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question_answer1)
In any chemical reaction, equilibrium is supposed to be establish when [CPMT 1974, 80, 89; EAMCET 1975, 77, 79; MP PMT 1990; NCERT 1980; MP PET 1995]
A)
Mutual opposite reactions undergo done
clear
B)
Concentration of reactants and resulting products are equal done
clear
C)
Velocity of mutual reactions become equal done
clear
D)
The temperature of mutual opposite reactions become equal done
clear
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question_answer2)
Which of the following conditions represents an equilibrium
A)
Freezing of ice in a open vessel, temperature of ice is constant done
clear
B)
Few drops of water is present along with air in a balloon, temperature of balloon is constant done
clear
C)
Water is boiling in an open vessel over stove, temperature of water is constant done
clear
D)
All the statements A, B and C are correct for the equilibrium done
clear
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question_answer3)
When rate of forward reaction becomes equal to backward reaction, this state is termed as [NCERT 1975, 80; CPMT 1973, 74, 77]
A)
Chemical equilibrium done
clear
B)
Reversible state done
clear
C)
Equilibrium done
clear
D)
All of these done
clear
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question_answer4)
In chemical reaction \[A\]⇌\[B\], the system will be known in equilibrium when [MP PMT 1990; NCERT 1977]
A)
A completely changes to B done
clear
B)
50% of A changes to B done
clear
C)
The rate of change of A to B and B to A on both the sides are same done
clear
D)
Only 10% of A changes to B done
clear
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question_answer5)
A chemical reaction is at equilibrium when [NCERT 1975; CPMT 1974; MP PMT 1996; KCET 1993; IIT 1978; Manipal MEE 1995; Pb. PMT 2002]
A)
Reactants are completely transformed into products done
clear
B)
The rates of forward and backward reactions are equal done
clear
C)
Formation of products is minimised done
clear
D)
Equal amounts of reactants and products are present done
clear
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question_answer6)
In the chemical reaction \[{{N}_{2}}+3{{H}_{2}}\]⇌\[2N{{H}_{3}}\] at equilibrium point, state whether [NCERT 1977]
A)
Equal volumes of \[{{N}_{2}}\] and \[{{H}_{2}}\] are reacting done
clear
B)
Equal masses of \[{{N}_{2}}\] and \[{{H}_{2}}\] are reacting done
clear
C)
The reaction has stopped done
clear
D)
The same amount of ammonia is formed as is decomposed into \[{{N}_{2}}\] and \[{{H}_{2}}\] done
clear
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question_answer7)
For the reaction \[PC{{l}_{3}}(g)+C{{l}_{2}}(g)\] ⇌ \[PC{{l}_{5}}(g)\] the position of equilibrium can be shifted to the right by [MP PMT 2004]
A)
Increasing the temperature done
clear
B)
Doubling the volume done
clear
C)
Addition of \[C{{l}_{2}}\] at constant volume done
clear
D)
Addition of equimolar quantities of \[PC{{l}_{3}}\]and \[PC{{l}_{5}}\] done
clear
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question_answer8)
If a system is at equilibrium the rate of forward to the reverse reaction is [UPSEAT 2004]
A)
Less done
clear
B)
Equal done
clear
C)
High done
clear
D)
At equilibrium done
clear
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question_answer9)
Chemical equilibrium is dynamic in nature because [IIT 1977]
A)
Equilibrium is maintained rapidly done
clear
B)
The concentration of reactants and products become same at equilibrium done
clear
C)
The concentration of reactants and products are constant but different done
clear
D)
Both forward and backward reactions occur at all times with same speed done
clear
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question_answer10)
The number of gram molecules of a substance present in unit volume is termed as [MP PMT 1993]
A)
Activity done
clear
B)
Normal solution done
clear
C)
Molar concentration done
clear
D)
Active mass done
clear
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