General Knowledge
Ans : Tortoise is the name applied to the terrestrial species and turtle is the name applied to the aquatic species.
Ans : The theorem states that the square of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two sides.
Ans : The Gila Monster and the Beaded Lizard.
Ans : Gregor Johann Mendel
Ans : For the blubber or the oil in them.
Ans : The tiny air sacs in the lungs are called alveoli. It is through the walls of the alveoli that the exchange of gases takes place.
Ans : Ochlophobia
Ans : Jacob Schick
Ans : Rajahmundry
Ans : William Harvey, in 1628. People did not believe in what Harvey said and they opposed his ideas. It took many years for the opposition to die down.
Ans : Ultraviolet rays come from the sun. If all the ultraviolet rays emanating from the sun travelling to the earth were to reach the earth, all life on earth would be destroyed. But this does not happen, because a layer of ozone (20 to 50 km) above the earth's atmosphere absorbs the ultraviolet rays of the sun.
Ans : Measuring the strength of an electric current.
Ans : Thomas Alva Edison.
Ans : Salivary glands are located in the mouth. There are three pairs, one pair is located in front of the ears, one pair is located underneath the lower jaw and the third is under the tongue. Salivary glands secrete an enzyme called ptyalin, which helps in the digestion of starches. Saliva has an alkaline action. If you see many players chewing gum, it is because when a person is tense, the stomach produces more acids. The saliva, produced by chewing gum, neutralizes this acid.
Ans : Graphite, whose main constituent is carbon
Ans : The earthworm is called the farmer's friend because it helps him to keep the soil rich and loose so that plants can grow. As they burrow into soft soil, they swallow some of it, which passes through their bodies and finally is left behind as castings. This is enriched material.
Ans : George Stephenson
Ans : The Owl.
Ans : Nacl
Ans : Sodium Bicarbonate.
Ans : Liver and stomach.
Ans : Any of the three species of Fish, commonly referred to as four eyed fish. An anableps has the ability to see above and below the water at the same time.
Ans : Xerophyte
Ans : Earthem pots have tiny holes from which water seaps out to the surface. When this water evaporates, it takes away the latent heat of vaporisation and keeps the pot {and its contents) cool.
Ans : Neil Armstrong
Ans : Algae
Ans : A name commonly applied to jelly fish, found in tropical seas.
Ans : Bismuth
Ans : There have been several periods of time when much of the earth's surface became covered with ice. These different periods of time make up the glacial ages.
Ans : Common Salt
Ans : Ruminant is an animal that chews its cud and has a four-chambered stomach. When food is swallowed by a ruminant, it passes into the rumen or paunch, where it is stored, while the animal eats. Chewing and digestion are carried out at leisure. The food passes from the rumen to the reticulum, where it is formed into small masses and pushed up to the mouth to be chewed. When it is swallowed a second time it takes a different route. Gastric digestion takes place and the food passes into the intestine.
Ans : Molecules of oxygen, nitrogen and other gases in the air keep on spreading all around them.
Ans : Fog is water vapour condensing near the surface of the earth. Fog differs from clouds in that fog is close to the earth and clouds are in the sky.
Ans : Plaster of Paris
Ans : Porpoises are smaller than dolphins and they do not have beak like snouts of dolphins. Porpoises live in the shallow water of ocean bays and the mouths of rivers, while dolphins live out in the deeper waters.
Ans : 59 earth days.
Ans : Eight parts, called prahars. The Hindi word 'dupahar', for noon, is derived from 'du' (two) and pahar (prahar).
Ans : Foot-pound. Thus if an object weighing one pound were lifted through a distance of a foot, one footpound of work would be done.
Ans : Gravitational pull of the moon and to some extent the sun.
Ans : It bounces off ultraviolet radiation.
Ans : J.C.Bose
Ans : They secrete the excess salt in die body through this action. They get rid of this by means of a gland near the comer of the eyes.
Ans : An infection of the throat spreads rapidly. Quite a few varieties of bacteria double every half an hour. Gargling with warm water does not kill these bacteria, but it prevents their growth. Temperatures of more than 40 degrees Celsius are not conducive to the growth of bacteria. Any solution which has more than eight per cent salt inhibits the growth of bacteria. Thus, if you gargle with warm salt water, it will prevent the proliferation of bacteria.
Ans : Nicolus Copernicus (Bhaskaracharya of lllh Century A.D and Aryabhata of the fifth century A.D seem to be aware of this).
Ans : Sound is produced by the movement of columns of air. Strike a stainless steel glass with a spoon. A sound is produced. Stop the vibration of the steel glass with your fingers. There will be no sound. When water is being filled in a vessel, sound is produced because of the movement of the column of air. This column becomes smaller and smaller as the water level rises in the vessel. Hence the sound changes.
Ans : Vitamin D.
Ans : Dermis and Epidermis.
Ans : Knee jerk. It is the involuntary kick caused by a blow on the tendon just below the knee.
Ans : From their telescopes, astronomers could study objects in outer space that could not be seen with the naked eye. Radio telescopes are telescopes that can study long waves, which are not visible. They can do this using antenna, since radio waves are much longer than light waves. To be effective, radio telescope needs to be much larger than ordinary optical telescope,
Ans : In nature many animals resort to a number of ways to protect themselves from enemies or predators. This is called camouflage. The Polar Bear, having a white colour is an example of camouflage. Similarly zebra's colour confuses its enemy and serves as a camouflage.
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