General Knowledge in Science
1.
1 To 150 Click Here
2.
151 To 300 Click Here
3.
301 To 450 Click Here
4.
451 To 600 Click Here
5.
600 To 750 Click Here
6.
751 To 7.... Click Here
No. | Question | Answer |
151 | Bismuth was discovered by | Valentine |
152 | The biggest plant seed is | Cocodemer |
153 | Toxicology is the study of | Poisons |
154 | Virology is the study of | Viruses |
155 | Paleontology is the study of | Fossils |
156 | Calorimeter is used to measure | Quantity of heat |
157 | Chronometer was invented by | John Harrison |
158 | Stethoscope was invented by | William Stockes |
159 | Spinning frame was invented by | Sir Richard Arkwright |
160 | Al stands for | Aluminium |
161 | Gd stands for | Gadolinium |
162 | Ir stands for | Iridium |
163 | Bi stands for | Bismuth |
164 | The Chemical formula of sodium bicarbonate is | NaHCO3 |
165 | The chemical formula of common salt is | Nacl |
166 | The chemical formula of washing soda is | Na2CO3,IOH2O |
167 | The chemical formula of lime soda is | CaCO3 |
168 | The chemical formula of chloroform is | CHcl3 |
169 | The study of grasses is known as | Agrostology |
170 | The study of antiquities is known as | Archaeology |
171 | The study of the duration of life is known as | Chronobiology |
172 | The study of bacteria is known as | Bacteriology |
173 | Nylon was invented by | Dr.Wallace H.Carothers |
174 | Electric razor was invented by | Jacob Schick |
175 | The symbol of silver is | Ag |
176 | The symbol of silicon is | Si |
177 | The symbol of titanium is | Ti |
178 | Calcium oxide is commonly known as | Quick lime |
179 | A deviation of light passing from one medium to another is known as | Refraction |
180 | An apparatus for generation of atomic energy is called a | Reactor |
181 | A machine used for converting mechanical energy into electrical energy is called a | Generator |
182 | The first Indian woman in space was | Kalpana Chawla |
183 | The revolver was invented by | Samuel Colt |
184 | The refrigerator was invented by | J.Perkins |
185 | Which is the only common metal that is liquid at room temperature? | Mercury |
186 | When a fire is caused by an electric short circuit, why must you not throw water? | If you throw water on a fire caused due to short circuit, you may be electrocuted because water is a good conductor of electricity. |
187 | Why do we see lightning much before we hear thunder? | This is because light travels much faster than sound. Light travels @ 2.99 x 108 mt / sec (2,99,000 km/sec) whereas sound travels @ 333 mt/sec. |
188 | Which planet is the closest to the Sun? | Mercury |
189 | Which is the hottest planet? | Venus |
190 | How much time does the earth take to complete a revolution around the sun? | 365 % days. |
191 | Why are whales hunted? | For the blubber or the oil in them. |
192 | Where do platypuses live? | In burrows near water. |
193 | How many days does the moon take to go round the earth? | 27 1/3 days. |
194 | Among the insects that are extant, (that are living still), which is the most ancient? | Cockroach. |
195 | What is meant by fulcrum? | Fulcrum is the point about which a bar or lever will rotate, when a force is applied at any distance from that point or axis. |
196 | What kind of leaves do silkworms thrive on? | Mulberry leaves. |
197 | Why is it dangerous to look at die sun during an eclipse? | During solar eclipse, the ultraviolet rays are in such high proportion in sunrays, that they can cause irrepairable damage to the eye. |
198 | How does a Pitcher Plant eat flies? | A Pitcher Plant is hollow and tubular. The surfaces are slippery and they have hairs, which point downwards. When an insect lands on a pitcher plant, it is impossible for it to escape because of the slippery surface and the downward-pointed hairs. It is then easily digested. |
199 | What is the Indian name for the planet Mercury? | Budha. |
200 | Where in India do the migratory cranes of Siberia settle down? | The Rann of Kutch. |
201 | How many arms does a starfish have? | Usually five. |
202 | What is a solar eclipse? | The moon comes in between the sun and the earth, and thereby prevents sunlight from reaching the earth. |
203 | Who first saw mountains and craters on the moon using a telescope? | Galileo Galilei |
204 | Which is the largest animal on land? | African Elephant. |
205 | Why does a rhinoceros spend so much time in mud? | To keep cool and protect itself from insect bites. |
206 | Which country first used fingerprints to identify people? | Assyria and China. |
207 | In which country was silk first made? | China. |
208 | What is cholesterol? | Cholesterol is a fat found in the human body and the body of other large animals. In its pure form it looks like white sugar. It is made up of tiny crystals, which can be seen under a microscope. It is said that too much cholesterol in the blood is responsible for the hardening of arteries and for various other heart ailments. |
209 | How did the watch get its name? | From the fact that you have to watch it to know the time. |
210 | What is vulcanisation of rubber? | The process of hardening rubber by adding sulphur and heating the mixture is vulcanisation. Vulcanisation was discovered by Charles Goodyear. Raw rubber is sticky. It hardens when the temperature is low and softens when it is high. Charles Goodyear discovered that by combining raw rubber with sulphur and by heating it, the rubber becomes stronger and elastic and also resistant to solvents. Today almost all rubber, whether natural or synthetic is vulcanized. |
211 | When faced with danger what does a Pangolin do? | It rolls into a ball. |
212 | Where is the entrance to a baya's nest? | At the bottom of the nest. |
213 | What is glass made from? | Limestone, Silica and Soda ash. |
214 | What is the microscopic study of plant and animal tissue called? | Histology. |
215 | How does a mariner's compass help the mariner? | The needle of the compass always points towards the magnetic north pole. This indicates the direction in which the ship is moving. |
216 | Which is the second largest planet in our Solar System? | Saturn. |
217 | How many weeks after birth does the young one of a cat opens its eyes? | Three weeks. |
218 | The arms of the Octopus have sucker cups. What is the use of these cups? | To hold onto a surface. |
219 | What food does a bear love most? | Honey. |
220 | How did the Romans rub off what was written on a wooden slate coated with wax? | By heating the slate, the wax was melted. The slate became ready to reuse. |
221 | What are seashells? | Outer casings of soft-bodied animals, called molluscs. |
222 | How is a pearl formed within the body of an oyster? | A pearl is formed when a grain of sand or other foreign matter gets between the hard outer shell and the inner coat called the mantle, of a mollusc. The mollusc surrounds the irritation with nacre, a secretion from the mantle. Many thin layers of nacre give the pearl its lustre. |
223 | How much time does Pluto take to complete a revolution around the sun? | 248 years. |
224 | What is a Catamaran? | A boat with twin parallel hulls. [From the Tamil words katta and maram, meaning tied up (katta) tree (maram). |
225 | How many ears does a spider have? | None. |
226 | How much time does light take to reach the earth from the sun? | 8 minutes. |
227 | What is acceleration? | The time rate at which the velocity of a point is changing is acceleration. Velocity is just the speed (miles per hour or kilometres per second). The term acceleration is used when the speed keeps increasing. The term deceleration is used when the speed becomes less and less. |
228 | How does a spider eat its food? | The spider inserts his fangs into the victim's body and uses them as straws to suck out the liquid. |
229 | Who invented the telescope? | Hans Lippershey. |
230 | Why do people living in the deserts prefer white colour for their robes? | White coloured robes do not absorb light, whereas dark-coloured clothes absorb the light and conduct heat to the body. |
231 | What is common to dolphins and humans? | They are both mammals. |
232 | In which country was the day first divided into 12 parts? | Babylon (modern Iraq). |
233 | How does a rocket move forward? | It moves forward due to propulsion. You must have seen that a boatman pushes the water backwards with his oar. This creates a force in the forward direction. This is propulsion. Newton's third law of motion states action and reaction are equal and opposite. In a rocket when hot gases come out of the rear with great force as a result of combustion, a force is created in the opposite direction. This takes the rocket forward. |
234 | What are the things necessary to start a fire? | Heat, fuel and oxygen. |
235 | How many legs does a butterfly have? | Six. |
236 | Who invented the aeroplane heavier than an air machine that could fly? | Orville and Wilbur Wright. |
237 | Who invented the modern lift? | Elisha Otis. |
238 | Why can't cranes perch on trees branches? | They cannot curl their toes. As a result they cannot have a firm grip on a branch. |
239 | Ancient Sumenans used to write on clay. How could this writing be preserved? | By baking the tablets. This would remove the moisture from the tablets and harden them. |
240 | How big are the tusks of an Indian female elephant? | Indian female elephants do not have tusks. |
241 | Bats cannot see. Then how do they move about? | They emit sounds of low intensity, which are reflected from the objects around them. This helps the bats to move about. |
242 | How does a frog catch an insect? | It throws out its tongue, which is sticky and catches the insects. |
243 | What is a Portuguese Man of War? | A name commonly applied to jelly fish, found in tropical seas. |
244 | Why are oceans important to man? | They enable man to travel to distant corners of the world. They also provide food, oil and minerals. |
245 | What is the transparent portion in front of the eyeball called? | Cornea. |
246 | What is the meaning of the pecking order? | Pecking order is an example of hierarchy among animals, particularly hens. In a coup containing hens and cocks, the seniormost cock can peck at all the other hens and cocks in the coup. A hen can peck at others weaker than it, but must permit pecking by senior members in the hierarchy. |
247 | Who made trains run by steam engine popular? | George Stephenson |
248 | How are volcanoes caused? | Deep under the crust of the earth is molten rock or lava, also called magma. It is under great pressure because of the intense heat around it and the weight of the earth's crust. When this hot boiling mass finds an outlet in the underside of the earth's crust, it comes through the surface as lava. |
249 | What is a male ant called? | Drone. |
250 | How can a frog make such a loud sound? | As the frog forces air from the lungs, vocal chords in the voice box (larynx) vibrate to make calls, distinctive of its species. The bulls of some species have air sacs, which help, increase the volume of the sound. |
251 | Who was the first man on the moon? | Neil Armstrong. |
252 | What is peristalsis? | Peristalsis is a type of movement occurring in the hollow organs of animals, which causes their contents to be pushed ahead. |
253 | What are the main differences between an Indian elephant and an African elephant? | The African elephant is much larger in size. Its ears as well as tusks are larger than those of an Indian elephant. |
254 | What is it that silkworms weave around themselves? | Cocoon. |
255 | Why did Dr. Lister use carbolic acid to cover wounds? | To prevent infection. |
256 | What is the juice of the rubber plant called? | Latex |
257 | Why does the ostrich eat sand or gravel? | To digest its food. |
258 | Which discovery made soap-making a big industry? | It was discovered (in 1787) that caustic soda can be made from common salt. Since soap is made from caustic soda and fat, manufacturing soap became cheaper. |
259 | Who invented the Gramophone? | Thomas Alva Edison |
260 | Which is the largest living bird? | Ostrich. |
261 | Why didn't the British plant rubber in England? | Rubber grows only in tropical countries. |
262 | Why do tigers turn into man-eaters? | When tigers become old or are incapacitated because of injury, they prey on human beings. A tiger that has preyed on man and has tasted human flesh often continues to prey on man. |
263 | What was called Penny-farthing? | The cycle whose front wheel was much larger than the rear wheel. It was invented by James Starley. It was derisively named penny-farthing after the largest and smallest English copper coins of the period. |
264 | Why does not the moon have an atmosphere? | Even if it had some atmosphere, its mass is so low that gravity on the surface is not enough to retain the atmosphere. |
265 | Name the animal that has the largest eyes in the world? | The Atlantic Giant Squid, about 30 cm wide. |
266 | Who invented the four-stroke Motorcar engine? | Nikolaus Otto. |
267 | What are meteorites? | They are rocks or pieces of rocks that enter the atmosphere and are usually burnt out before landing on earth. Some large meteorites can crash against the surface of the earth and cause damage. |
268 | What did ancient Romans think lightning was? | Jupiter's weapon. |
269 | Are the soldier ants male or female? | They are all female. |
270 | What is the nest of a penguin made of? | Pebbles. |
271 | What are the characteristics of a parasitic plant? | They cannot produce their own food and obtain food from other sources. |
272 | What keeps the sun so hot? | A reaction similar to that of a hydrogen bomb takes place continuously in the sun. Two atoms of hydrogen fuse at high temperatures to form an atom of helium. Immense heat is released in this reaction. |
273 | What is meant by Binary System? | We carry out everyday calculations, using the decimal system, with the numbers 1 to 9 and zero. The binary system uses only two numbers 0 and 1. An electric current can be switched on and off using off for 0 and on for 1. Any number can be represented in the binary system. |
274 | Which was the first spaceship launched by man? | Sputnik-I, launched by the Russians |
275 | What kind of nests do owls build? | They don't build nests. They use hollows in trees for laying eggs. |
276 | Why is polished rice less healthy than unpolished rice? | The husk of food grains (rice, wheat, etc) has Vitamins, much of which are lost when the grains are polished. |
277 | Which Psychologist devised the IQ test? | Alfred Binet. |
278 | Who discovered Radium? | Pierre and Marie Curie. |
279 | What is the approximate temperature deep inside the sun? | 14 million degrees C. |
280 | What are Epiphytic plants? | Plants that grow on other plants for support. These plants however do not take nourishment from the host. |
281 | Sometimes the eagle spits out pellets from its mouth. What are they? | Bones and fur of the prey that are left after the food is digested. |
282 | What does a ruminant mean? | 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. |
283 | Who discovered the Planet Uranus? | Sir William Herschel. |
284 | Who invented Television? | John Logic Baird. |
285 | How do dolphins communicate with each other? | By producing screeching sounds. |
286 | Who was the first woman to travel in space? | Valentina Tereshkova. |
287 | What are clouds made of? | Tiny droplets of ice or water. |
288 | What is the disease that causes dogs to turn mad? | Rabies. |
289 | Who conducted the first controlled fission reaction (that led to the making of the atom bomb)? | Enrico Fermi. |
290 | Which was the first satellite launched by India? | Aryabhata, in 1975. |
291 | What is Dry Ice? | Solid Carbon Dioxide. |
292 | Who invented the Radio? | G. Marconi (Jagadis Chandra Bose has also been credited with this discovery but his claim has not been recognised). |
293 | What was the theory of the atom put forward by Rutherford? | Rutherford put forward the theory that every atom consists of a tiny nucleus with a positive charge, surrounded by electrons. The electrons are far apart from the nucleus and from one another. |
294 | Of which element is diamond made of? | Carbon. |
295 | The Pit Viper has poor eyesight. Yet it can locate its prey accurately. How? | It has heat sensory cells in the pits between the eye and the nostril, which detect warm-blooded animals. |
296 | Who first propounded the theory of Evolution of Man? | Charles Darwin. |
297 | From which elements is steel made? | Iron and Carbon. |
298 | Which instrument is used for measuring humidity? | Hygrometer. |
299 | If you speak loudly on the moon, approximately how far can your voice travel? | Sound waves need a medium in which they can travel. The atmosphere on the moon is negligible. Hence your voice cannot travel any distance. |
300 | What is the difference between Toads and Frogs? | Toads have a dry warty skin while frogs have a smooth moist skin. |
0 Comments