The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to

Initial pressure of oxygen introduced into the 'bomb' of the bomb calorimeter for determination of calorific value of coal/fuel oil may be around __________ atm.

A

3-5

B

25-30

C

60-65

D

95-100

The 'bomb' in the bomb calorimeter is made of

A

Molybdenum stainless steel

B

Mild steel

C

High silicon iron (14% Si)

D

Copper

In silvery paints, the main constituent present is

A

Aluminium powder

B

Silver powder

C

Lead powder

D

White lead

Bomb calorimeter is used to determine

A

Higher calorific value at constant volume

B

Lower calorific value at constant volume

C

Higher calorific value at constant pressure

D

Lower calorific value at constant pressure

Bomb calorimeter is used to determine the (where, GCV - Gross Calorific Value. NCV - Net Calorific Value.)

A

GCV at constant pressure

B

GCV at constant volume

C

NCV at constant pressure

D

NCV at constant volume

Bomb calorimeter can be used to determine the __________ of the coal.

A

Sulphur content

B

Calorific value

C

Both A & B

D

Neither A nor B

Bomb calorimeter is used for the determination of calorific value of the __________ fuels.

A

Gaseous

B

Solid

C

Liquid

D

Both B and C

Calorific value as determined by bomb calorimeter is the

A

Higher calorific value at constant volume

B

Gross calorific value at constant pressure

C

Lower calorific value at constant pressure

D

Net calorific value at constant volume

During its calorific value determination by bomb calorimeter, coal is combusted by

A

Air

B

Oxygen

C

Oxygen enriched air

D

None of these

If 2 kg of metal, of which 1/3 is zine and the rest is copper , be mixed with 3 kg of metal, of which 1/4 is zinc and the rest is copper , then what will be the ratio of zinc to copper in the mixture?

A

17 : 43

B

13 : 42

C

19 : 43

D

15 : 42

The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to

Related Questions