81. Oil of vitriol is sulfuric acid.
82. The study of rearing fine and intelligent human beings through genetics is called eugenics.
83. The range of the normal human hearing is 20 Hz to 20 kHz.
84. Ole Roemer first measured the velocity of light.
85. The average kinetic energy of the molecules of a body determines temperature.
86. The post-mortem examination of a body is called an autopsy.
87. The study of soil is called pedology.
88. The toxicity of lead leads to liver cirrhosis.
89. P Waves are also said to be push-pull waves.
90. Pluto was cast out from the list of planets on August 24, 2006.
91. The three basic units of measurement for the metric system are metre, litre, and gram.
92. The olfactory nerves affect the sense of smell in the brain.
93. The mixture of gases required in gas welding is oxygen and acetylene.
94. The sun is about 109 times bigger than the size of the Earth.
95. A worm has no eyes.
96. “Grévy’s Zebra” has about 80+ stripes on each side.
97. “Mohs’ Scale” is used to indicate the degree of hardness of minerals.
98. Evaporation of alcohol represents a chemical change.
99. The liver uses vitamin B12 for creating new red blood cells.
100. The rising of the evening star indicates the direction of the West.