MCQ
A chemical reaction is at equilibrium when
  • A
    Reactants are completely transformed into products
  • The rates of forward and backward reactions are equal
  • C
    Formation of products is minimised
  • D
    Equal amounts of reactants and products are present

Answer

Correct option: B.
The rates of forward and backward reactions are equal
b
If the rate of forward reaction equals rate of backward reaction, then the reaction is said to be in equilibrium. At this stage, there is no further change in the concentrations of reactants as well as products.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Group $13$ elements show $+1$ and $+3$ oxidation states. Relative stability of $+3$ oxidation state may be given as
In which of the following reaction $H_2O_2$ acts as reducing agent 
$(I)$ $H_2O_2 + 2H^+ + 2e^-\to 2H_2O$
$(II)$ $H_2O_2 + 2e^-\to O_2 + 2H^+$
$(III)$ $H_2O_2 + 2e^-\to 2 OH^-$
$(IV)$ $H_2O_2 + 2OH^-+ 2e^-\to O_2 + 2H_2O$
Which of the following glass is used in making wind screen of automobiles
In which of the following reactions, two products will be formed other than  phosphonium ylide $(POPh_3)$
$\begin{array}{*{20}{c}}
  {C{H_3} - CH - C{O_2}K} \\ 
  {|\,\,\,\,\,\,\,\,} \\ 
  {C{H_3} - CH - C{O_2}K} 
\end{array}\xrightarrow{{electrolysis}}(A)\,(Major)$

Major product $(A)$ of the above reaction

The $K_a$ of monobasic acid $A, B$ and $C$ are $10^{-6}, 10^{-8}$ and $10^{-10}$ respectively. The concentrations of $A, B$ and $C$ are respectively. $0.1\,M$, $0.01\, M$ and $0.001\, M$. Which of the following is correct for $pOH$ of $A, B$ and $C$ ?
In which of the following species the central $C$- atom is negatively charged
The set representing the correct order of first ionisation potential is :
An element has the electronic configuration $1{s^2},2{s^2}2{p^6},$ $3{s^2}3{p^6}3{d^5},\,4{s^1}$. It is a
Given below are two statements:

Statement $I:$ $SO _2$ and $H _2 O$ both possess V-shaped structure.

Statement $II:$ The bond angle of $SO _2$ is less than that of $H _2 O$.

In the light of the above statements, choose the most appropriate answer from the options given below: