Chemistry · JEE

Factors affecting equilibrium: concentration, pressure, temperature, the effect of catalyst, Le Chatelier's principle Mock Test for JEE

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Syllabus context

Part of Equilibrium in JEE Main Chemistry.

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Q1ChemistryUnit 6: Equilibrium

If the pressure of

N_{2} / H_{2}

mixture in a closed apparatus is 100 atm and

20 \%

of the mixture reacts then the pressure at the same temperature would be:

Q2ChemistryUnit 6: Equilibrium

A catalyst is a substance which:

Q3ChemistryUnit 6: Equilibrium

For the gas phase exothermic reaction,

A_{2}+B_{2} \rightleftharpoons C_{2}

carried out in a closed vessel, the equilibrium moles of

A_{2}

can be increased by: This question has multiple correct options

Q4ChemistryUnit 6: Equilibrium

As per Braun's principle, yield of Ammonia will be more in Haber's process under conditions

\boldsymbol{L}=\operatorname{Low} ; \boldsymbol{H}=\operatorname{high} ; \boldsymbol{T}=\operatorname{Temp} ; \boldsymbol{P}=

Pressure)

Q5ChemistryUnit 6: Equilibrium

The degree of dissociation of

\boldsymbol{P C l}_{5}

Q6ChemistryUnit 6: Equilibrium

Read the given statements and mark the correct option. Statement 1: While fixing a metal rim on a wooden wheel of a cart, the size of the metal rim is kept slightly smaller than that of the wooden wheel. Statement 2: Metals expand on heating and contract on cooling.

Q7ChemistryUnit 6: Equilibrium

Consider the equilibrium set up:

\mathbf{2} \boldsymbol{H}_{\mathbf{2}(\boldsymbol{g})}+\boldsymbol{C} \boldsymbol{O}_{(\boldsymbol{g})} \rightleftharpoons \boldsymbol{C} \boldsymbol{H}_{\boldsymbol{3}} \boldsymbol{O} \boldsymbol{H}_{(\boldsymbol{g})}

What will be the effect of the following on the equilibrium of the reaction? (i) Addition of

\boldsymbol{H}_{2}

(ii) Addition of

\boldsymbol{C H}_{3} \boldsymbol{O H}

(iii) Removal of

\mathrm{CO}

(iv) Removal of

\boldsymbol{C} \boldsymbol{H}_{3} \boldsymbol{O} \boldsymbol{H}

Q8ChemistryUnit 6: Equilibrium

Which of the following will change the value of the equilibrium constant for the reaction?

N_{2}(g)+O_{2}(g) \leftrightharpoons 2 N O(g)

Q9ChemistryUnit 6: Equilibrium

The graph (2) tells us that:

Q10ChemistryUnit 6: Equilibrium

For the equilibrium, the equilibrium concentration of

S O_{3}

will be affected by:

\mathbf{2} \boldsymbol{S} \boldsymbol{O}_{2}(\boldsymbol{g})+\boldsymbol{O}_{2}(\boldsymbol{g}) \rightleftharpoons \boldsymbol{2} \boldsymbol{S} \boldsymbol{O}_{3}(\boldsymbol{g}), \boldsymbol{\Delta} \boldsymbol{H}=

-198 k J

This question has multiple correct options

Q11ChemistryUnit 6: Equilibrium

Whenever a mixture of gases is allowed to come in contact with a particular adsorbent under the same conditions, the more strong adsorbate is adsorbed to a greater extent irrespective of its amount present. For example,

\boldsymbol{H}_{2} \boldsymbol{O}

is adsorbed to more extent on silica gel than

N_{2}

and

O_{2} .

This shows that some adsorbates are preferentially adsorbed. It is also observed that preferentially adsorbable adsorbents can displace a weakly adsorbed substance from the surface of an adsorbent. When temperature is increased:

Q12ChemistryUnit 6: Equilibrium

The degree of dissociation of

\boldsymbol{P C l}_{5}

will be more at

Q13ChemistryUnit 6: Equilibrium

A burning substance will be if the temperature falls below its ignition temperature.

Q14ChemistryUnit 6: Equilibrium

In a small town, the number of water pumps, concrete houses and roads increased. The water table of that place will:

Q15ChemistryUnit 6: Equilibrium

Assertion The reaction of zinc with hydrochloric acid goes to completion in an open container. Reason Hydrogen gas is evolved from the reaction of zinc and hydrochloric acid.

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