Recently Replied Questions

• Solid state Doubt
  1) A metallic element crystallises into a lattice containing a sequnece of layers of ABABAB.. Any packing of spheres leaves out voids in the lattice. Percentage of Empty Space (by Volume) is - a)52% b)48% c)50% d)74% Its clea ...
  0·2· #Chemistry#Physical Chemistry
  replied2010-04-07 09:31:02
• RTPF
  Arrange the following in increasing order of extent of hydrolysis (A) PCl3 > AsCl3 > SbCl3 > BiCl3 (B) PCl3 > AsCl3 > BiCl3 > SbCl3 (C) BiCl3 > SbCl3 > AsCl3 > PCl3 (D )BiCl3 > SbCl3 > AsCl3 â ...
  0·14· #Chemistry#Inorganic Chemistry
  replied2010-04-07 02:55:00
• RTPF
  Arrange the following in increasing order of extent of hydrolysis (A) PCl3 > AsCl3 > SbCl3 > BiCl3 (B) PCl3 > AsCl3 > BiCl3 > SbCl3 (C) BiCl3 > SbCl3 > AsCl3 > PCl3 (D )BiCl3 > SbCl3 > AsCl3 â ...
  0·14· #Chemistry#Inorganic Chemistry
  replied2010-04-07 02:41:58
• RTPF
  Arrange the following in increasing order of extent of hydrolysis (A) PCl3 > AsCl3 > SbCl3 > BiCl3 (B) PCl3 > AsCl3 > BiCl3 > SbCl3 (C) BiCl3 > SbCl3 > AsCl3 > PCl3 (D )BiCl3 > SbCl3 > AsCl3 â ...
  0·14· #Chemistry#Inorganic Chemistry
  replied2010-04-07 02:21:21
• RTPF
  Arrange the following in increasing order of extent of hydrolysis (A) PCl3 > AsCl3 > SbCl3 > BiCl3 (B) PCl3 > AsCl3 > BiCl3 > SbCl3 (C) BiCl3 > SbCl3 > AsCl3 > PCl3 (D )BiCl3 > SbCl3 > AsCl3 â ...
  0·14· #Chemistry#Inorganic Chemistry
  replied2010-04-06 22:31:14
• RTPF
  Arrange the following in increasing order of extent of hydrolysis (A) PCl3 > AsCl3 > SbCl3 > BiCl3 (B) PCl3 > AsCl3 > BiCl3 > SbCl3 (C) BiCl3 > SbCl3 > AsCl3 > PCl3 (D )BiCl3 > SbCl3 > AsCl3 â ...
  0·14· #Chemistry#Inorganic Chemistry
  replied2010-04-06 22:18:57
• RTPF
  Arrange the following in increasing order of extent of hydrolysis (A) PCl3 > AsCl3 > SbCl3 > BiCl3 (B) PCl3 > AsCl3 > BiCl3 > SbCl3 (C) BiCl3 > SbCl3 > AsCl3 > PCl3 (D )BiCl3 > SbCl3 > AsCl3 â ...
  0·14· #Chemistry#Inorganic Chemistry
  replied2010-04-06 22:12:47
• RTPF 9
  An optically active alcohol (A) [C6H10O] absorbs 2 moles of hydrogen per mole of [A] upon catalytic hydrogenation and gives a product [B].[B] is resistant to oxidation by CrO3 and does not show any optical activity.What is no ...
  0·3· #Chemistry#Organic Chemistry
  replied2010-04-06 22:11:54
• IIT 2005
  Cos(α - β)=1 & cos(α + β)= 1/e ; where α,β ε [-π,π] The number of pairs (α,β) which satisfy both the equations is -- (a) 0 (b) 1 (c) 2 (d) 4 ...
  0·2· #Mathematics#Trignometry
  replied2010-04-06 21:43:27
• Advice needed
  with very few days left for jee,what would be the right way of approach now? a)solve as many fiitjee and past iit ques papers as possible. b)keep revising the chapters again and again etc plz give ur opinion. ...
  0·2· #Miscellaneous
  replied2010-04-06 00:52:00
• The Final Assault - Last Days before IIT-JEE
  Getting into the IITs - the hallowed portals of high class engineering education in India requires one to cope with immense competition, the changing pattern of the exam year after year and in the end giving one's best during ...
  0·20· #Colleges and Admissions#Counseling
  replied2010-04-05 22:23:40
• Examiner's Mind
  Which species is not coloured ? (a) Ni(DMG)2 (b) [Co(SCN)4]2- (c) [Fe(H2O)5SCN]2+ (d) [Al(OH)4]- ...
  0·6· #Chemistry#Inorganic Chemistry
  replied2010-04-04 23:58:30
• 10th April 2010
  How are u (IIT JEE 2010 aspirants) planning to spend Saturday,10th April ?? Please tell,,Fiitjee said to do 'Pranayam' and yoga, which i dont know and some say to see movies and all..so not sure..pls reply. ...
  0·6· #Miscellaneous
  replied2010-04-04 20:34:07
• Examiner's Mind
  Which species is not coloured ? (a) Ni(DMG)2 (b) [Co(SCN)4]2- (c) [Fe(H2O)5SCN]2+ (d) [Al(OH)4]- ...
  0·6· #Chemistry#Inorganic Chemistry
  replied2010-04-04 20:32:26
• Nitrogen doubt
  Which Nitrogen oxide does not have a coordinate bond ?? Its NO right ? ...
  0·4· #Chemistry#Inorganic Chemistry
  replied2010-04-04 20:21:57
• RTPF
  *Image* 2 moles of the above compound + H+ ---> ...
  0·2· #Chemistry#Organic Chemistry
  replied2010-04-04 10:03:40
• Propose Mechanism
  Please can anyone propose mechanism for this *Image* ...
  0·3· #Chemistry#Organic Chemistry
  replied2010-04-04 10:03:31
• RTPF AR
  S1 : The reaction of o-bromoanisole gives only meta-aminoanisole on reaction with KNH2 in liquid ammonia. S2 : The above reaction is an example of elimination-addition mechanism. ...
  0·2· #Chemistry#Organic Chemistry
  replied2010-04-03 03:48:48
• Give the products ---
  *Image* The above compound + Q 1. B2D6/CH3COOD Q 2. B2H6/D2SO4/D2O Q 3. B2D6/dil H2SO4 ...
  0·5· #Chemistry#Organic Chemistry
  replied2010-04-03 03:16:22
• Give the products ---
  *Image* The above compound + Q 1. B2D6/CH3COOD Q 2. B2H6/D2SO4/D2O Q 3. B2D6/dil H2SO4 ...
  0·5· #Chemistry#Organic Chemistry
  replied2010-04-03 03:13:52
• RTPF Assertion Reason
  S1 : A mixture of primary,secondary and tertiary amines is formed in good yield by heating carbonyl compounds with NH3 and H2 in presence of a catalyst. S2 : The eqb. constant for addition of NH3 to all carbonyl compounds are ...
  0·4· #Chemistry#Organic Chemistry
  replied2010-04-03 02:59:59
• RTPF Assertion Reason
  S1 : A mixture of primary,secondary and tertiary amines is formed in good yield by heating carbonyl compounds with NH3 and H2 in presence of a catalyst. S2 : The eqb. constant for addition of NH3 to all carbonyl compounds are ...
  0·4· #Chemistry#Organic Chemistry
  replied2010-04-03 02:56:37
• OrGaNiC
  *Image* (i) CH2PPh3 (ii) CH2I2/Zn -----> ?? ...
  0·6· #Chemistry#Organic Chemistry
  replied2010-04-03 02:48:20
• OrGaNiC
  *Image* (i) CH2PPh3 (ii) CH2I2/Zn -----> ?? ...
  0·6· #Chemistry#Organic Chemistry
  replied2010-04-02 21:37:57
• OrGaNiC
  *Image* (i) CH2PPh3 (ii) CH2I2/Zn -----> ?? ...
  0·6· #Chemistry#Organic Chemistry
  replied2010-04-02 21:35:49
• Hoffmann
  CH3 O | || CH3--C----C----NH2 + Br2/KOH/Δ -----> ?? | Br IS this the final product -- CH3 | CH3C=NH ...
  0·3· #Chemistry#Organic Chemistry
  replied2010-04-02 21:24:45
• MTG Hydrogen
  1. Which of the following statements is not correct ? (a). Pure para hydrogen can be obtained by cooling ordinary hydrogen to about 20 K. (b). The ratio of ortho and para hydrogen at 300 K and above is 3 : 1. (c). The ratio o ...
  0·7· #Chemistry#Inorganic Chemistry
  replied2010-04-01 20:21:55
• MTG s-block 1
  1. Which of the following statements is false ? (a) Saline hydrides are stoichiometric compounds. (b) Ionic hydrides are crystalline,non-metallic and non-conducting in solid state. (c) The melts of ionic hydride are non-condu ...
  0·6· #Chemistry#Inorganic Chemistry
  replied2010-04-01 20:20:27
• Anti or Syn
  *Image* + (i) Hg(OAc)2/HOH/THF ---> ?? (ii) NaBH4/NaOH There will be anti addition of water or syn addition ?? ...
  0·11· #Chemistry#Organic Chemistry
  replied2010-03-31 09:57:47
• Anti or Syn
  *Image* + (i) Hg(OAc)2/HOH/THF ---> ?? (ii) NaBH4/NaOH There will be anti addition of water or syn addition ?? ...
  0·11· #Chemistry#Organic Chemistry
  replied2010-03-31 06:36:19