181. Bromine is a red-brown liquid.
182. Smoking cigarettes impacts red blood cells by decreasing their ability to carry oxygen.
183. The blueness of the sky is mainly due to the scattering of sunlight by air molecules.
184. The earth’s atmosphere is divided into layers based on the vertical profile of air temperature.
185. The outermost layer of skin is the epidermis.
186. The phases of the moon are partially the result of the revolution of the moon around the earth.
187. The first person to measure the earth’s radius was Eratosthenes.
188. The central color of a rainbow is green.
189. Gamma rays were discovered by Paul Villard.
190. The horizontal rows of the periodic table are called periods.
191. Earth takes 4 minutes to cover 1° longitude.
192. Japan is called the “Land of the rising sun” because it being the Easternmost country in the world, it has the earliest sunrise.
193. The approximate age of the earth is 4.54 billion years.
194. Tocopherol is not a water-soluble vitamin.
195. The distance between Earth and the Moon is 3,84,400km.
196. One Joule is equal to 10^7 ergs.
197. Dissolved oxygen (DO) in water should be 4 to 5 ppm.
198. The study of fish is known as Ichthyology.
199. A dolphin perceives its environment by the sense of sound.
200. The telephone was invented by Alexander Graham Bell.