NEET 2026 (Phase 1) · ChemistryIntegrated ratePrevious Year Question
For a certain reaction , the plot of concentration versus time is a straight line with a constant negative slope, as shown in the graph. The order of the reaction is:
Answer: (A) . \textbf{Answer:} (A) \textbf{Solution:} For a zero-order reaction, the integrated rate law is: This is the equation of a straight line in vs with a constant negative slope equal to .
![NEET 2026 (Phase 1) Chemistry question — For a certain reaction R -> Product, the plot of concentration [R] versus time is a…](https://firebasestorage.googleapis.com/v0/b/halal-neet--masha-allah.firebasestorage.app/o/pyq_images%2FChemicalKinetics%2Fck_pyq_2026_75.png?alt=media&token=408a3b2e-2b4c-4b40-a0a5-844e48a713cb)
- A.✓
- B.
- C.
- D.
Correct Answer
(A)
Solution & Explanation
\textbf{Answer:} (A) \textbf{Solution:} For a zero-order reaction, the integrated rate law is: This is the equation of a straight line in vs with a constant negative slope equal to . Since the given plot is a straight line with constant negative slope, the reaction is zero order.
🎯
43,000+ questions in हिंदी & English · one-tap toggle
Open →📚Practice all NEET Chemistry PYQs chapter-wise →💡Don't get it? Learn the Chemical Kinetics concepts →Practice NEET 2026 (Phase 1) Chemistry — free, with instant solutions
43,000+ NEET questions solved step-by-step, chapter-wise, in the MedicNEET app.
More NEET PYQ solutions
ChemIf the rate constant of a reaction is 0.03 s-1, how much time does it take for 7.2 mol L-1 concentration of the reactant to get reduced to 0.9 mol L-1? (Given: 2 = 0.301)ChemIf the half-life t1/2 for a first order reaction is 1 minute, then the time required for 99.9% completion of the reaction is closest toChemThe given graph (drawn at constant temperature T) is a representation of the kinetics of a reaction. The plot of y versus x is a horizontal straight line parallel to the x-axis, i.e. y is constant and independent of x. The y and x axes for zero order and first order reactions, respectively, are:ChemFor a first order reaction A -> Products, initial concentration of A is 0.1 M, which becomes 0.001 M after 5 minutes. Rate constant for the reaction in min-1 is:ChemThe rate constant for a first order reaction is 4.606 10-3 s-1. The time required to reduce 2.0 g of the reactant to 0.2 g is:ChemA first order reaction has a rate constant of 2.303 10-3 s-1. The time required for 40 g of this reactant to reduce to 10 g will be (Given 10 2 = 0.3010):ChemIf the rate constant for a first order reaction is k, the time t required for the completion of 99% of the reaction is given by:ChemWhich one of the following statements correctly describes the difference between a first-order and a second-order reaction?