A reaction is \(50\%\) complete in \(2\) hours and \(75\%\) complete in \(4\) hours. The order of reaction is

A \(1\)
B \(2\)
C \(3\)
D \(0\)

Verified Solution

Answer & Solution

Correct Answer

(A) \(1\)

Step-by-step Solution

Detailed explanation

For a first order reaction, to \(0.75=2 \times t_{0.50}\)

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Match List I with List II :

List-I	List-II
(A)	(I) (i) oleum; (ii) \(H _2 O / H ^{+}\) (iii) \(H ^{+}\)
(B)	(II) (i) \(O _2\); (ii) \(H _2 O / H ^{+}\)
(C)	(III) (i) \(CH _3 OH , H ^{+}\); (ii) \(H _2\), catalyst
(D)	(IV) (i) conc. \(H _2 SO _4, \triangle\); (ii) \(H ^{+} / H _2 O\)

Choose the correct answer from the options given below:

NEET 2026 Hard

The Henry's law constant \(\left(\mathrm{K}_H\right)\) values of three gases \((A, B, C)\) in water are \(145,2 \times 10^{-5}\) and \(35\) kbar, respectively. The solubility of these gases in water follow the order:

NEET 2024 Medium

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