Exothermic reactions are best carried out in

Autocatalytic reactions are best carried out in a

A

CSTR

B

CSTR in series

C

Plug flow reactor

D

Recycle reactor

Pick out the exothermic reaction out of the following:

A

C + H₂O = CO + H₂

B

CaC₂ + H₂O = Ca(OH)₂ + C₂H₂

C

MgCO₃ = MgO + CO₂

D

All of the above

Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C.

A

400-500

B

900-1000

C

1400-1500

D

1700-1800

In case of staged packed bed reactors carrying out exothermic reaction, use

A

High recycle for pure gas

B

Plug flow for dilute liquid requiring no large preheating of feed

C

Cold shot operations for a dilute solution requiring large preheating to bring the stream upto the reaction temperature

D

All of the above

Which phase change is an example of an exothermic process?

A

Liquid to Solid

B

Gas to Solid

C

Gas to Liquid

D

All the above

Which of the following is a characteristic of an exothermic reaction?

A

Release of heat

B

Absorption of heat

C

Doesn't involve any change in temperature

D

None of the option is correct

What is an exothermic reaction?

A

Reaction in which heat is released.

B

Reaction in which heat is absorbed.

C

Reaction in which neither heat is released nor absorbed.

D

None

In an exothermic chemical reaction, the reactants compared to the products have

A

Higher temperature

B

More energy

C

Less energy

D

Same energy

A typical example of an exothermic reversible reaction conducted at high pressure in industry is

A

Dehydration of ethanol

B

Methanol synthesis

C

Reformation of methane

D

Polymerisation of ethylene

From among the following, choose one which is not an exothermic process.

A

Methanol synthesis

B

Catalytic cracking

C

Ammonia synthesis

D

Oxidation of sulphur

Exothermic reactions are best carried out in

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