Atomos Test Generator Free PYQs ExamsMy practice Log in / Sign up free

Chemical Kinetics

AIPMT 2006MCQEasy📈 Topic in 12% papers+4−1
Ques. 1AIPMT 2006

Consider the reaction : N2(g) + 3H2(g) 2NH3(g) The equality relationship between d[NH3]dt and - d[H2]dt is

  1. d[NH3]dt = - d[H2]dt
  2. d[NH3]dt = - 13 d[H2]dt
  3. + d[NH3]dt = - 23 d[H2]dt
  4. + d[NH3]dt = - 32 d[H2]dt

Answer

(3) + d[NH3]dt = - 23 d[H2]dt

Solution

As per NCERT, rate of reaction = - d[N2]dt = - 13 d[H2]dt = + 12 d[NH3]dt

⇒ 12 d[NH3]dt = - 13 d[H2]dt

∴ + d[NH3]dt = - 23 d[H2]dt

Answer: (3)

Keep practising — Chemical Kinetics

Ques. 2AIPMT 2006

For the reaction, 2A + B 3C + D, which of the following does not express the reaction rate?

  1. - d[A]2dt
  2. - d[C]3dt
  3. - d[B]dt
  4. d[D]dt
Ques. 3AIPMT 2005

The rate of reaction between two reactants A and B decreases by a factor of 4 if the concentration of reactant B is doubled. The order of this reaction with respect to reactant B is

  1. 2
  2. -2
  3. 1
  4. -1
Ques. 4AIPMT 2005

For a first order reaction A B the reaction rate at reactant concentration of 0.01 M is found to be 2.0 10-5 mol L-1 s-1. The half-life period of the reaction is

  1. 30 s
  2. 220 s
  3. 300 s
  4. 347 s
Ques. 5AIPMT 2004

The rate of a first order reaction is 1.5 10-2 mol L-1 min-1 at 0.5 M concentration of the reactant. The half-life of the reaction is

  1. 0.383 min
  2. 23.1 min
  3. 8.73 min
  4. 7.53 min
Ques. 6AIPMT 2003

The temperature dependence of rate constant (k) of a chemical reaction is written in terms of Arrhenius equation, k = A e-E*/RT. Activation energy (E*) of the reaction can be calculated by plotting

  1. k vs T
  2. k vs 1 T
  3. log k vs 1T
  4. log k vs 1 T
Ques. 7AIPMT 2003

If the rate of the reaction is equal to the rate constant, the order of the reaction is

  1. 0
  2. 1
  3. 2
  4. 3
Ques. 8AIPMT 2003

The reaction A B follows first order kinetics. The time taken for 0.8 mole of A to produce 0.6 mole of B is 1 hour. What is the time taken for conversion of 0.9 mole of A to produce 0.675 mole of B?

  1. 1 hour
  2. 0.5 hour
  3. 0.25 hour
  4. 2 hours
Ques. 9AIPMT 2003

The activation energy for a simple chemical reaction A B is Ea in forward direction. The activation energy for reverse reaction

  1. is negative of Ea
  2. is always less than Ea
  3. can be less than or more than Ea
  4. is always double of Ea
Ques. 10AIPMT 2003

The radioisotope, tritium (13H) has a half-life of 12.3 years. If the initial amount of tritium is 32 mg, how many milligrams of it would remain after 49.2 years?

  1. 1 mg
  2. 2 mg
  3. 4 mg
  4. 8 mg
Ques. 11AIPMT 2002

2A B + C It would be a zero order reaction when

  1. the rate of reaction is proportional to square of concentration of A
  2. the rate of reaction remains same at any concentration of A
  3. the rate remains unchanged at any concentration of B and C
  4. the rate of reaction doubles if concentration of B is increased to double

All Chemical Kinetics PYQs →

PDFDownload Chemical Kinetics PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇
All NEET Chemistry chapters
Physical ChemistrySome Basic Concepts of ChemistryStructure of AtomStates of MatterThermodynamicsEquilibriumRedox ReactionsSolid StateSolutionsElectrochemistryChemical KineticsSurface Chemistry
Inorganic ChemistryClassification of Elements and Periodicity in PropertiesChemical Bonding and Molecular StructureHydrogens-Block Elementsp-Block Elements (Group 13 & 14)Environmental ChemistryGeneral Principles of Isolation of Elementsp-Block Elements (Group 15–18)d- and f-Block ElementsCoordination Compounds
Organic ChemistryOrganic Chemistry – Some Basic Principles and TechniquesIsomerismHydrocarbonsHaloalkanes and HaloarenesAlcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAminesBiomoleculesPolymersChemistry in Everyday LifePrinciples Related to Practical Chemistry