01. Which of the following is used as an indicator in the titration of a strong acid and a weak

31. Ziegler Natta catalyst is associated with _____. A. hydrogenation of alkenes B. hydroformylation of alkenes C. polymerisation of alkenes

41. Good conductors have many loosely bound _____. A. atoms B. electrons C. protons D. molecules Answer Option : B

51. Formation of interstitial compounds makes the transition metals more ________. A. soft B. ductile C. malleable D. hard Answer

61. The maximum number of electrons that can fit in all the orbitals with n = 2 and l =

71. Air pollution that occurs in sunlight is _______. A. fog B. acid rain C. reducing smog D. oxidizing smog

81. What is a necessary condition for a reaction to be spontaneous at all temperatures? A. 𐤃H < 𐤃G B.

91. The buffer region is represented by _______. A. the concave curve after adding titrant B. the flat curve after