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AIEEE Minor Test #1

1.For a given equilibrium reaction,an increase in temperature will :

 

1) increase the rate of exothermic direction more than the endothermic direction

 

(2) increase the rate of endothermic direction more than the endothermic direction

 

(3) increase both rate equally

 

(4) decrease both rate equally




2.The dissociation constants of two weak acids are K1and K2.The relative strength of two acid is given by :1. K1/K22.

3.  (K1/K2)1/24. (K1/K2)3/23.Give pKw(H2O)=13.54 at40oC.Predict the nature of solution having pH=7 at 40oC :

(1) acidic

 

(2) alkaline

 

(3) neutral

 

(4) cannot be predicte

 

4.Consider the reaction CaCO3 (s) CaO (s) + CO (g) in a closed container at equilibrium.What would be the effect of addition of CaCO3 on the equilibrium concentration of CO2 :
1. Increases
2. Decreases
3. Data insuffcient
4. Remains unaffected



5.For the expression,rate = K (a)2 when the concentration of reactants is doubled the rate of reaction would undergo :
1. An eight fold increase
2. Six fold increase
3. Two fold increase
4. Four fold increase

 

6.The pH of 0.1M NH4OH (Kb= 1.8 x 10-5M) at 25oC is :

1. 2.87

2. 1.8

3. 11.13

4. 12.2

7.If initial concentration is reduced to 1/4th

in a zero order reaction,the time taken for half the reaction to complete :

 

1. remains same

2. becomes 4 times
3. becomes one fourth

4. doubles



8.There is a formation of precipitate almost instantly when alcoholic AgNO3

reacts with :

 


1. I,II and III
2. I and II
3. II and III
4. I and III

 

9.Acidic nature of CH3 OH (I),CH3

SH (II) and CH3NH2

(III) is in order :

 

1. III < II < I

 

2. III < I < II

 

3. I < II < III

 

4. II < I < III



10.Basic nature order of,H2O,is in order :

 

1. H3O+< H2O <2. H2O << H3O+3.< H2O < H3O+4.= H3O+= H2O




11.Most stable carbocation :

 

1.

 

2.

 

3.

 

4.

 



12.Arrange in increasing pkb

values are :

 

1.

2.

3.

4.  None of these




13.The degree of hydrolysis of 0.01M KCN when Kaof HCN = 6.2 x 10-10is :

1. 5%

 

2. 4%

 

3. 20%

 

4. None


14.Eight moles of a gas AB3

are introduced into a previously evacuated 1 dm3

container in which it dissociated as 2AB3(g)A2(g) +3B2

(g).At equilibrium 2 mol. of A2

(g) is present then Keis :

 

1. 72 mol2I-2

2. 36 mol2I-2

3. 3 mol2I-2

4. 27 mol2I-2

 


15.pOH of H2O is 7.0 at 298 K.If water is heated at 350 K,which of the following should be true:
(1) pOH will decrease
(2) pOH will increase
(3) pOH will remain 7.0
(4)Concentration of H+ ions will increase but that of OH- will decrease




16.M2SO4 (M+ is a monovalent metal ion) has a Ksp of 3.2 x 10-5 at 298 K.The maximum concentration of SO4-2 ion that could be attained in a saturated solution of this solid at 298 K is :
1. 3 x 10-3 M
2. 7 x 10-2 M
3. 2.89 x 10-4 M
4. 2 x 10-2 M

 

17.A reaction is found to be second order w.r.t. one of the reactants & has rate constant of 0.5 mol-1dm3min-1.If initial concentration is 0.2 mol dm

-3then t1/2of reaction is :1.  5 min2. 10 min3. 15 min4. 20 min

18.The solubility product of AgCl is 4 x 10-10at 298 K.The solubility of AgCl in 0.04M CaCl2will be :

1. 2 x 10-5M
2. 5 x 10-9M

3. 10-4M

4. 2.2 x 10-4M



19.Taking Ba(OH)2to be completely ionised.The pH of its 0.001 M solution is :

 

1. 11.3

2. 2.7

3. 11

4. 3



20.Which of the following will give highest enol content?

 

1.

 

2.

 

3.

 

4.

 

21.Which of the following is least stable?

 

1.

 

2.

 

3.

 

4.

 


 

22.The major product (P) of the reaction


will be :

 

1.

 

2.

 

3.

 

4. None



23.

,both A and B gives positive Tollen's test,then,A and B will be respectively.

 

1. HCHO,HCOOH

 

2. HCOOH,HCHO

 

3. HCOOH,HCOOH

 

4. HCHO,HCHO


24.(X). (X) and (Y) are :

1. isomers

 

2. identical

 

3. either (A) or (B)

 

4. neither (A) or (B)

 

 

25.When CO

2

dissolves in water,the dollowing equilibrium is established

 

CO2+ 2H2OH3O++ HCO3-; for which the equilibrium constant is 3.8 x 10-6

and pH = 6.0.What would be the ratio of concentration of bicarboate ion to carbon dioxide :

 

1. 3.8 x 10-12M

 

2. 3.8

 

3. 6

 

4.  13.4


26.Which of the following expression is not true :


(1) For a natural solution



(2)For an acidic solution



(3)For an alkaline solution



(4)For a neutral solution

at all temperatures




27.The rate constant for the reaction,2N2O5 4NO2+ O2, is 3.0 x 10-5sec.If the rate of reaction is 2.40 x 10-5mol I-1sec-1,then the concentration of N

2O5( in mol lit-1) is :

1. 1.4

2. 1.2

3. 0.04

4. 0.8

28.Ifis the fraction of HI dissociated at equilibrium in the reaction, 2HI H2+ I2, starting with 2 mol of HI, the total number of moles of the reactants and products at equilibrium is :

 

1. 1

 

2. 1+

 

3. 2

 

4. 2+2



29.In the two gaseous equilibria (i) and (ii) at a certain temperature

 

(i) SO2(g)1/2 O2(g)SO3(g)........K1

 

(ii)2SO3(g)2SO2+ O2(g)........K2If K1is 4 x 10-3then K2 will be :

 

1. 8 x 10-3

2. 16 x 10-6

3. 6.25 x 104

4. 6.25 x 108



30.Initially,0.8 mole of PCl5and 0.2 mole of PCl3are mixed in one litre vessel.At equilibrium,0.4 mole of PCl3is present.The value of Kefor the reaction PCl

5(g) PCl3(g) + Cl2(g) would be :

1. 0.13 mol I-1

2. 0.05 I-1

3. 0.013 mol I-1

4. 0.66 I-1





31.The end product of the reaction is :

 

1.

 

2.

 

3.

 

4. None




32. Which of the following is not aromatic?

 

1.

 

2.

 

3.

 

4.

 

33.Which of the following will undergo fastestdehydrobromination?

 

1.

 

2.

 

3.

 

4.

 

34.Which of the following is the most basic?

 

1.

 

2.

 

3.

 

4.

 


35.Which of the following carbon will give fastest deprotonation?


1. 4

 

2. 5

 

3. 2

 

4. 3




 

36.Which of the following is the correct statement?

(1) C6H6 and C6D6 has equal reactivity towards iodination

(2) C6H6 and C6D6 has equal reactivity towards sulphonation

(3) C6D6 is less reactive than C6H6 towards sulphonation

(4) C6H6 is more reactive than C6D6 towards nitration






37.Find out the end product of the reaction.

 

1.

 

2.

 

3.

 


4.

 


38.Which of the following is the product (P) in the sequence of the reaction?

 

 

1.

 

2.

 

3.

 

4.

 


39.Which of the following compounds have a dipole moment?

 

1.

 

2.

 

3.

 

4. None of these



40. If the carbocation

rearranges to gain stability,it will rearrange to :

 

1.

 

2.

 

3.

 

4.

 

 
  Electricity and Effect of Current      Chemical Kinetics      Centre of Mass      Chemical Equilibrium      AIEEE 2009 Solutions and Analysis      Chemical Bonding      Quadratic Equations      Progression And Series      dasda      Chemical Bonding      General Principles of Extraction of Metals      Ether and epoxides      Atomic Structure      Parabola      IIT-JEE Chemistry by M.K.Tiwri      Properties of Matter      Material Wave and Sound      Heat & Thermodynamics      Aldehydes and ketones      Disha - Path to Success Series     
 



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