JEE & NEETJEE Chemistry 100+ MCQ & Answer JEE Main Chemistry | page-08 | General Knowledge MCQ And Answer February 1, 2025 DSN MARATHI 71. Air pollution that occurs in sunlight is _______. A. fog B. acid rain C. reducing smog D. oxidizing smog Answer Option : D 72. How many unit cells are divided equally in a face-centred cubic lattice? A. 2 B. 4 C. 6 D. 8 Answer Option : C 73. Copper crystalline in FCC with a unit cell length of 361pm. What is the radius of a copper atom? A. 108pm B. 128pm C. 157pm D. 181pm Answer Option : B 74. A crystalline solid ________. A. has no definite melting point B. has irregular 3-dimensional arrangements C. undergoes deformation of its geometry easily D. changes abruptly from solid to liquid when heated Answer Option : D 75. Each of the following solids shows the Frenkel defect except _______. A. AgI B. KCl C. ZnS D. AgBr Answer Option : B 76. A perfect black body has a unique characteristic feature as a _______. A. good radiator B. good absorber only C. good absorber and a good radiator D. neither a radiator nor an absorber Answer Option : C 77. Which of the following laws was formulated by Nernst? A. First law of thermodynamics B. Second law of thermodynamics C. Third law of thermodynamics D. None of the above Answer Option : C 78. Which of the following factor affects the heat of reaction based on Kirchhoff equation? A. volume B. pressure C. molecularity D. temperature Answer Option : D 79. Which of the following processes is used to do maximum work done on the ideal gas that is compressed to half of its initial volume? A. adiabatic B. isobaric C. isothermal D. isochoric Answer Option : A 80. Which of the following is the largest unit of energy? A. erg B. joule C. calorie D. electron volt Answer Option : C
71. Air pollution that occurs in sunlight is _______. A. fog B. acid rain C. reducing smog D. oxidizing smog Answer Option : D
72. How many unit cells are divided equally in a face-centred cubic lattice? A. 2 B. 4 C. 6 D. 8 Answer Option : C
73. Copper crystalline in FCC with a unit cell length of 361pm. What is the radius of a copper atom? A. 108pm B. 128pm C. 157pm D. 181pm Answer Option : B
74. A crystalline solid ________. A. has no definite melting point B. has irregular 3-dimensional arrangements C. undergoes deformation of its geometry easily D. changes abruptly from solid to liquid when heated Answer Option : D
75. Each of the following solids shows the Frenkel defect except _______. A. AgI B. KCl C. ZnS D. AgBr Answer Option : B
76. A perfect black body has a unique characteristic feature as a _______. A. good radiator B. good absorber only C. good absorber and a good radiator D. neither a radiator nor an absorber Answer Option : C
77. Which of the following laws was formulated by Nernst? A. First law of thermodynamics B. Second law of thermodynamics C. Third law of thermodynamics D. None of the above Answer Option : C
78. Which of the following factor affects the heat of reaction based on Kirchhoff equation? A. volume B. pressure C. molecularity D. temperature Answer Option : D
79. Which of the following processes is used to do maximum work done on the ideal gas that is compressed to half of its initial volume? A. adiabatic B. isobaric C. isothermal D. isochoric Answer Option : A
80. Which of the following is the largest unit of energy? A. erg B. joule C. calorie D. electron volt Answer Option : C
