Question # 1

the rate of reaction when concentration of reactants are taken unity is called.

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Average rate

Instantaneous rate

Specific rate

Rate equation

Velocity constant is the rate of reaction when the concentrations of reactants are

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Zero

Unity

Two

Three

The unit of rate constant is same as that of rate of reaction in

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first order reaction

Second order reaction

Third order reaction

Zero order reaction

Which properties of liquid is measured by polarimeter

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Conductance

Refractive index

Optical activity

Change in volume

Which statement is incorrect about activated complex

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Short lived

Maximum energy

Unstable combination of atoms

Less energy than Ea

The true representation for the units of rate constant K for the first order reaction

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sec^-1

mole dm^-3s

mole dm^-3s^-1

mole^-1dm⁺³s^-1

Glucose can be converted into ethanol by an enzyme.

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Lipase

Zymase

Sucrose

Urease

a zero order reaction is one is which

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Reactants do not react

One reactant is in large excess

Concentration of reactant do not change with passage of time

Rate is of affected by changing concentration of reactants

The influence of temperature on reaction rate is predicated by

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Free energy change of reaction

Arrhenius equation

Van der weal's equation

Kinetic equation

Which technique is used ot determine the absorption of radiations.

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Spectrometry

dilatometer method

Refractometric method

Optical rotation method

With increase in 10°C temperature, the rate of reaction double. This increase in rate of reaction is due to

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Decrease in activation energy of reaction

Decrease in the number of collisions between reactant molecules

Increases in activation energy of reactants

Increase in number of effect collisions

If reactants have very low activation energy it means that reaction is.

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Slow

Fast

Endothermic

Exothermic

The mathematical relation between the rate of reaction and the concentrations of the reactants is known as the

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Rate equation

Rate law

Arrhenius equation

Both a and b

In zero order reaction, the rate is independent of.

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Temperature of reaction

Concentration of reactants

concentration of products

None of these

The unit of the rate constant is same as that of the rate of reaction in

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First order reaction

Second order reaction

Zero order reaction

Third order reaction

Half -Life period of a first order reacting is independent of.

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Initial concentration of the compound

Conditions of temperature

Presence of catalyst

All the above

The substance which decrease the activity of a catalyst is called.

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Promoter

Activator

Inhibitor

Positive catalyst

A type of meals are usually used as catalyst.

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Coinage metal

Alkali metals

Transition metals

alkaline earth metals

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Chemistry Fsc Part 1 Chapter 11 Online Test MCQs With Answers

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