2017 Neet - Chemistry


1. Name the gas that can readily decolourise acidified `KMnO_4` solution




2. Mechanism of a hypothetical reaction `X_2 + Y_2 -> 2XY` is given below :
(i) `X_2 -> X + X`(fast)
(ii) `X + Y_2 hArr XY + Y` (slow)
(iii) `X + Y -> XY` (fast)
The overall order of the reaction will be :




3. The element Z = 114 has been discovered recently. It will belong to which of the following family/group and electronic configuration?




4. The heating of phenyl-methyl ethers with HI produces




5. Which one is the correct order of acidity?




6. Predict the correct intermediate and product in the following reaction:






7. The equilibrium constant of the following are






8. Which one is the most acidic compound ?






9. The correct increasing order of basic strength for the following compounds is






10. Ionic mobility of which of the following alkali metal ions is lowest when aqueous solution of their salts are put under an electric field ?




11. The most suitable method of separation of 1 : 1 mixture of ortho and para-nitrophenols is




12. `HgCl_2` and `I_2` both when dissolved in water containing `I^-` ions the pair of species formed is




13. Mixture of chloroxylenol and terpineol act as




14. An example of a sigma bonded organometallic compound is




15. A first order reaction has a specific reaction rate of `10^(-2) sec^(-1)`. How much time will it take for 20g of the reactant to reduce to 5 g?




16. Match the interhalogen compounds of column-I with the geometry in column II and assign the correct code.






17. Concentration of the `Ag^+` ions in a saturated solution of `Ag_2C_2O_4` is `2.2 × 10^(-4) mol L^(-1)` Solubility product of `Ag_2C_2O_4` is




18. In the electrochemical cell :-
Zn | `ZnSO_4` (0.01M) || `CuSO_4`(1.0 M) | Cu, the emf of this Daniel cell is `E_1`. When the concentration of `ZnSO_4` is changed to 1.0 M and that of `CuSO_4` changed to 0.01M, the emf changes to `E_2`. From the followings, which one is the relationship between `E_1` and `E_2`? (Given, RT/F =0.059)




19. Which of the following pairs of compounds is isoelectronic and isostructural?




20. The IUPAC name of the compound below is






21. Which one is the wrong statement?




22. Which is the incorrect statement?




23. The species, having bond angles of `120^@` is




24. For a given reaction, `Delta`H = 35.5 kJ `mol^(-1)` and `Delta`S = 83.6 `JK^(-1) mol^(-1)`. The reaction is spontaneous at : (Assume that `Delta`H and `Delta`S do not vary with temperature)




25. Which of the following is a sink for CO ?




26. If molality of the dilute solutions is doubled, the value of molal depression constant (`K_f`) will be




27. Which of the following is dependent on temperature?




28. Which one of the following statements is not correct?




29. Identify A and predict the type of reaction:






30. The correct order of the stoichiometries of `AgCl` formed when `AgNO_3` in excess is treated with the complexs: `CoCl_3. 6NH_3`, `CoCl_3. 5NH_3`, `CoCl_3. 4NH_3` respectively is




31. The correct statement regarding electrophile is




32. A gas is allowed to expand in a well insulated container against a constant external pressure of 2.5atm from an initial volume of 2.50 L to a final volume of 4.50L. The change in internal energy `Delta`U of the gas in joules will be




33. Which of the following reactions is appropriate for converting acetamide to methanamine?




34. With respect to the conformers of ethane, which of the following statements is true?




35. In which pair of ions both the species contain S - S bond?




36. It is because of inability of `ns^2` electrons of the valence shell to participate in bonding that




37. Correct increasing order for the wavelengths of absorption in the visible region the complexes of `Co^(3+)` is




38. Consider the reactions & Identify A, X, Y and Z:






39. Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?






40. Which of the following pairs of species have the same bond order?




41. Extraction of gold and silver involves leaching with `CN^-` ion. Silver is later recovered by




42. A 20 litre container at 400 K contains `CO_2(g)` at pressure 0.4 atm and an excess of SrO (neglect the volume of solid SrO). The volume of the container is now decreased by moving the movable piston fitted in the container. The maximum volume of the container, when pressure of `CO_2` attains its maximum value, will be: (Given that: `SrCo_3 (s) hArr SrO(s) + CO_2 (g)`, Kp = 1.6 atm)




43. Pick out the correct statement with respect to `[Mn(CN)_6]^(3-)`:




44. The reason for greater range of oxidation states in actinoids is attributed to:




45. Which of the following statements is not correct:




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