JEE & NEETJEE Chemistry 100+ MCQ & Answer JEE Main Chemistry | page-07 | General Knowledge MCQ And Answer February 1, 2025 DSN MARATHI 61. The maximum number of electrons that can fit in all the orbitals with n = 2 and l = 1? A. 2 B. 4 C. 4 D. 8 Answer Option : C 62. Which of the following quantum numbers can distinguish between two electrons present in the same orbital? A. Azimuthal quantum number B. Principal quantum number C. Magnetic quantum number D. Spin quantum number Answer Option : D 63. How many orbitals can have the following quantum numbers, n = 3, l = 1, ml = 0? A. 1 B. 2 C. 3 D. 4 Answer Option : A 64. The maximum number of electrons that can fit in an orbital with n = 3 and l = 1? A. 10 B. 2 C. 8 D. 14 Answer Option : B 65. The concentration of dissolved oxygen in cold water can go up to _______. A. 8 ppm B. 10 ppm C. 10 ppm D. 14 ppm Answer Option : B 66. Brewery and sugar factory waste alter the quality of a water body by increasing _______. A. pH B. turbidity C. temperature D. COD and BOD Answer Option : D 67. Which of the following serves as an indicator of atmospheric pollution? A. fern B. liverworts C. hornworts D. epiphytic lichens Answer Option : D 68. The layer of atmosphere between 10km to 50km above the sea level is called as _______. A. troposphere B. stratosphere C. mesosphere D. thermosphere Answer Option : B 69. Formation of London smog takes place in _______. A. winter during day time B. summer during day time C. winter during morning time D. summer during morning time Answer Option : C 70. In 1984, the Bhopal gas tragedy took place because methyl isocyanate _______. A. reacted with CO2 B. reacted with DDT C. reacted with water D. reacted with ammonia Answer Option : C
61. The maximum number of electrons that can fit in all the orbitals with n = 2 and l = 1? A. 2 B. 4 C. 4 D. 8 Answer Option : C
62. Which of the following quantum numbers can distinguish between two electrons present in the same orbital? A. Azimuthal quantum number B. Principal quantum number C. Magnetic quantum number D. Spin quantum number Answer Option : D
63. How many orbitals can have the following quantum numbers, n = 3, l = 1, ml = 0? A. 1 B. 2 C. 3 D. 4 Answer Option : A
64. The maximum number of electrons that can fit in an orbital with n = 3 and l = 1? A. 10 B. 2 C. 8 D. 14 Answer Option : B
65. The concentration of dissolved oxygen in cold water can go up to _______. A. 8 ppm B. 10 ppm C. 10 ppm D. 14 ppm Answer Option : B
66. Brewery and sugar factory waste alter the quality of a water body by increasing _______. A. pH B. turbidity C. temperature D. COD and BOD Answer Option : D
67. Which of the following serves as an indicator of atmospheric pollution? A. fern B. liverworts C. hornworts D. epiphytic lichens Answer Option : D
68. The layer of atmosphere between 10km to 50km above the sea level is called as _______. A. troposphere B. stratosphere C. mesosphere D. thermosphere Answer Option : B
69. Formation of London smog takes place in _______. A. winter during day time B. summer during day time C. winter during morning time D. summer during morning time Answer Option : C
70. In 1984, the Bhopal gas tragedy took place because methyl isocyanate _______. A. reacted with CO2 B. reacted with DDT C. reacted with water D. reacted with ammonia Answer Option : C
