JEE Main 12 Jan 2019 Morning Question 14
Question: Decomposition of X exhibits a rate constant of $ 0.05\mu g/year $ . How many years are required for the decomposition of $ 5\mu g $ of X into $ 2.5\mu g $ ? [JEE Main Online Paper Held On 12-Jan-2019 Morning]
Options:
A) 25
B) 50
C) 20
D) 40
Show Answer
Answer:
Correct Answer: B
Solution:
According to unit of rate constant it is a zero order reaction,
then half life of zero order reaction $ {{t} _{1/2}}=\frac{C _0}{2k}=\frac{5}{2\times 0.05}=50,years $
