General Science Questions and Answers
General Knowledge General Science Questions with Answers enhance scientific understanding in physics, chemistry, and biology. Useful for SSC, RRB, and NDA exams, these questions strengthen your general science foundation
General Science
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124 questions
41. The two elements that are frequently used for making transistors are
- boron and aluminium
- silicon and germanium
- iridium and tungsten
- niobium and columbium
44. In fireworks, the green flame is produced because of
- sodium
- barium
- mercury
- potassium
45. Permanent hardness of water can be removed by adding
- chlorine
- washing soda
- potassium permanganate
- bleaching powder
47. LPG consists of mainly
- methane, ethane and hexane
- ethane, hexane and nonane
- methane, hexane and nonane
- methane, butane and propane
49. Production of chlorofluorocarbons (CFC) gas which is proposed to be banned in India, is used in which of the following domestic products?
- Television
- Refrigerator
- Tube light
- Cooking gas