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Chemistry Class 10 Chapter 9 - Chemical Equilibrium - 3
1.
In law of mass action, the concentration of reactants and products are expressed in terms of?
a) ( )
b) { }
c) <>
d) [ ]
2.
Which one of the following is a true form of law of mass action?
a) kr [A]a [D]d = kf [B]b [C]c
b) kf [C]c [D]d = kr [A]a [B]b
c) kf [A]a [C]c = kr [B]b [D]d
d) kf [A]a [B]b = kr [C]c [D]d
3.
The rate constant for reverse reaction is?
a) kf
b) kr
c) kc
d) ks
4.
The rate constant for forward reaction is?
a) kf
b) kc
c) Kc
d) kr
5.
In law of mass action, the equilibrium constant is?
a) ks
b) Kc
c) kf
d) kr
6.
In law of mass action, the concentration of products is taken in the?
a) squares
b) numerator
c) denominator
d) root
7.
In law of mass action, the concentration of the reactants is taken in the?
a) numerator
b) denominator
c) root
d) square
8.
The ratio of the product of the concentration of products to the product of concentration of reactants each raised to the power equal to the coeffecient in the balanced chemical equation is known as?
a) law of mass action
b) equilibrium constant
c) equilibrium variable
d) law of thermodynamics
9.
Which one of the following is a condition for chemical equilibrium?
a) no change in the concentration of reactants and products
b) constant P and V of the system
c) all of these
d) constant temperature of system
10.
Kc depends upon?
a) temperature
b) both of these
c) initial concentration of reactants
d) none of these
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