In which of the following gaseous phase reversible reactions, the product yield can not be increased by the application of high pressure?

In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ?

A

$$2{{\text{O}}_3} \rightleftharpoons 3{{\text{O}}_2}$$

B

$${{\text{N}}_2} + {{\text{O}}_2} \rightleftharpoons 2{\text{NO}}$$

C

$$2{\text{N}}{{\text{O}}_2} \rightleftharpoons {{\text{N}}_2}{{\text{O}}_4}$$

D

$$2{\text{S}}{{\text{O}}_2} + {{\text{O}}_2} \rightleftharpoons 2{\text{S}}{{\text{O}}_3}$$

With an increase in pressure in gaseous phase chemical reactions, the fractional conversion __________ when the number of moles decreases.

A

Increases

B

Decreases

C

Remains unaffected

D

Unpredictable from the data

For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant

A

Is independent of pressure

B

Increases with pressure

C

Decreases with pressure

D

Increases /decreases with pressure depending on the stoichiometric co-efficients of the reaction

The expression for the work done for a reversible polytropic process can be used to obtain the expression for work done for all processes, except reversible __________ process.

A

Isobaric

B

Isothermal

C

Adiabatic

D

None of these

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 the gaseous diffusion process of uranium enrichment, the natural uranium is converted into gaseous

A

Uranium oxide

B

Uranium hexaflouride

C

Uranium carbide

D

Uranium sulphate

Scheme-1: C6H5N2Cl→CuCNC6H5CN→H2o/H+C6H5COOH→∆Product-I Scheme-2: C6H5NO2→Fe/HCLC6H5NH2→N2NO3+HCL, 273KC6H5N2Cl→H2O/H+Product-II Scheme-3: CH3COOH→NH3CH3CONH2→NaOBrProduct-III উল্লিখিত Scheme সমূহে Product-I, Product-II এবং Product-III হলো যথাক্রমেঃ

A

C6H5COONH4, C6H5Cl and CH3OH

B

C6H5CONH2, C6H5NH2 and CH3OH

C

C6H5CONH2, C6H5NH2 and CH3NH2

D

C6H5CONH2, C6H5OH and CH3OH

In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.

A

Equal to

B

Less than

C

More than

D

None of these

While dissolving a gas into a liquid at a constant temperature, the ratio of the concentration of the gas in the solution phase and in the gaseous phase is

A

Infinity

B

Unity

C

Constant

D

Negative

A process of heating crude oil to a high temperature under a very high pressure to increase the yield of lighter distillates, is known as

A

Cracking

B

Carbonization

C

Fractional distillation

D

Full distillation

In which of the following gaseous phase reversible reactions, the product yield can not be increased by the application of high pressure?

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