Govt. Exams
Entrance Exams
Vitamin D is synthesized by our skin when exposed to ultraviolet-B (UVB) radiation from sunlight.
All three represent the same freezing point of water: 0°C, 32°F, and 273.15 K are equivalent.
Copper is an excellent conductor of electricity due to free electrons. Rubber, plastic, and ceramic are insulators.
Newton (N) is the SI unit of force. 1 Newton = 1 kg·m/s². Dyne is CGS unit, Joule is energy, Pascal is pressure.
Carbon dioxide (CO2) is the primary greenhouse gas responsible for global warming, released mainly through fossil fuel combustion.
An adult human body has 206 bones. Infants are born with approximately 270 bones, many of which are cartilage.
Pure water is neutral with a pH value of 7 at 25°C. Values below 7 are acidic and above 7 are basic.
