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Topic: - CHEM MSC S2
- The oxo-acid of phosphorus having P-atoms in +4, +3, and + 4 oxidation states respectively, is [Question ID = 9737]
- H5P3O10 [Option ID = 38942]
- H5P3O7 [Option ID = 38944]
- H5P3O8 [Option ID = 38946]
- H5P3O9 [Option ID = 38948]
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Correct Answer :-
• H5P3O8 [Option ID = 38946]
- According to Wade's theory the anion [B12H12]2- adopts [Question ID = 9740]
- closo-structure [Option ID = 38951]
- arachno-structure [Option ID = 38953]
- hypo- structure [Option ID = 38955]
- nido- structure [Option ID = 38957]
Correct Answer :-
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• closo-structure [Option ID = 38951]
- Which one of the following species has the magnetic moment value of 3.87 BM? [Question ID = 9741]
- Fe3+ [Option ID = 38958]
- Cr2+ [Option ID = 38960]
- Co2+ [Option ID = 38962]
- Au³+ [Option ID = 38964]
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Correct Answer :-
• Co2+ [Option ID = 38962]
- Which of the following complexes does not show optical activity? [Question ID = 9743]
- [Co(EDTA)] [Option ID = 38966]
- [Pt(bn)2]2+ [Option ID = 38968]
- [Pt(pn)2]2+ [Option ID = 38970]
- [Pt(en)2]2+ [Option ID = 38972]
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Correct Answer :-
• [Pt(en)2]2+ [Option ID = 38972]
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- The expected H-H-H bond angle in [H3]+ [Question ID = 9745]
- 180° [Option ID = 38974]
- 120° [Option ID = 38976]
- 60° [Option ID = 38978]
- 90° [Option ID = 38980]
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Correct Answer :-
• 60° [Option ID = 38978]
- The metallic radii are abnormally high for which of the following pairs? [Question ID = 9747]
- Eu, Yb [Option ID = 38982]
- Sm, Tm [Option ID = 38984]
- Gd, Lu [Option ID = 38986]
- Nd, Ho [Option ID = 38988]
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Correct Answer :-
• Eu, Yb [Option ID = 38982]
- The least basic among the following is [Question ID = 9750]
- Al(OH)3 [Option ID = 38991]
- La(OH)3 [Option ID = 38993]
- Ce(OH)3 [Option ID = 38995]
- Lu(OH)3 [Option ID = 38997]
- According to VSEPR theory, the molecule is [Question ID = 9751]
- SO42- [Option ID = 38998]
- SF4 [Option ID = 39000]
- S2Cl2 [Option ID = 39003]
- SO2Cl2 [Option ID = 39005]
Correct Answer :-
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• SO42- [Option ID = 38998]
- According to MO theory, for the diatomic species, C2 [Question ID = 9754]
- Bond order is zero and it is diamagnetic [Option ID = 39007]
- Bond order is two and it is paramagnetic [Option ID = 39009]
- Bond order is two and it is diamagnetic [Option ID = 39011]
- Bond order is zero and it is paramagnetic [Option ID = 39013]
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Correct Answer :-
• Bond order is two and it is diamagnetic [Option ID = 39011]
- The number of microstates present in 3F term is [Question ID = 9755]
- 3 [Option ID = 39014]
- 21 [Option ID = 39016]
- 9 [Option ID = 39018]
- 28 [Option ID = 39020]
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Correct Answer :-
• 21 [Option ID = 39016]
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- Consider the following statements:
According the Werner's theory
A. Ligands are connected to the metal ions by covalent bonds
B. Secondary valence is have directional properties
C. Secondary valences are non-ionisable of these statements
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Choose the correct answer from the options given below:
[Question ID = 9757]- A, B and C only [Option ID = 39022]
- B and C only [Option ID = 39024]
- A and C only [Option ID = 39026]
- A and B only [Option ID = 39028]
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Correct Answer :-
• B and C only [Option ID = 39024]
- Among the following, the correct order of acidity is? [Question ID = 9760]
- HCIO < HCIO2 < HCIO3 < HCLO4 [Option ID = 39031]
- HCIO4 < HCIO3 < HCIO2 < HCIO [Option ID = 39033]
- HCIO < HCIO4 < HCIO3 < HCIO2 [Option ID = 39035]
- HCIO2 < HCIO2 < HCIO < HCLO4 [Option ID = 39036]
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Correct Answer :-
• HCIO < HCIO2 < HCIO3 < HCIO4
- Which of the following nonaqueous solvents has the longest liquid range? [Question ID = 9761]
- H2SO4 [Option ID = 39038]
- N2O4 [Option ID = 39040]
- NH3 [Option ID = 39042]
- HCl [Option ID = 39044]
Correct Answer :-
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• H2SO4 [Option ID = 39038]
- The following compounds are Pd (C6H5)2(SCN)2] and [Pd (C6H5)2(NCS)2] [Question ID = 9764]
- Linkage isomers [Option ID = 39046]
- Co-ordination isomers [Option ID = 39047]
- Ionization isomers [Option ID = 39049]
- Geometrical isomers [Option ID = 39051]
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Correct Answer :-
• Linkage isomers [Option ID = 39046]
- Which of the following elements found in native state [Question ID = 9765]
- Al [Option ID = 39054]
- Au [Option ID = 39055]
- Cu [Option ID = 39056]
- Na [Option ID = 39058]
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Correct Answer :-
• Au [Option ID = 39055]
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- Element with outer electronic configuration ns2 np6 are [Question ID = 9768]
- Alkaline earth metals [Option ID = 39063]
- Transition elements [Option ID = 39065]
- Chalcogens [Option ID = 39067]
- Noble gases [Option ID = 39069]
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Correct Answer :-
• Noble gases [Option ID = 39069]
- Which one of the following elements is least likely to participate in a hydrogen bond? [Question ID = 9769]
- O [Option ID = 39070]
- S [Option ID = 39073]
- F [Option ID = 39075]
- N [Option ID = 39077]
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Correct Answer :-
• S [Option ID = 39073]
- Which one of the following terms describes a positive and negative charge, which are separated in space within a molecule? [Question ID = 9771]
- Salt bridge [Option ID = 39078]
- Polar bond [Option ID = 39080]
- Dipole [Option ID = 39082]
- Van der Waals interaction [Option ID = 39084]
Correct Answer :-
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• Dipole [Option ID = 39082]
- Choose the correct lattice energy order [Question ID = 9773]
- LiH < NaH < KH [Option ID = 39086]
- MgH2 > CaH2 < SrH2 [Option ID = 39088]
- MgH2 > CaH2 > SrH2 [Option ID = 39090]
- LiH< NaH > KH
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- XeF2 is isostructural with [Question ID = 9775]
- ICl2 [Option ID = 39094]
- SbCl3 [Option ID = 39096]
- BaCl2 [Option ID = 39099]
- TeF2 [Option ID = 39101]
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Correct Answer :-
• ICl2 [Option ID = 39094]
- The pair of species that has the same bond order in the following is [Question ID = 9778]
- O2, B2 [Option ID = 39103]
- CO, NO+ [Option ID = 39105]
- O2, N2 [Option ID = 39107]
- NO, CN [Option ID = 39109]
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Correct Answer :-
• CO, NO+ [Option ID = 39105]
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- Total orbital angular momentum of np' electronic system is (a.u.) [Question ID = 9779]
- 0 [Option ID = 39110]
- 1 [Option ID = 39112]
- 2 [Option ID = 39113]
- 1/2 [Option ID = 39115]
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Correct Answer :-
• 1 [Option ID = 39112]
- The process of heating the concentrated ore in a limited supply of air or in the absence of air is known as [Question ID = 9782]
- Roasting [Option ID = 39119]
- Leaching [Option ID = 39120]
- Calcination [Option ID = 39122]
- Cupellation [Option ID = 39124]
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Correct Answer :-
• Calcination [Option ID = 39122]
- Bond order of He molecule is [Question ID = 9783]
- 2 [Option ID = 39126]
- 1/2 [Option ID = 39128]
- 1 [Option ID = 39130]
- 0 [Option ID = 39132]
Correct Answer :-
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• 0 [Option ID = 39132]
- Which of the following structures represents the conjugate acid of HΡΟ42- [Question ID = 9786]
- H2PO4 [Option ID = 39135]
- H3PO4 [Option ID = 39137]
- H4PO4+ [Option ID = 39139]
- PO43 [Option ID = 39141]
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Correct Answer :-
• H2PO4 [Option ID = 39135]
- (NH4)2Cr2O7 On heating gives a gas which is also given by [Question ID = 9787]
- heating NH4NO2 [Option ID = 39142]
- heating NII4NO3 [Option ID 39144]
- Mg3N2 + H2O [Option ID = 39146]
- Na (comp.) + H2O2 [Option ID = 39148]
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- All metals form oxides of the type MO except [Question ID = 9790]
- Copper [Option ID = 39151]
- Barium [Option ID = 39153]
- Silver [Option ID = 39155]
- Lead [Option ID = 39157]
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Correct Answer :-
• Silver [Option ID = 39155]
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- Which of the following represents the order of the extent of intensity of scattering of X-rays from the ions Na+, Li+, Cl-, Br: [Question ID = 9791]
- Li+ < Na+ < Cl- < Br- [Option ID = 39158]
- Br < Cl- < Na+ < Li+ [Option ID = 39160]
- Na+ < Li+ < Br < Cl- [Option ID = 39162]
- Li+ < Cl < Na+ < Br [Option ID = 39164]
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Correct Answer :-
• Li+ < Na+ < Cl < Br [Option ID = 39158]
- Which ordering correctly shows the variation in rates of water exchange in high-spin aqua complexes [M(OH2)6]n+? [Question ID = 9794]
- Cr3+ > Fe3+ [Option ID = 39167]
- Cr2+ > Cr3+ [Option ID = 39169]
- Co2+ > Cr2+ [Option ID = 39171]
- V2+ > Co2+ [Option ID = 39172]
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Correct Answer :-
• Cr2+ > Cr3+ [Option ID = 39169]
- Which ordering correctly describes the tendency of a ligand to direct ligand substitution in a square planar complex to a position opposite to itself? [Question ID = 9795]
- [CN] > Br > NH3 > [NO2] [Option ID = 39174]
- [CN] > [NO2] > Br¯ > NH3 [Option ID = 39176]
- Br > [CN] > NH3 > [NO2] [Option ID = 39178]
- [NO2] > [CN] > NH3 > Br [Option ID = 39180]
Correct Answer :-
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• [CN] > [NO2] > Br¯ > NH3 [Option ID = 39176]
- Identify the wrong statement in the following [Question ID = 9798]
- Atomic radius of the elements increases as one moves down the first group of the periodic table [Option ID = 39183]
- Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the periodic table [Option ID = 39185]
- Amongst isoelectronic species, smaller the positive charge on the cation, smaller is the ionic radius [Option ID = 39187]
- Amongst isoelectronic species, larger the negative charge on the anion, larger is the ionic radius [Option ID = 39189]
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- Rare gases are [Question ID = 9799]
- mono atomic [Option ID = 39190]
- di atomic [Option ID = 39191]
- tri atomic [Option ID = 39193]
- All of these [Option ID = 39196]
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Correct Answer :-
• mono atomic [Option ID = 39190]
- Who proposed first atomic theory? [Question ID = 9801]
- E. Rutherford [Option ID = 39198]
- De Broglie [Option ID = 39199]
- John Dalton [Option ID = 39200]
- D.I. Mendeleev [Option ID = 39201]
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Correct Answer
• John Dalton [Option ID = 39200]
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- Which one of the following is the softest? [Question ID = 9802]
- sodium [Option ID = 39202]
- iron [Option ID = 39203]
- aluminium [Option ID = 39204]
- lithium [Option ID = 39205]
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Correct Answer :-
• sodium [Option ID = 39202]
- In a mixture of the five proteins listed below, which should elute second in size-exclusion (gel-filtration) chromatography?
A. cytochrome c Mr = 13,000
B. immunoglobulin G Mr = 145,000
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C. ribonuclease A M₁ = 13,700
D. RNA polymerase Mr = 450,000
E. serum albumin Mr = 68,500
Choose the correct answer from the options given below:
[Question ID = 9803]- A and B only [Option ID = 39206]
- B only [Option ID = 39207]
- C and E only [Option ID = 39208]
- A and D only [Option ID = 39209]
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Correct Answer :-
• B only [Option ID = 39207]
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- What is X in the following conversion?
OH
H+
www.FirstRanker.com - [Question ID = 9804]
- [Option ID = 39210]
- [Option ID = 39211]
- [Option ID = 39212]
- 0 [Option ID = 39213]
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Correct Answer :-
• [Option ID = 39212]
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- The correct order of reactivity of p-halo nitrobenzene in the following reaction is
X
NO2 NaOMe
X= F, Cl, Br, I
MeO
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NO2
[Question ID = 9805]- p-chloronitrobenzene> p-iodonitrobenzene>p-fluoronitrobenzene>p-bromonitrobenzene [Option ID = 39214]
- p-fluoronitrobenzene > p-chloronitrobenzene > p-bromonitrobenzene > p-iodonitrobenzene [Option ID = 39215]
- p-iodonitrobenzene > p-bromonitrobenzene > p-chloronitrobenzene > p-fluoronitrobenzene [Option ID = 39216]
- p-bromonitrobenzene > p-fluoronitrobenzene > p-iodonitrobenzene > p-chloronitrobenzene [Option ID = 39217]
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Correct Answer :-
• p-fluoronitrobenzene > p-chloronitrobenzene > p-bromonitrobenzene > p-iodonitrobenzene [Option ID = 39215]
- What is the relationship between the two structures shown?
CI
Me
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Me
CI
[Question ID = 9806]- Constitutional isomer [Option ID = 39218]
- Stereoisomers [Option ID = 39219]
- Different drawing of the same conformation of the same compound [Option ID = 39220]
- Different conformation of the same compound [Option ID = 39221]
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Correct Answer :-
• Constitutional isomer [Option ID = 39218]
- The number of possible stereoisomer's obtained in the following reaction is
Me
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- O3, Zn
- excess PhMgBr
- H3O+
- [Question ID = 9804]
- 4 [Option ID = 39222]
- 6 [Option ID = 39223]
- 8 [Option ID = 39224]
- 10 [Option ID = 39225]
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Correct Answer :-
• 8 [Option ID = 39224]
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- Identify P for the below mentioned reaction
1. CH3l
N(C2H5)2
P
2. NaHCO3, MeOH
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warm
[Question ID = 9808]- H3C. [Option ID = 39226]
N(C2H5)2
- OCH3 [Option ID = 39227]
N(C2H5)2
- [Option ID = 39228]
CH2
- [Option ID = 39229]
C2H5
N
Me
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Correct Answer :-
CH2
[Option ID = 39228]
- H3C. [Option ID = 39226]
- The major product M and N formed in the following reactions are
CH2N2
N
CH3I/NaOH
M
OH
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[Question ID = 9809]-
Me
M =
N
OH
N =
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N
OCH3
[Option ID = 39230] -
M =
N
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OCH3
N =
N
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Me
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M =
N
N =
N
OCH3
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[Option ID = 39232] -
Me
M =
N =
N
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OH
[Option ID = 39233]
Correct Answer :-
M =
N =
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N
OCH3
[Option ID = 39232]
-
- When (R)-cyclohex-2-en-1-ol is treated with acid below gives
OH
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m-CPBA
[Question ID = 9810]-
OH
[Option ID = 39234] -
OH
[Option ID = 39235] -
OH
[Option ID = 39236] - None of these [Option ID = 39237]
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Correct Answer :-
OH
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[Option ID = 39235]
-
- The intermediate formed in the below reaction is
F
+
Br
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Mg
THF
[Question ID = 9811]- Grignard reagent forms dihalobenzene, adds to anthracene with displacement of fluorides anions to forms the product [Option ID = 39238]
- Mg reduces anthracene to a reactive dianion that bonds to the dihalobenzene [Option ID = 39239]
- A
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This download link is referred from the post: DUET Last 10 Years 2011-2021 Question Papers With Answer Key || Delhi University Entrance Test conducted by the NTA
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