2016 Neet I - Chemistry


1. Consider the molecules `CH_4`, `NH_3` and `H_2O`. Which of the given statements is false?




2.


In the reaction X and Y are (refer fig)




3. Among the following the correct order of acidity is




4. The rate of first order reaction is `0.04 mol l^(-1)1 s^(-1)` at 10 seconds and `0.03 mol l^(-1)1 s^(-1)` at 20 seconds after initiation of the reaction. The half – life period of the reaction is




5. Which one of the following characteristics is associated with adsorption?




6. Which of the following statements is false?




7. Which of the following statements about hydrogen




8. The correct statement regarding a carbonyl compound with a hydrogen atom on its alphacarbon is




9. In which of the following options the order of arrangement does not agree with the variation of property indicated against it?






10. MY and `NY_3` two nearly insoluble salts, have the same `k_(sp)` values of `6.2 xx 10^(-13)` at room temperature. Which statement would be true in regard of MY and `NY_3`?




11. In a protein molecule various amino acids are linked together by




12. Natural rubber has




13. Match items of Column I with the item of Column II and assign the correct code
Column IColumn II
(a) Cynide process(i) Ultrapure Ge
(b) Froth floatation process(ii) Dressing of ZnS
(c) Electrolytic reduction(iii) Extraction of Al
(d) Zone refining(iv) Extraction of Au
(v) Purification of Ni





14. Which one of the following statements is correct when `SO_2` is passed through acidified `K_2Cr_2O_7` solution?




15. The electronic configurations of Eu (Atomic No.63), Gd (Atomic No.64 and Tb (Atomic No.65) are




16. Two electrons occupying the same orbital are distinguished by




17. When copper is heated with cone. `HNO_3` it produces




18. Which of the following regents would distinguish cis-cyclopenta-1, 2-diol from the trans-isomer?




19. The correct thermodynamic condtions for the spotaneous eaction at all temprature is






20. Lithium has a bcc structure. Its density is 530 kg `m^(-3)` and its atomic mass is 6.94g `mol^(-1)`. Calculate the edge lenth of a unit cell of Lithium metal. (`N_A = 6.02 × 10^(23) mo^(l-1)`)




21. Which one of the following orders is correct for the bond dissociation enthalpy of halogen molecules?




22. Which of the following is an analgesic ?




23. Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen escapes in the time required for one-half of the hydrogen to escape?




24. Consider the nitration of benezene using mixed conc. H2SO4 and HNO3. If a large amount of `KHSO_4` is added to the mixture, the rate of nitration will be




25. Predict the correct order among the following




26. The product obtained as a result of a reaction of nitrogen with `CaC2_` is




27. Consider the following liquid — vapour equilibrium.
Liquid `hArr` Vapour.
Which of the following relations is correct?




28. Match the compounds given in column I with the hybridization and shape given in column II and mark the correct option.
Column IColumn II
(a) `XeF_6`(i) distorted octahedral
(b) `XeO_3`(ii) square planar
(c) `XeOF_4`(iii) pyramidal
(d) `XeF_4`(iv) square pyramidal





29. Which of the following has longest C – O bond length? (Free C – O bond length in CO is 1.28 `A^o`.)




30. The pressure of `H_2` required to make the potential of `H_2` – electrode zero in pure water at 298 K is




31. The addition of a catalyst during a chemical reaction alters which of the following quantities?




32. The ionic radii of `A^+` and `B^-` ions are `0.98 × 10^(-10) m` and `1.81 × 10^(-10) m`. The coordination number of each ion in AB is




33. Which is the correct statement for the given acids?




34. Fog is colloidal solution of




35. Which of the following statements about the composition of the vapour over an ideal 1: 1 molar mixture of benzene and toluene is correct? Assume that the temperature is constant at `25^o` C. (Given, Vapour Pressure Data at `25^o` C, benzene = 12.8 kPa, toluene = 3.85 kPa)




36. The correct statement regarding the comparison of staggered and eclipsed conformations of ethane, is




37. The reaction below can be classified as:






38. The product formed by the reaction of an aldehyde with a primary amine is




39. Which of the following biphenyl is optically active?






40. For the following reactions, Which of the following statements is correct?






41. At `100^o`C the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732mm. If `K_b` = 0.52, the boiling point of this solution will be




42. The correct statement regarding RNA and DNA, respectively is




43. The correct statement regarding the basicity of arylamines is




44. Which one given below is a non-reducing sugar?




45. The pair of electron in the given carbanion, `CH_3CH ≡ Co+`, is present in which of the following orbitals?




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