The rate of forward reaction, at chemical equilibrium is____the rate of backward reaction.

Chemical potential (an intensive property) of a substance is a force that drives the chemical system to equilibrium and is equal to its partial molar properties. The reatio of chemical potential to free energy of a pure substance at oconstant temperature and pressure is

A

0

B

1

C

∞

D

None of these

Two substances are in equilibrium in a reversible chemical reaction. If the concentration of each substance is doubled, then the value of the equilibrium constant will be

A

Same

B

Doubled

C

Halved

D

One fourth of its original value

In a reversible chemical reaction having two reactants in equilibrium, if the concentration of the reactants are doubled, then the equilibrium constant will

A

Remain the same

B

Be halved

C

Also be doubled

D

Become one fourth

Hummingbirds are the only birds __________ flying backward as well as forward, up and down.

A

able

B

able to

C

capable for

D

capable of

Fqra cold viscous feed, backward feed gives __________ than forward feed.

A

A higher capacity

B

A lower capacity

C

Lower economy

D

None of these

The advantage of backward feed multiple effect evaporators over forward feed units is that

A

Heat sensitive material can be handled

B

There is no additional cost of pumping

C

Most concentrated liquid is at highest temperature

D

Equal heat transfer co-efficients exist in various effects

For a cold dilute feed to produce thick viscous liquor, backward feeding as compared to forward feeding results in

A

Increased economy

B

Decreased economy

C

Lower capacity

D

No effect on economy

A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides

A

Higher economy

B

Lower capacity

C

Both A & B

D

Lower economy

For hot feed, forward feeding as compared to backward feeding results in __________ economy.

A

Increased

B

Decreased

C

No effect on

D

None of these

Which of the following will favour the reverse reaction in a chemical equilibrium reaction?

A

Increasing the concentration of one of the reactants

B

Increasing the concentration of one or more of the products

C

Removal of at least one of the products at regular interval

D

None of these

The rate of forward reaction, at chemical equilibrium is____the rate of backward reaction.

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