The downhill movement of masses of rock debris and other materials under the direct influence of gravity is termed mass movement.... View Article
Excess accumulation of greenhouse gases such as carbon dioxide, methane, nitrous oxide, ozone, CFC causes warming of the earth is... View Article
Atomic number (Z) = Number of protons = Number of electrons. Therefore, the atom has 11 electrons. How to find... View Article
The number of molecules per unit volume of a gas is much lower than compared to solids and liquids. therefore,... View Article
Oxygen is used for respiration in living organisms which reacts with food and release energy. What is respiration? Respiration is... View Article
The frequency of the sound wave, n= 220 Hz Speed of the sound wave, v = 440 m/s For a... View Article
During filtration, the solution collected at the bottom of the conical flask is called the filtrate. What are filtration and... View Article
The scattering of light by colloidal particles present in a colloidal solution is called the Tyndall effect. The Tyndall effect... View Article
The element having atomic number 20 is placed in the Group IIA and 4th period of the periodic table. The... View Article
The main source of water vapour is the burning of hydrocarbon which produces carbon dioxide and water vapour. Hydrocarbons are... View Article
The v-t graph and this can also be verified dimensionally.
The main cause of acid rain is the formation of mineral acids like nitric acid and sulphuric acid What causes... View Article
Fuels like coal, petrol, diesel and natural gas are burnt, carbon dioxide gas is released in large volumes. A chemical process... View Article
Answer: Skin: Squamous epithelial tissue- Describes a single layer of cells that are flat and scale-like in shape. The bark... View Article
The equation for kinetic energy is KE ∝ T KE1 / KE2 = n1T1 /n2T2 3/KE2 = N × 200/N... View Article
The atomic mass of an element is the average mass of the atoms of an element measured in the atomic... View Article
The frictional force is a force, which always opposes the motion of one body over the other body in contact... View Article
The chemical reactions which proceed with the absorption of light energy are called photochemical reactions. Photochemical reaction A photochemical reaction... View Article
Electrolysis is a process by which electrical energy is used to produce a chemical change. The process of decomposition of... View Article
This is the method used to prepare sodium oxide: 2NaNO3 + 10Na + Na2O + N2 Sodium nitrate when heated... View Article
