Chemistry MCQ Quiz Hub

Chemistry MCQ Questions Set-2

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1. Which one is not metal




2. Which combination of atoms can form a polar covalent bond?




3. The nitrogen atom has 7 protons and 7 electronsThe nitride ion will have




4. The isotopes of chlorine with mass number 35 and 37 exist in the ratio of




5. In known elements the maximum number is of




6. A radioactive substance has a half life of four months three-fourth of the substance would decay in




7. Which one of the following elements is the poorest conductor of heat




8. Which is the gas used for making vegetables and vanaspathi from vegetable oils?




9. In nuclear reactorChain reaction is controlled by introducing




10. Natural Rubber is a Polymer of




11. Which one is the pure element




12. he credit for the discovery of transuranic element goes to




13. Which one among the following is the heaviest




14. Ethanol is converted into ethoxy ethane




15. How many moles are there in 140g of Si (atomic mass of silicon is 28)




16. Which of the following is the strongest acid?




17. Which Noble Gas has the highest First Ionization Energy?




18. The metal which reacts most violently with with cold water is




19. What is the IUPAC name of [Co(NH3)4Cl2]?




20. Electromagnetic radiation with maximum wavelength is




21. What are long chains of Carbon Molecules called




22. Which one of the following is used to induce artificial rain ?




23. The difference between a nuclear reactor and atomic bomb is that ___________




24. The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA ?




25. Who is the father of modern chemistry?




26. Heated saw dust catches fire when a drop of concentrated nitric acid is added to it. This is due to




27. Which acid is produced when milk gets sour?




28. A pure substance can only be




29. An atom has 7 electrons in its M - shell and contains 18 neutrons in its nucleus. What is its mass number




30. Most commonly used bleaching agent is




31. The bleeding of a wound is stopped by the application of ferric chloride because_____




32. The freezing point of water at 760mm pressure is




33. Orlon is a polymer of




34. Which of the following carbon compounds is used as a fire- extinguisher?




35. Li3PO4 compound name?




36. An element which is preserved under water is




37. Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at –6 C will be: (Kf for




38. The Most Abundant Rare Gas in the Atmosphere is




39. A gas absorbs a photon of 355 nm and emits at two wavelengths. If one of the emissions is at 680 nm the other is at :




40. Which solution has the highest pH?




41. Which one of the following is a natural colloid ?




42. The law of constant proportions was enunciated by




43. In a face centred cubic lattice atom A occupies the corner positions and atom B occupies the face centre positions. If one atom of B is missing from one of the face centred points the formula of the compound is 1) A2B5 2) A3B2 3) A2B3 4) A3B4




44. Which of these molecules are polar? Check all that apply.




45. The fundamental particles present in equal numbers in neutral atoms are




46. The particle with 13 protons and 10 electrons is




47. Positive ions are formed from neutral atoms by loss of




48. What is the conjugate base of H2O?




49. Which one of the following can be used to confirm wether drinking water contains a gamma emitting isotope or not




50. What is the simplest form of matter?