Question

When two reactants, A and B are mixed to give products, C and D, the reaction quotient, (Q) at initial stages of the reaction

• A. is zero
• B. decreases with time
• C. is independent of time
• D. increases with time

Answer 1

The correct option is D increases with time

$A+B\leftrightharpoons C+DQ=\frac{\left[C\right]\left[D\right]}{\left[A\right]\left[B\right]}$
As time passes, amount of produts 'C' and 'D' increases, hence Q increases.