Chemistry Questions and Answers
General Knowledge Chemistry Questions with Answers cover chemical reactions, elements, and compounds. These are important in SSC, RRB, and B.Ed exams to develop basic scientific understanding
Chemistry
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71 questions
52. The number of g-molecule of oxygen in 6.02 x 1024CO molecules is
- 1 gram of molecule
- 0.5 gram of molecule
- 5 gram of molecule
- 10 gram of molecule
53. The most extensive, commercially useful source of thorium as monazite sand occurs in India at
- Orissa coast
- Travancore coast
- West Bengal coast
- Gujarat coast
54. The main active constituent of tea and coffee is
- nicotine
- chlorophyll
- caffeine
- aspirin
55. The maximum number of isomers for an alkene with molecular formula C4H8 is
- 5
- 4
- 2
- 3
59. The hottest part of the gas flame is known as
- luminous zone
- dark zone
- blue zone
- non-luminous zone
60. The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is
- carbon
- hydrogen
- oxygen
- nitrogen