chase the dream not the competition

Over 1000+ articles, updated everyday...for Free SMS Alerts click here , Engineering Q&A forum here

Invite Friends
Search:     Advanced Search
Browse by category:
 

VITEEE 2009 Sample Question Papers - Chemistry

Vist the new KnowledgeBin forum to ask all your questions!

KnowledgBin.org SMS Registration

Click Here to Register Online

Creative Commons License
KnowledgeBin.org is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 2.5 India License.

VITEEE 2009 Sample Question Papers - Chemistry -  PART – 2 [CHEMISTRY]

41.  The oxidation number of oxygen ¾

 

        Ans:   KO 3: + 1 + 3x = 0,              x =

                   Na 2O2: + 2 + 2x = 0,          x = - 1

                   Choice (D)

 

42.  Reaction of I Cl3 and PhMgBr ¾

 

        Ans:   Triphenyl phosphene

                   3C 6H5MgBr + PCl3 ® (C6H5)3P + 3MgClBr

                   Choice (C)

 

43.  ……. not a characteristic of transition elements?

 

        Ans:   Choice (D)

 

44.  Cl - P - Cl bond ¾

 

        Ans:   Arial bonds are 90° and Equatorial bonds are 120°.

                   Choice (A)

 

45.  --- magnetic moment ¾

        Ans:   No unpaired electron.

                   Choice (A)

 

46.  The number of Formula units of calcium fluoride CaF2 ¾

 

        Ans:   Number of moles =

                   Number of formula units =  ´ 6.023

                                                                                  ´ 1023

                                                                = 1.129 ´ 1024

                   Choice (A)

 

47.  The IUPAC name of the given ¾

 

        Ans:   Choice (C)

 

48.  When SCN? is added to an aqueous ¾

 

        Ans:   Fe 3+ + SCN? + H2O ® [Fe(H2O)5SCN]2+

                   Choice(B)

 

 

49.  Hair dyes contain

 

        Ans:   Choice (C)

 

50.  Schottky defects occurs ¾

 

        Ans:   Schottky defect occurs when the ions have almost the same size

                   Choice (B)

 

51.  The number of unpaired electron ¾

 

        Ans:   [Co(NH 3)6]3+ - Inner orbital complex

                                          - No unpaired electron

                   [CoF 6]3?         - Outer orbital complex

                                          - 4 unpaired electrons

                   Choice (D)

 

52.  The standard free energy change of a reaction ¾

 

        Ans:   - D G° = 2.303 RT log Kp

                    log Kp

                   0.02016 ´ 103 = log Kp

                                             = log K p = 20.16

                   Choice (A)

 

53.  If an endothermic reaction occurs spontaneously at ¾

 

        Ans:   For an endothermic reaction D H is positive, the reaction occurs spontaneously when D S > 0

                   Choice (C)

 

54.  If a plot of log10 C versus t fives a straight line ¾

 

        Ans:   t =

                   t ´  = logC0 - logC

                   logC = logC0 - t ´

                   logC is t in a stline with slope

                   Choice (B)

 

55.  A spontaneous process is one in which ¾

 

        Ans:   For a spontaneous process D G is negative.

                   Choice (B)

 

 

56.  The half life period of a first order reaction ¾

 

        Ans:   t ½ = 100 sec.

                   For a first order reaction t ½ =

                   K =  =  = 6.93 ´ 10?3 sec?1

                   Choice (B)

 

57.  The molar conductivities of KCl, NaCl and KNO3 are ¾

 

        Ans:   =

                   = 128 + 111 - 152 = 87 S cm2 mol?1

                   Choice (B)

 

58.  The electrochemical cell stops working ¾

 

        Ans:   When both the electrode potentials become equal cell reactions stops.

                   Choice (B)

 

59.  The amount of electricity required to produce ¾

 

        Ans:   1 mole of copper is 2 equivalents

                   Current required = 2 Faraday

                   Choice (C)

 

60.  Dipping iron article into a strongly alkaline ¾

 

        Ans:   Choice (C)

 

61.  Hydroboration oxidation of 4-methyl-octene ¾

 

        Ans:   Hydroboration – oxidation of alkenes give alcohols containing the same number of carbon atoms. Net reaction involves addition of H2O against Markownikoff’s rule.

                   Choice (A)

 

62.  When ethyl alcohol is heated

 

        Ans:   Ethanol undergoes dehydration when heated with conc.H2SO4 to form ethylene.

                   Choice (D)

 

63.  Anisole is the product obtained from ¾

 

        Ans:   Anisole is phenyl methyl ether.

                   Choice (B)

 

 

 

64.  Ethylene glycol gives oxalic acid ¾

 

        Ans:   Choice (C)

 

65.  Diamond is hard ¾

 

        Ans:   Choice (A)

 

66.  A Wittig reaction with an aldehyde ¾

 

        Ans:   Carbonyl compounds react with phosphorous yields to form alkenes. This is known as Witting reaction.

                   Choice (C)

 

67.  Cannizzaro reaction is ¾

 

        Ans:   HCHO does not contain a -hydrogen atom. So it undergoes Cannizzaro reaction.

                   Choice (A)

 

68.  ¾

 

        Ans:   C 6H6 + CO  C6H5 - CHO

        This is known as Gattermann-Koch aldehyde synthesis.

                   Choice (C)

 

69.  Maleic acid and Fumaric acids ¾

 

        Ans:   Maleic acid is the cis-isomer and fumaric acid is the trans-isomer.

                   Choice (B)

 

70.  The gas evolved on heating ¾

 

        Ans:   HCOONa + NaOH

                                                        H 2 + Na2CO3.

                   Choice (C)

 

 

 

 


71.  CH 3CH3 + HNO3 ¾

 

        Ans:   Choice (B)

 

72.  When acetamide is hydrolysed by ¾

 

        Ans:   Choice (A)

 

73.  Which will not go for diazotization?

 

        Ans:   Choice (B)

 

74.  Secondary nitroalkanes can be ¾

 

        Ans:  

                   Choice(A)

 

75.  ………. Stephen reduction to ¾

 

        Ans:   Alkyl cyanides on reduction with SnCl2 and HCl will give aldehyde.

                   Choice (A)

 

76.  The continuous phase contains ¾

 

        Ans:   Choice (C)

 

77.  The number of hydrogen atoms present in ¾

 

        Ans:   = 9.91 ´ 1023

                   Choice (B)

 

78.  Milk changes after digestion ¾

 

        Ans:   Choice (C)

 

79.  ……… essential amino acids?

 

        Ans:   Choice (B)

 

80.  ….. is a Ketohexose?

 

        Ans:   Choice (C)

VITEEE 2009 Sample Question Papers - Physics
PART – 1 [PHYSICS]   1.     In nature, the electric charge of any system is always–

VITEEE 2009 Sample Question Papers - Chemistry
41.  The oxidation number of oxygen ¾         

VITEEE 2009 Sample Question Papers - Mathematics
VITEEE 2009 Sample Question Papers - Chemistry -  PART – 3 [MATHEMATICS] 81.  The system of equations -

VITEEE Information
VIT consists of four parts:

VITEEE Past Trends, Cut-offs & Marks Distribution
This is an  objective type test and consists of  four parts- Part I -Physics - 40 marks Part II - Chemistry - 40 marks Part III - Mathematics –40 marks Part IV...

Detailed Information - Vellore Institute Of Technology (VIT) This article is for all those people who have agood rank in aieee and also a good stream in vit. After seeing a no of aspirants in this forum looking for advice i try to spread a

source:-http://www.time4education.com

SMS Alerts

SocialTwist Tell-a-Friend

Admission Updates

KnowledgeBin Forum Invite Friends

KnowledgeBin Forum Discuss In Forum

Views: 3462
Votes: 6

Others In This Category
document BITSAT Sample Questions 2009
document DCE (Delhi College of Engineering) Entrance Examination Sample Paper - Physics
document DCE (Delhi College of Engineering) Entrance Examination Sample Paper - Chemistry
document DCE (Delhi College of Engineering) Entrance Examination Sample Paper - Maths
document EAMCET Question Paper (Physics)
document The Karnataka Common Entrance Test (KCET) Information and Previous Year Questions - 2004 to 2008
document VITEEE 2009 Sample Question Papers - Physics
document VITEEE 2009 Sample Question Papers - Mathematics
About Us | Contact Us | Feedback | Copyright © 2008 KnowledgeBin.org™ All rights reserved



RSS