Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of

The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and re-condensed, then the liquid with the next higher boiling point is then evaporated and re-condensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called

A

Cracking

B

Fractional distillation

C

Full distillation

D

Carbonisation

In a class of 60 students, 20 students like Math, 25 students like English and 30 students like Science. If 5 Students like both Math and Science, 8 Students like both English and Science and 3 students like neither of these subjects, how many students like all of the three subjects?

A

2

B

3

C

4

D

5

When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.

A

Continuous

B

Steam

C

Azerotropic

D

None of these

Lymphocytic predominance in CSF is found in

A

Tubercular meningitis

B

Fungal meningitis

C

Viral meningitis

D

Meningococcal meningitis

E

Subarachnoid hemorrhage

The industrial region of India which has the predominance of metal industries is:

A

Penisular Region

B

Chotanagpur Region

C

Delta Region

D

Brahmputra Region

Road grade bitumen is produced from vacuum residue by its

A

Aeration

B

Pyrolysis

C

Hydrogenation

D

Steam reforming

Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil

A

Gives higher yield of petrol

B

Lower octane number of petrol

C

Higher sulphur content in the product

D

Higher gum forming material in petrol

The most suitable solvent for deasphalting vacuum residue is

A

Propane

B

Methyl ethyl ketone

C

Doctor's solution

D

Methanol amine

In case of __________ boiling, the liquid temperature is below the saturation temperature and the boiling takes place in the vicinity of the heated surface.

A

Nucleate

B

Local

C

Pool

D

Saturated

Flash point of atmospheric distillation residue is determined by __________ apparates.

A

Pensky-Martens (closed cup type)

B

Abel

C

Cleveland (open cup type)

D

None of these

Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of

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