Zero Order Reaction

Q. The initial rate of zero order reaction of the gaseous reaction A(g) $\to$ 2B(g) is ${10}^{-2}$ M/min. If the initial concentration of A is 0.1 M, what would be the concentration of B after 60 sec?

1. 0.02 M
2. 0.002 M
3. 0.09 M
4. 0.01 M

Q. Consider the zero order reaction
$R\to P$
Starting with 4 moles of R in a one litre container, after half an hour only 1 mole of R is left unreacted. The value of k for the reaction is:

1. $0.1mol{L}^{-1}mi{n}^{-1}$
2. $1mol{L}^{-1}mi{n}^{-1}$
3. $0.4mol{L}^{-1}mi{n}^{-1}$
4. $0.3mol{L}^{-1}mi{n}^{-1}$

Q.

Match the following
Order of reaction Half-life period
1)1st order reaction a) $(k{a}_0{)}^{-1}$
2) Second order reaction b) $\frac{0.693}{k}$
3) Zero order reaction c) $\frac{a_0}{2k}$

1. 1-a , 2-b, 3-c
2. 1-b, 2-a, 3-c
3. 1-b, 2-c, 3-a
4. 1-c, 2-b, 3-a

Q. Sita have to select one reaction out of zero order, first order, second order, third order reaction such that the rate of reaction is constant throughout the reaction which one, of the following she has to select?

1. first order reaction
2. Second order reaction
3. Zero order reaction
4. third order reaction

Q. A first order reaction is 60% complete in 20 minutes. How long will the reaction take to be 84% complete?

1. 68 mins
2. 76 mins
3. 54 mins
4. 40 mins