Answer: When a liquid changes to gas, the particles absorb heat energy and they start vibrating faster and distance between them increases. On... View Article
Answer: The pitch of a screw reflects the linear distance traversed by the screw in one complete rotation. Pitch is the distance measured... View Article
Answer: Antoine Lavoiser gave the law of conservation of mass. The law of conservation of mass states that the mass in an isolated system can... View Article
Answer: Rabies is a viral disease that is spread through the animal bite such as the dog. It is caused by the infection of rabies virus. The... View Article
Pure gold is 24 carats. It is very soft so, it cannot be used for making jewellery. Hence, it is alloyed with silver or copper to make it hard to... View Article
Answer: Aristotle is known as the Father of Biology. Aristotle was born in 384 BC. In the 4th century BC, Aristotle travelled to Lesvos... View Article
Answer: Ultrasonic waves are used for sound ranging. Sound waves with frequencies higher than the upper audible limit of human hearing are... View Article
Answer: Metallic minerals containing one or more metals. These usually occur as mineral deposits and are a great heat and electricity conductor.... View Article
Answer: Painting of the Iron surface is a type of corrosion prevention method. The Iron materials can be prevented from corrosion by painting... View Article
Answer: They have to produce heat for keeping their body warm. Birds and mammals are warm-blooded animals that maintain a constant body... View Article
Answer: Sclerenchyma tissue makes up the husk of the coconut. Sclerenchymatous tissue makes up the husks of coconuts. Nuts and fruits are... View Article
Answer: Pluto is known as the dwarf planet. Dwarf planets are heavenly bodies that are too small to be considered a planet but too large to... View Article
Answer: Sound is produced by vibrating objects. Voicebox or larynx is a part of the throat which produces sound in humans. It has two vocal... View Article
Answer: Metallic oxides are basic in nature. Metallic oxides are basic. When metal oxides are dissolved in water or reacted with dilute acids,... View Article
Answer: Life on earth evolved from a single cell millions of years ago. Unicellular species are made up of only one cell. In a unicellular... View Article
Answer: Since radium belongs to alkaline earth metals, its oxide is basic in nature. Radium is the heaviest known alkaline earth metal and... View Article
Answer: Carbylamine reaction is given by aliphatic and aromatic primary amines. Carbylamine reaction is used as a test for the identification... View Article
Answer: Simple harmonic motion can be described as an oscillatory motion in which the acceleration of the particle at any position is directly... View Article