Zero Order Reaction

Q. Half-life period of zero order reaction is

1. Independent of initial concentration of reactants
2. Proportional to initial concentration of reactants
3. Inversely proportional to initial concentration of reactants
4. Inversely proportional to square of initial concentration of reactants.

Q. The time required to $100\%$ completion of zero order reaction is (a is initial concentration and K is rate constant)

1. $aK$
2. $\frac{2K}{a}$
3. $\frac{a}{2K}$
4. $\frac{a}{K}$

Q.

What happens to the half-life period for a first-order reaction, if the initial concentration of the reactants is increased?

1. Increases

2. Decreases

3. Remains unchanged

4. Increases and then decreases.

Q. What is the graph (concentration vs time) of zero order reaction look like?

1. 
2. 
3. 
4. 

Q.

The rate constant of the reaction $A\to B$ is $0.6\times {10}^{-3}$ mole per second. If the concentration of B after 20 min is:

1. 0.72 M

2. 1.08 M

3. 3.60 M

4. 0.36 M