Skip to content- The origin of earth dates back to approximately? 4.6 billion year.
- The dates on which day and night is equal are? 21st march and 23rd September.
- Hematite is an ore of iron.
- Earth completes one rotation on its axis in? 23 hours 56 mints and 4.9 sec.
- Which of the following gases is most predominant in the sun? Hydrogen.
- The coldest planet is Neptune.
- The Cornea of the eyes is the only part of body without blood supply.
- The Average weight of man‘s brain is 4.8 ounces.
- The Average weight of woman‘s brain is 4.4 ounces.
- The most common element in the atmosphere is Nitrogen (N), which is present at 78.08 percent by volume and 75.52 percent by mass.
- The most common element in the universe is Hydrogen (H), according for 90 percent of all known matter in the universe,
and 68 percent by mass in the Solar System. - Radium was discovered by Mario Curie Pierre Curie.
- Railway Engine was invented by Stephenson.
- The largest bone of human body is Thigh Bone.
- The proportion of water in human body is about 85%. (Blood in Human Body 5-6 Liter 10 % of total volume).
- Cockroach is considered as the ancient insect of the world.
- Rickets is a disease of the bones ( due to deficiency of Vitamin D).
- Sound will travel fastest in Solids.
- Lack of oxygen at high altitude produces bleeding.
- Chronometer is used to measure time while on ship.
- Dental enamel is the hardest thing present in a human body.
- The density of a liquid is measured by Hydrometer.
- Fathom is the unit of measurement of depth.
- Iron is the most widely used metal.
- A human body has 236 joints. (206 bones , new baby contains 300). There are 24 ribs in a human body.
- A color blind person cannot distinguish between Red and Green.
- Hippocrates is considered as the father of Medicine.
- Platinum is the costliest metal in the world.
- The main component of a TV is a cathode ray tube.
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