Water is a liquid while hydrogen sulphide is a gas because the hydrogen bonding in water causes the water molecules to be associated with each... View Article
When phenol is treated with hot conc. nitric acid in the presence of conc. sulphuric acid yellow coloured picric acid is produced. The reagent... View Article
The oxidation state of each oxygen atom is -1/2 since it is a superoxide ion. Let the oxidation state of K be x. x + 2(-1/2) = 0 2x-2 = 0 2x=2 x=+1... View Article
The oxidation of oils or fats in food resulting in a bad smell and bad taste is called rancidity. When unsaturated components of a fatty material... View Article
Alcoholic fermentation is a process of anaerobic respiration in which 2 molecule of glucose is converted to 4 molecules of ethanol, 4 molecules... View Article
When chloroform is mixed with nitrogen gas, a gaseous solution is formed. Chloroform vapours mixed with nitrogen gas is a form of liquid in gas.... View Article
Galvanized iron has a layer of zinc. The added layer of zinc helps to protect the iron from rust and corrosion. There are several methods used to... View Article
Given that mass of sugar = 34.2 g No. of moles of sugar = 34.2/molecular mass = 34.2/342 = 0.1 Mass of water = (214.2-34.2)=180g= 180/1000Kg No.... View Article
Soaps are water-soluble sodium or potassium salts of fatty acids. The process is termed saponification reaction in which a strong base is warmed... View Article
Ionization is the process by which atoms or molecules get a positive or negative charge which can be cation or anion due to the gaining or losing... View Article
Answer: The representation of a chemical reaction in the form of substances is known as a chemical equation. The equation in which the number of... View Article
Transition elements (also known as transition metals) are elements that have partially filled d orbitals. IUPAC defines transition elements as an... View Article
When methyl alcohol reacts with hydrogen chloride, it leads to substitution of alcoholic group and results in the formation of chloromethane.... View Article
Answer: Milk is converted into curd or yogurt by the process of fermentation. Milk consists of globular proteins called casein. The curd... View Article
Boron forms some interesting inorganic compounds with nitrogen, most important of which is a borazine compound with the chemical formula B3N3H6 .... View Article
Drying wet clothes is a physical change because the clothes are same as it got dried from removing water content. The composition is same nothing... View Article
Photochemical smog which is mainly composed of ozone (O 3 ), Peroxyacetyl nitrate (PAN) and Nox, is also known as brown air where solar radiation... View Article
The fluorine atom has 7 electrons in the outermost shell. In the case of fluoride ion , the charge is +1, thus its valency is considered as 1.... View Article
