JEE Chemistry - MCQ Practice Questions
Chemistry carries the highest scoring potential in JEE for anyone who keeps the three branches separate in revision. This set covers physical chemistry numericals, organic reaction mechanisms and named reactions, and inorganic chemistry including periodic trends, chemical bonding and coordination compounds. Organic questions show the mechanism arrow by arrow, so the reasoning transfers to reactions you have not seen before.
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The decomposition of N₂O₅ is a first-order reaction. If 50% decomposes in 30 minutes, what is the rate constant?
In the reaction A → Products, doubling [A] increases rate by 4 times. The order of reaction is:
For an elementary reaction: 2A + B → Products, the rate law is:
Which statement about potential energy diagrams is CORRECT?
The integrated rate law for second-order reaction is 1/[A] = 1/[A]₀ + kt. If [A]₀ = 0.5 M, k = 0.4 M⁻¹s⁻¹, find [A] after 5 seconds
The half-life of a second-order reaction is 100 s when initial concentration is 0.5 M. What is the rate constant?