List of top Chemistry Questions on Chemical Kinetics asked in Rajasthan PMT

In the respect of the equation $ k=A{{e}^{-{{E}_{a}}/RT}} $ in chemical kinetics, which one of the following statements is correct?

In a chemical reaction two reactants takes part. The rate of reaction is directly proportional to the concentration of one of them and inversely proportional to the concentration of the other. The order of reaction is:

Sodium pyrophosphate is represented by which of the following formula?