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1 1 t year chemitry n0te new CHAPTER 11 REACTION KINETICS MCQS Q.1 In zero order reaction, the rate i independent of (a) temperature of reaction (b) concentration of reactant (c) concentration of product Q.2 If the rate equation of a reaction 2A + B Product, Rate = k [A]2 [B] and A i preent in large exce then order of reaction i: (a) 1 (b) 2 (c) 3 (d) none of thee Q.3 The rate of reaction (a) increae a the reaction proceed (b) decreae a the reaction proceed (c) remain the ame a the reaction proceed (d) may decreae or increae a the reaction proceed Q.4 With increae of 10 oc temperature the rate of reaction double. Thi increae in the rate of reaction i due to (a) decreae in activation energy of reaction (b) decreae in the number of colliion b/w reactant molecule (c) increae in activation energy of reactant (d) increae in number of effective colliion Q.5 The unit of the rate contant i the ame a that of the rate of reaction in (a) firt order reaction (b) econd order reaction (c) zero order reaction (d) third order reaction 1
2 1 t year chemitry n0te new Q.6 The unit of reaction i (a) mole/dm3 (b) mole/pound (c) mole/dm3 ec (d) mole/cm3 Q.7 In the rate equation, when the conc. of reactant i unity then rate i equal to (a) pecific rate contant (b) average rate contant (c) intantaneou rate contant Q.8 The rate of reaction between two pecific time interval i called (a) intantaneou rate (b) average rate (c) pecific rate (d) ordinary rate Q.9 Intantaneou rate of a chemical reaction i (a) rate of reaction in the beginning (b) rate of reaction at the end (c) rate of reaction at a given intant (d) rate of reaction b/w two pecific time interval Q.10 At the beginning the decreae in the conc. of reactant i (a) low (b) moderate (c) rapid Q.11 The um of exponent of the conc. term in the rate equation i called (a) rate of reaction (b) order of reaction (c) pecific rate contant (d) average rate Q.12 The average rate and intantaneou rate of a reaction are equal (a) at the tart (b) at the end (c) in the middle (d) when two rate have time interval equal to zero Q.13 The equation 2N2O5 2N2 ha order (a) firt order (b) econd order (c) negative order (d) fractional order Q.14 The hydrolyi of tertiary butyl ha order (a) firt order (b) peudo firt order (c) fractional order (d) zero order 2
3 1 t year chemitry n0te new Q.15 Photochemical reaction uually have order (a) one (b) zero (c) two (d) three Q.16 The experimental relationhip between a reaction rate and the concentration of reactant i called (a) order of reaction (b) pecific rate (c) law of ma action (d) rate law Q.17 When the rate of reaction i entirely independent of the conc. of reactant molecule then order of reaction i (a) zero (b) firt (c) econd (d) third Q.18 Half life of U i (a) 7.1 x 108 year (b) 6.1 x 108 year (c) 8.1 x 107 year (d) 7.1 x 1010 year Q.19 Half life period for decompoition of N2O5 at 45 oc i (a) 24 minute (b) 34 minute (c) 44 minute (d) 54 minute Q.20 The decompoition of ozone ha order (a) firt (b) negative (c) econd (d) peudo firt order Q.21 The equation CHCl3 + Cl2 CCl4 + HCl ha order (a) firt (b) negative (c) fractional (d) econd Q.22 When a reaction occur in many tep then the lowet tep i the (a) main tep (b) enthalpy determining tep (c) mechanim determining tep (d) rate determining tep Q.23 Spectrometry applied for rate determination when (a) reactant or product aborb U.V., I.R. light (b) reaction involve ion (c) reaction involve change in volume 3
4 1 t year chemitry n0te new Q.24 Electrical conductivity method i applied for rate determination when (a) reactant and product involve aborption of U.V. or I.R. radiation (b) reaction involving ion (c) reaction which involve change in refractive indice (d) reaction which involve mall volume change Q.25 Dilatometric method i ued for rate determination when (a) reaction involving ion (b) reaction involving change of optical activity (c) reaction involving mall volume change Q.26 Refractrometric method i ued when (a) reaction involving aborption of I.R. or U.V. (b) reaction involving change of refractive index (c) reaction involving ion (d) change of optical activity 4
5 1 t year chemitry n0te new Q.27 Optical rotation method i ued when (a) reaction involve ion (b) change of refractive indice (c) reaction involving change of optical activity Q.28 The ubtance which retard the rate of chemical reaction (a) catalyt (b) inhibitor (c) auto catalyt (d) enzyme Q.29 The enzyme ued in the hydrolyi of urea i (a) ureae (b) amylae (c) oxidae (d) reductae Q.30 In the hydrolyi of CH3COO2H5 the acid produce act a (a) inhibitor (b) catalyt (c) auto catalyt 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 factor which affect rate of reaction (a) nature of reactant (b) urface area (c) light (d) all of above Q.33 When temp of reacting gae i raied to 10 K, the reaction rate become (a) remain ame (b) double (c) triple (d) increae four time Q.34 Arrheniu equation decribe the effect of (a) temp on rate of reaction (b) volume on rate of reaction (c) preure on rate of reaction (d) all the above Q.35 A ubtance which alter the rate of reaction (a) inhibitor (b) catalyt (c) promoter (d) auto catalyt Q.36 Homogeneou catalyi when 5
6 1 t year chemitry n0te new (a) reactant and catalyt have ame phae (b) product and catalyt have ame phae (c) reactant and product have ame phae Q.37 The heterogenou catalyi (a) reactant and product have different phae (b) reactant and catalyt have different phae (c) product and catalyt have different phae (d) all the above Q.38 Tetra ethyl lead when added to petrol, act a (a) negative catalyt (b) auto catalyt (c) promoter (d) catalyt Q.39 Concentrated ugar olution undergoe hydrolyi by an enzyme (a) invertae (b) ureae (c) zymae (d) glucae Q.40 Glucoe i converted into ethanol by an enzyme (a) ureae (b) invertae (c) zymae (d) glucoe ANSWERS Quetion Anwer b a b d c Quetion Anwer c a b c c Quetion
7 1 t year chemitry n0te new Anwer b d a b b Quetion Anwer d a a a b Quetion Anwer c d a b c Quetion Anwer b c b a c Quetion Anwer d d b a b Quetion Anwer a b a a c 7
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