In Orsat's apparatus, ammoniacal cuprous chloride is used for selectivity absorbing

The cuprous chloride used in orsat apparatus can absorb

A

Only CO

B

Both CO and CO₂

C

Both CO and O₂

D

All of the above

Nitrogen present in the flue gas is determined in the orsat apparatus by absorbing it in

A

KOH

B

Ammoniacal cuprous chloride

C

Pyrogallol solution

D

None of these

What is the valency of copper in cuprous oxide?

A

1

B

2

C

3

D

4

A tank contains 10,000 gallons of a solution that is 5 percent sodium chloride by volume. If 2500 gallons of water evaporate from the tank, the remaining solution will be approximately what percent sodium chloride?

A

1.25%

B

3.75%

C

6.25%

D

6.67%

Selectivity of the solvent used in solvent extraction should be

A

1

B

> 1

C

0

A receiver has poor IF selectivity. It will therefore also have poor

A

Blocking

B

Double-spotting

C

Diversion reception

D

Sensitivity

The superhetrodyne principle provides selectivity at ___________ stage

A

RF

B

IF

C

audio

D

Before RF

If a high degree of selectivity is desired, then double-tuned circuit should have ___________ coupling

A

Loose

B

Tight

C

Critical

D

None of the above

In which of the following unit operations, the selectivity is an important parameter?

A

Distillation

B

Solvent extraction

C

Absorption

D

None of these

In liquid extraction, if the selectivity is unity, then

A

Separation of the constituents is the most effective

B

No separation will occur

C

Amount of solvent required will be minimum

D

Solvent flow rate should be very low

In Orsat's apparatus, ammoniacal cuprous chloride is used for selectivity absorbing

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