Answer: In a decomposition reaction, a single reactant decomposes to form a number of products. A decomposition reaction can be defined as a... View Article
The ear ossicles are the three smallest bones in the human body, the malleus, the incus and the stapes, and they help in amplifying the sound... View Article
Answer: When exposed to moisture, noble metals are resistant to oxidation and corrosion. Noble metals are resistant to acid attack. They are the... View Article
Answer:Â (3) When its components have both the above characteristics An ideal solution is a mixture in which the molecules of different species... View Article
Answer: Xylem is the tissue that helps in the transport of water and dissolved substances throughout the plant. Xylem is located in the roots,... View Article
The reaction of acid and water is an exothermic reaction since a lot of heat is liberated during the reaction. This heat changes some water to... View Article
Answer: Roasting is done generally in the case of sulphide ores. Roasting is a metallurgical process in which ore is heated below its melting... View Article
Answer: Cell wall is present in plants, but absent in animals. A cell wall is defined as a rigid, external layer that is specifically designed... View Article
Answer: Work is said to be done when a force applied to an object moves that object. We can calculate work by multiplying the force by the... View Article
Answer: Friedel Crafts reaction is an electrophilic substitution reaction. The two primary types of Friedel-Crafts reactions are the alkylation... View Article
Fern is an avascular, seedless plant that belongs to the group Pteridophyta. There are about 12 000 types of ferns that vary in size, morphology... View Article
The lustre of a metal is due to the presence of mobile (free) electrons in it. The free electrons can move freely in the metal, causing any... View Article
Answer: The minerals from which metals can be profitably extracted are called Ores. Mining is the method of extracting metal ores from deep... View Article
Answer: 1.6 x 10-19 coulomb is the charge on an electron. An electron is a subatomic particle commonly represented as e– or e. It possesses... View Article
Answer: The distance between the sun and the earth is 150.82 million km. The distance is referred to as one astronomical unit-the distance... View Article
Answer: Bond Enthalpy is a quantity that offers insight into the strength of a chemical bond and, by extension, its stability. The bond enthalpy... View Article
Answer: A co-ordinate bond is a type of alternative covalent bond formed when an electron pair from a single atom is shared. The same atom... View Article
A complete flower is the one that consists of sepals, petals, stamens and pistil. On the contrary, an incomplete flower is the one that lacks one... View Article
Answer: It is a dimensionless quantity with unit radians as it is an angle. The phase constant, also known as the phase change constant,... View Article
Answer: Insulators, also known as bad conductors, are materials that prevent electrons from freely flowing from one element's particle to... View Article
