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Objective Questions
GS
GS Set-1
Chemistry
Physical Chemistry
280

Physical Chemistry MCQ with Answers

280) Collision theory is applicable to :

First order reaction

Zero order reaction

Bimolecular reaction

Intra-molecular reaction

Answer is:

Bimolecular reaction

Physical Chemistry MCQ with Answers

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Related Physical Chemistry MCQ with Answers

281) The half life of a second order reaction is:

(0.693⁄K)

(K⁄[A_o])

([A₀]⁄K)

(1⁄K[A_o])

Answer is:

(1⁄K[A_o])

282) 16.0 gm of a radioactive substance is reduced to 0.50 g after 2 hours. Then the half life of the radioactive substance is:

12 minutes

24 minutes

20 minutes

15 minutes

Answer is:

24 minutes

283) The decomposition of N₂O into N₂ and O follows the second order kinetics with K = ( 5 x 10 ¹¹ mol⁻¹sec⁻¹) e ^{−29000K⁄T} then, the energy of activation of this reaction is:

241 KJ⁄mol

290 KJ⁄mol

200 KJ⁄mol

392 KJ⁄mol

Answer is:

241 KJ⁄mol

284) On doubling the concentration of reactant, half life of the reaction becomes (1⁄8) times the original vlue. Hence the energy of reverse reaction is:

⁻65 KJ ol⁻¹

55 KJ mol⁻¹

65 KJ mol⁻¹

−75 KJ mol⁻¹

Answer is:

65 KJ mol⁻¹

Physical Chemistry MCQ with Answers

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