What do you mean by Q value of a nuclear reaction?

What do you mean by rate of a reaction?

What do you mean by leaching?

The order of a chemical reaction can be zero and even a fraction but molecularity cannot be zero or a non-integer. What do you mean by the order of a reaction ?

What do you mean by precision?

The hydrolysis of an ester in acid medium is first order reaction. What do you mean by a first order reaction ?

What do you mean by zero order of a reaction?

What do you mean by global warming?