| 1 |
Which statement is true about order of reaction :
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A. Order of reaction can only be determined by an experiment.
B. Order of reaction can be determined from a balance equation only.
C. Order of reaction increase by increasing temperature.
D. Order of reaction must be in whole number and not in fraction.
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| 2 |
In the hydrolysis of CH3COOC2H5the acid produced is
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A. Inhibitor
B. Catalyst
C. Auto catalyst
D. None of above
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| 3 |
Which statement about Arrhenius equation is incorrect
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A. Factor 'A' called Arrhenius constant depends upon collision frequency of reactants
B. Rate of reaction increase by increasing temperature
C. Rate constant k is increased
D. Activation energy Ea is decreased by rise in temperature
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| 4 |
The number of atoms or molecules whose concentrations determine the rate of the reaction is called
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A. Molecularity
B. Order
C. Rate of reaction
D. Rate constant
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| 5 |
which one of the following is a heteroheneous catalysis
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| 6 |
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A. Homogeneous
B. Heterogeneous
C. Isogeneous
D. None
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| 7 |
The addition of a catalyst to a reaction changes the
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A. Enthalpy
B. Entropy
C. Nature of reactants
D. Energy of activation
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| 8 |
The example of a photo chemical reaction is photosynthesis has order of reaction :
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A. 1
B. 2
C. 0
D. 3
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| 9 |
A zero order reaction is one in which :
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A. Rate is not affected by changing concentration of reactants.
B. concentration of reactants do not change with the passage of time.
C. Reactants do not react.
D. One reactants in large excess.
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| 10 |
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A. Diastase
B. Lipase
C. Inverters
D. Zymase
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| 11 |
A white precipitate ofsilver chlorideimmediately formed on additionof :
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A. Silver nitrate solution to sodium chloride solution.
B. Silver chloride solution to sodium nitrate solution.
C. Silver nitrate solution to potassium chloride solution
D. Silver nitrate solution to hydrogen chloride solution.
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| 12 |
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A. Measuring pH
B. Measuring density
C. Titration against standard NaOH
D. Titration against standard KMnO4solution
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| 13 |
If initial concentration of the reactants and half life period of the reaction is known, then we can determine
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A. Average rate of reaction
B. Order of reaction
C. Rate constant k
D. Instantaneous rate
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| 14 |
The catalytic activity of Pt is much higher when
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A. It is mixed with asbestos
B. It is mixed with Pd
C. It is mixed with arsenic
D. In is made colloidal platinum
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| 15 |
In zero order reaction, the rate is independent of :
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A. Temperature of reaction
B. Concentration ofreactants
C. Concentration of products
D. None of these.
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| 16 |
When the rate of reaction is entirely independent of the conc. of reaction molecules then order of reaction is
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A. Zero
B. First
C. Second
D. Third
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| 17 |
The rate equation for a reaction is Rate =k[A]. what are unit of K ?
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| 18 |
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A. Rate is independent of concentration of water since it is in excess
B. Rate is independent of concentration of ester since it is in exces
C. Rate depends upon the concentration of acid catalyst added
D. Rate = k[CH3COOC2H5]1/2[H2O]1/2
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| 19 |
The experimental relationship between a reaction rate and the concentration of reactants is called
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A. Order or reaction
B. Rate law
C. Activated complex
D. Molecularity
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| 20 |
Half life period of N2O5is 24 minutes and it remains same where we increase or decrease its initial concentration, then reactions
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A. Zero order
B. First order
C. Second order
D. Third order
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| 21 |
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A. Three times
B. Six times
C. Nine times
D. Two times
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| 22 |
Which one of the following reaction rate is effected by the light
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| 23 |
Rate law of an equation is obtained :
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A. From a balance equation.
B. Can be calculated theoretically as well as determined experimentally.
C. It is only calculated theoretically.
D. Experimentally.
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| 24 |
Refrectrometric method is used when
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A. Reactions involving absorption of I.R. or U. V
B. Reactions involving change of refractive index
C. Reactions involving ions
D. Change of optical activity
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| 25 |
Activation energy is the difference of energy between the energy of the reactant and
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A. The product
B. The activated complex
C. Both a and b
D. None of these
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| 26 |
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A. 1st order
B. 2nd order
C. Zero order
D. 3rd order
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| 27 |
The chemical method used for determination of rate of reaction is
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A. Spectroscopic
B. Conductiometric
C. Refractometric
D. Titration
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| 28 |
The unit of rate of reaction is
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A. mole dm-3
B. mole Kg-1
C. moles dm-3sec-1
D. grams dm-3
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| 29 |
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A. Zero
B. 1
C. 2
D. 1.5
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| 30 |
Which statement is not correct
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A. Enzymes catalyst a specific reaction
B. Enzymes show catalytic activity at a specific temperature
C. The catalytic activity of enzymes is stopped if optimum pH is changed
D. The catalytic activity is poisoned by a co-enzymes
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