Chemistry FSC part 1
Q.1 In zero order reaction, the rate is independent of 
(b) decrease
in the number of collisions b/w reactants molecules
Chapter REACTION KINETICS
Q.1 In zero order reaction, the rate is independent of
(a) temperature
of reaction
(b) concentration
of reactants
(c) concentration
of products
(d) none
of above
Q.2 If the
rate equation of a reaction 2A + B Product, Rate =
k [A]2 [B] and A is present in large excess then order of reaction is:
(a) 1 (b) 2
(c) 3 (d) none of these
Q.3 The rate of reaction
(a) increases
as the reaction proceeds
(b) decreases
as the reaction proceeds
(c) remains
the same as the reaction proceeds
(d) may
decrease or increase as the reaction proceeds
Q.4 With increases of 10 oC
temperature the rate of reaction doubles. This increase in the rate of reaction
is due to
(a) decrease
in activation energy of reaction
(b) decrease
in the number of collisions b/w reactants molecules
(c) increase
in activation energy of reactants
(d) increase
in number of effective collisions
Q.5 The unit of the rate constant is the same as that of the
rate of reaction in
(a) first
order reaction (b) second order reaction
(c) zero order reaction (d) third order reaction
Q.6 The unit of reaction is
(a) mole/dm3 (b) mole/pound
(c) mole/dm3 sec (d) mole/cm3
Q.7 In the rate equation, when the conc. of reactants is
unity then rate is equal to
(a) specific rate constant (b) average rate constant
(c) instantaneous
rate constant
(d) none
of above
Q.8 The rate of reaction between two specific time intervals
is called
(a) instantaneous rate (b) average rate
(c) specific rate (d) ordinary rate
Q.9 Instantaneous rate of a chemical reaction is
(a) rate
of reaction in the beginning
(b) rate
of reaction at the end
(c) rate
of reaction at a given instant
(d) rate
of reaction b/w two specific time intervals
Q.10 At the beginning the decrease in the conc. of reactants
is
(a) slow (b) moderate
(c) rapid (d) none of above
Q.11 The sum of exponents of the conc. terms in the rate
equation is called
(a) rate of reaction (b) order of reaction
(c) specific rate constant (d) average rate
Q.12 The average rate and instantaneous rate of a reaction
are equal
(a) at the start (b) at the end
(c) in
the middle
(d) when
two rate have time interval equal to zero
Q.13 The equation 2N2O5 2N2 has order
(a) first order (b) second order
(c) negative order (d) fractional order
Q.14 The hydrolysis of tertiary butyl has order
(a) first order (b) pseudo first order
(c) fractional order (d) zero order
Q.15 Photochemical reactions usually have order
(a) one (b) zero
(c) two (d) three
Q.16 The experimental relationship
between a reaction rate and the concentration of reactants is called
(a) order of reaction (b) specific rate
(c) law of mass action (d) rate law
Q.17 When the rate of reaction is
entirely independent of the conc. of reactants molecule then order of reaction
is (a) zero (b) first
(c) second (d) third
Q.18 Half life of U is
(a) 7.1 x 108 years (b) 6.1 x 108 years
(c) 8.1 x 107 years (d) 7.1 x 1010 years
Q.19 Half life period for decomposition of N2O5 at 45 oC is
(a) 24 minutes (b) 34 minutes
(c) 44 minutes (d) 54 minutes
Q.20 The
decomposition of ozone has order
(a) first (b) negative
(c) second (d) pseudo first order
Q.21 The equation CHCl3 + Cl2 CCl4 + HCl has
order
(a) first (b) negative
(c) fractional (d) second
Q.22 When a reaction occurs in many steps then the slowest
step is the
(a) main
step
(b) enthalpy
determining step
(c) mechanism
determining step
(d) rate
determining step
Q.23 Spectrometry applied for rate determination when
(a) reactants
or product absorb U.V., I.R. light
(b) reaction
involve ion
(c) reaction
involve change in volume
(d) none
of above
Q.24 Electrical conductivity method is applied for rate
determination when
(a) reactants
and products involve absorption of U.V. or I.R. radiation
(b) reaction
involving ions
(c) reaction
which involve change in refractive indices
(d) reactions
which involve small volume change
Q.25 Dilatometric method is used for rate determination when
(a) reactions
involving ions
(b) reactions
involving change of optical activity
(c) reaction
involving small volume change
(d) none
of above
Q.26 Refractrometric method is used when
(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
Q.27 Optical rotation method is used when
(a) reaction
involve ions
(b) change
of refractive indices
(c) reactions
involving change of optical activity
(d) none
of above
Q.28 The substance which retard the rate of chemical
reaction
(a) catalyst (b) inhibitor
(c) auto catalyst (d) enzyme
Q.29 The enzyme used in the hydrolysis of urea is
(a) urease (b) amylase
(c) oxidase (d) reductase
Q.30 In the hydrolysis of CH3COO2H5 the acid produce act as
(a) inhibitor (b) catalyst
(c) auto catalyst (d) none of above
Q.31 The order of reaction can be determined by
(a) graphical method (b) method of hit and trial
(c) differential method (d) all of above
Q.32 The factors which affect rate of reaction
(a) nature of reactants (b) surface area
(c) light
(d) all of above
Q.33 When temp of reacting gases is raised to 10 K, the
reaction rate becomes
(a) remain same (b) double
(c) triple (d) increase four times
Q.34 Arrhenius equation describe the effect of
(a) temp
on rate of reaction
(b) volume
on rate of reaction
(c) pressure
on rate of reaction
(d) all
the above
Q.35 A substance which alters the rate of reaction
(a) inhibitor (b) catalyst
(c) promoter (d) auto catalyst
Q.36 Homogeneous catalysis when
(a) reactants
and catalyst have same phase
(b) products
and catalyst have same phase
(c) reactant
and products have same phase
(d) none
of above
Q.37 The heterogenous catalysis
(a) reactants
and products have different phases
(b) reactants
and catalyst have different phases
(c) products
and catalyst have different phases
(d) all
the above
Q.38 Tetra ethyl lead when added to petrol, acts as
(a) negative catalyst (b) auto catalyst
(c) promoter (d) catalyst
Q.39
Concentrated sugar solution undergoes hydrolysis by an enzyme
(a) invertase (b) urease
(c) zymase (d) glucase
Q.40 Glucose is converted into ethanol by an enzyme
(a) urease (b) invertase
(c) zymase
(d) glucose
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