Last seen: Sep 10, 2021
No, it is not possible. Detergents produce foam in any type of water; whether hard or soft Therefore, a distinction between the two cannot be made. Ho...
Oxidising agents are the substances which either on their own or on reacting with another substance release oxygen in order to carry oxidation reactio...
The distinction can be made by the following, tests: (a) Dip a strip of blue litmus paper separately in both alcohol and carboxylic acid taken in tw...
When ethyne is burnt in oxygen, a large quantity of heat along with light is produced. The heat evolved can be used for gas welding which is usually c...
Ethanoic acid (CH3COOH) has one oxygen atom more and two hydrogen atoms less than ethanol (C3H5OH). In general, Loss of hydrogen is known as oxida...
Cyclopentane is a cyclic compound with the formula C5H12. The structure of the compound may be represented as: figure.png
(a) Catenation: Carbon has the unique property of self-linking which is known as catenation. In fact, any number of carbon atoms can be linked to one ...
Pentane (C5H12) has a skeleton of five carbon atoms. It can exist as a straight chain as well as two branched chains. There are three structural isome...
The atomic number (Z) of sulphur is sixteen and its electronic configuration is 2, 8, 6. The sulphur atom has six valence electrons. The chemical form...
The atomic number (Z) for carbon is six and its electronic configuration is 2, 4. Carbon has four valence electrons. Each oxygen atom (Z = 8) has six ...
(a) (i) Atomic number (Z) of sodium (Na): 11 Electronic distribution: K(2), L(8), M(1) Electron dot structure: Na (ii) Atomic number (Z) of magn...
1. Property: Electrochemical character Metals : Metals are electropositive in nature, i.e. they lose electrons to form positively charged ions. F...
Copper is a better conductor of heat than steel which is an alloy of iron. Due to this property, copper is used to make water tanks for storing hot wa...
The man had actually used the solution of aqua regia (mixture of cone. HCl and cone. HNO3 in the ratio of 3 :1 by volume) which has dissolved gold for...
Copper metal slowly reacts with water, carbon dioxide and oxygen present in air to form a layer of basic copper carbonate which is greenish in colour....
(a) These metals are placed at the bottom of the activity series and are least reactive in nature. Gold and platinum are known as noble metals. They a...
The oxides are generally acidic in nature which means that when they are dissolved in water, their solutions change blue litmus into red. For examp...
Prevention of Rusting: It can be prevented by coating the metal surface with red lead paints enamel oil or grease plastic coating galvanising...
(a) The gas is sulphur dioxide (SO2). It will not react with dry litmus paper. (b) The gas will bleach moist litmus paper. The moist litmus paper ch...
Anode: Rod of impure metal Cathode: Rod of pure metal Electrolyte: Aqueous solution of soluble salt of metal M.