will over flow

D

Will neither rise nor fall in the tube.

Use of water as a manometric liquid suffers from the disadvantage of its

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