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MCQ Questions for Class 11 Chemistry sets 3

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1. Red phosphorus is chemically less reactive because




2. Which of the following will not produce hydrogen gas?




3. The structure of diBorane contains




4. Which of the following oxidation states are most characteristic for lead and tin respectively?




5. Among the C-X bond (where, X = Cl, Br, l) the correct decreasing order of bond energy is




6. In the upper layers of atmosphere ozone is formed:




7. Oxygen gas can be prepared from solid KMnO4 by




8. Which is not the correct statement for Boron?




9. When excess of Kl is added to copper sulphate solution:




10. Which of the following statements regarding ozone is not correct?




11. K2[Hgl4] detect the ion/group




12. Which of the following has least covalent P−H bond?




13. If Cl2 gas is passed in to aqueous solution of Kl containing some CCl4 and the mixture is shaken then:




14. Which of the statement is true for the above sequence of reactions?




15. Ammonia gas can be dried by




16. Inert gases such as helium behave like ideal gases over a wide range of temperature .However; they condense into the solid state at very low temperatures. It indicates that at very low temperature there is a




17. In general, the Boron Trihaides act as




18. On heating ozone, its volume.




19. In the compound of type ECl3, where E = B, P, As, or Bi, the angle Cl – E – Cl for different E are ion the order:




20. If two compounds have the same empirical formula but different molecular formula they must have




21. Identify the chiral molecule among the following:




22. 0.0833mol of carbohydrate of empirical formula CH2O contain 1g of hydrogen. The molecular formula of the carbohydrate is




23. The displacement of electrons in a multiple bond in the presence of attacking reagent is called




24. Which of the following cannot be represented by resonance structures?




25. An organic compound which produces a bluish green coloured flame on heating in presence of copper is




26. Which one is strongest acid among following options?




27. Insulin contains 3.4% sulphur. The minimum molecular weight of insulin is




28. What is the correct IUPAC name of




29. 59 g of an amide obtained from a carboxylic acid, RCOOH, liberated 17 g of ammonia upon heating with alkali. The acid is




30. In the Dumas method, the nitrogen present in organic compound gets converted to




31. 0.0833mol of carbohydrate of empirical formula CH2O contain 1 g of hydrogen. The molecular formula of the carbohydrate is




32. The compound MCQ Questions for Class 11 Chemistry Chapter 12 Organic Chemistry Some Basic Principles and Techniques with Answers 3 is known by which of the following names




33. Which one of the following conformations of cyclohexane is chiral?




34. If 0.228 g of silver salt of dibasic acid gave a residue of 0.162 g of silver on ignition then molecular weight of the acid is




35. If there is no rotation of plane polarized light by a compound in a specific solvent, thought to be chiral, it may mean that




36. Which element is estimated by Carius method




37. Inductive effect involves




38. A crystalline solid possess which one of the following property?




39. Which of the following behaves both as a nucleophile and as an electrophile?




40. A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is ______.




41. The position of double bond in alkenes can be located by




42. Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80 – 100°C forms which one of the following products?




43. Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?




44. Which of the following compounds will exhibit geometrical isomerism?




45. The order of decreasing reactivity towards an electrophilic reagent, for the following : (i) Benzene (ii) Toluene (iii) Chlorobenzene (iv) Phenol would be:




46. Pure methane can be prepared by




47. Hydrocarbon containing following bond is most reactive




48. The compound C3H4 has a triple bond, which is indicated by its reaction with




49. The angle strain in cyclobutane is




50. The first fraction obtained during the fractionation of petroleum is:




51. 2 – Phenylpropene on acidic hydration gives




52. The coal tar fraction which contains phenol is:




53. Which one of these is not true for benzene?




54. The catalyst used in Friedel – Crafts reaction is




55. Alkyl halides react with dialkyl copper reagents to give?




56. The lowest alkene, that is capable of exhibiting geometrical isomerism is




57. Presence of a nitro group in a benzene ring




58. The agricultural field that produces maximum methane gas into atmosphere is




59. Fluorosis, the bone disease, is caused by the presence of




60. The most harmful air pollutant produced by automobiles is




61. Which of the following is responsible for depletion of ozone layer in the upper strata of the atmosphere?




62. Which of the following acts as a sink for CO?




63. Which is most harmful for life on globe?




64. One of the following is the chief source of water and soil pollution




65. What is the indicator of pollution in water?




66. The false statement among the followings:




67. A disease caused by eating fish contaminated by industrial waste, containing mercury compounds, is called as




68. Identify the wrong statement in the following:




69. Synthesis of ethanal commercially from which of the following reagent is the part of green chemistry?




70. Which of the following is produced by a reaction of ultraviolet light?




71. Why certain parts of water bodies contain more number of algae?




72. The substance which is a primary pollutant?




73. The volume of 2.8 g of carbon monoxide at 27°C and 0.0821 atm is




74. In van der Waal equation of state of gas laws, the constant b is a measure of




75. Which of the following statement is wrong for gases?




76. The critical volumes of four gases A, B, C, D are respectively 0.025 L, 0.312 L, 0.245 L, 0.432 L, the gas with highest value of van der Wall constant b is




77. The value of universal gas constant R depends on




78. A gas deviates from ideal behavior at a high pressure because its molecules:




79. The state of matter that shows the uniformity of behavior :




80. If 20cm³ gas at 1 atm. is expanded to 50 cm³ at constant T, then what is the final pressure




81. How many of the know elements exist as gases at 25°C?




82. The states of matter having no definite shape but definite volume:




83. The rise or fall of a liquid within a tube of small bore is called:




84. The theory which explains that gases consist of molecules, which are in rapid option is known as




85. Falling drop of water is spherical due to: