- Copper and Zinc
- Tin and Zinc
- Copper and Tin
- Iron and Zinc
- black solid
- red-brown liquid
- colourless gas
- highly inflammable gas
- Rising tide while meeting river currents
- Friction from prevailing winds
- Spring tide and strong winds
- Unequal heating of oceans
- Durand line
- Space line
- Venus line
- Karman line
- Physical
- Chemical
- Physiological
- Morphological
- Lungs
- Liver
- Heart
- Kidneys
- Blood glucose level
- The body pH value
- Amount of hemoglobin
- None of the above
- 10 Billion years ago
- 15 Billion years ago
- 20 Billion years ago
- 25 Billion years ago
- Origin of Universe
- Origin of Sun
- Laws of physics
- None of above
- Nicolas Léonard Sadi Carnot
- Alessandro Volta
- Michael Faraday
- Friedrich Bessel
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