A. Democritus B. Bohr C. Rutherford D. Archimedes Democritus was a Greek philosopher who was the first person to use the term atom (atomos: meaning indivisible). He thought that if you take a piece of matter and divide it and continue to divide it you will eventually come to a point where you could not … Read more
A. Nitrogen D. Nydrogen C. Neon and argon D. Oxygen and nitrogen MONOATOMIC MOLECULE: Any element having only single atom is known as Mono atomic molecule. Ex ;- All the noble gases such as helium, neon, argon etc.
A. Eyes B. Nails C. Gums D. Nostrils Gingivitis – inflammation of the gum at the necks of the teeth, and. Periodontitis – inflammation affecting the bone and tissues of the teeth
A. Three B. Four C. Five D. Seven The bony cavity which contains the eyeball and its associated muscles, vessels, and nerves. In humans, seven bones make up each bony orbit. In humans, seven bones make up the bony orbit: Frontal bone Zygomatic bone Maxillary bone Sphenoid bone Ethmoid bone Palatine bone Lacrimal bone
A. Earth B. Mars C. Jupiter D. Mercury If you look down at our planet from outer space, most of what you see is water; 71% of the planet’s surface is covered by ocean and it is because of this that the Earth is sometimes called “the water planet”. Only about three-tenths of our globe … Read more
A. Exosphere B. Thermosphere C. Stratopause D. Mesopause The top of the mesosphere, called the Mesopause, is the coldest part of Earth’s atmosphere. Temperatures in the upper mesosphere fall as low as −101 °C (172 K; −150 °F), varying according to latitude and season.
A. 90 B. 180 C. 270 D. 360 Since a sphere has 360 degrees, the Earth is divided into 360 longitudes. The meridian opposite the Prime Meridian (on the other side of the Earth) is the 180° longitude and is known as the anti meridian.
A. Fibrous joint B. Cartilaginous joint C. Synovial joint D. Ball and socket joint Fibrous joints are connected by dense connective tissue consisting mainly of collagen. These joints are also called fixed or immovable joints because they do not move. Fibrous joints have no joint cavity and are connected via fibrous connective tissue. The skull bones … Read more
A. Earth rotation around its axis B. Earth revolution C. Earth rotation accompanied with its revolution. D. None of these We get day and night because the Earth spins (or rotates) on an imaginary line called its axis and different parts of the planet are facing towards the Sun or away from it. It takes … Read more
A. Partial Eclipse cycle B. Total Eclipse Cycle C. Saros Cycle D. None of the above