Metallic oxide is reduced to metal during the extraction of metals. The process of extraction of metals from their ores is called metallurgy.... View Article
The percentage of oxygen present in the atmosphere is about 20.94%. The most abundant naturally occurring gas is Nitrogen (N2), which makes up... View Article
The proportion of carbon dioxide in the atmosphere is about 0.03% Carbon dioxide is an important long-lived trace gas in Earth's atmosphere... View Article
If the Hypocotyl does not elongate, then it is ______ germination The hypocotyl does not elongate much. Instead, the epicotyl grows and... View Article
Answer: The total sum of the masses of the atoms or elements present in the molecule is termed as molecular mass. i) Molecular mass of H2= 2 x... View Article
Answer: Lipids are synthesized in the Smooth endoplasmic reticulum (SER), and the proteins are synthesized in the rough endoplasmic reticulum... View Article
When chlorine water is exposed to diffused sunlight, it evolves colourless and odourless oxygen gas. When chlorine water is exposed to sunlight,... View Article
Water is known as the universal solvent because many substances dissolve in it. Water has the ability to dissolve a variety of different... View Article
The modern Periodic table contains 7 periods. There are two ways of categorizing elements in the periodic table. Periods are horizontal rows... View Article
If X is a non-metal, Its Oxide X2O3 is expected to be an acidic oxide X is a non-metal it mainly forms acidic oxides. Metals form basic... View Article
Reactions in which the more reactive element displaces the less reactive element from its compound are called displacement reactions Pb(S) +... View Article
The above reaction is endothermic. The chemical reactions which proceed with the absorption of heat energy are called endothermic reactions.... View Article
Corrosion is the formation of metal oxide when exposed to moist air. Rust is iron oxide. Corrosion occurs in the presence of moisture. For... View Article
UV radiation Salting prevents biodegradation of food under normal conditions, while drying and sun-drying inhibit the growth of microbes UV... View Article
The number on an ion or a radical indicates the valency of that radical. A group of atoms that behaves like a single unit and shows valency is... View Article
An acid can be defined as a compound that, when dissolved in water, gives hydronium ions (H3O+). An alkali (or a base) is a compound that yields... View Article