Answer: All of the above Earth is our life. Protecting our earth from pollution or any other hazard is our duty. So pollution free environment is... View Article
The unwanted substance which can be the by product or used things is considered as waste. Mainly there are two types of wastes. Biodegradable and... View Article
Ozone (O3) is a molecule, made up of three atoms of oxygen. The ozone layer is a natural layer of gas in the upper atmosphere that protects... View Article
Substances are classified as biodegradable and non-biodegradable because some substances can be decomposed by microorganisms and some cannot.... View Article
The various links or steps in a food chain at which the transfer of food and energy takes place are called trophic levels. The producers form... View Article
Neurons are the fundamental unit of the nervous system. Neurons are also called as nerve cells. The main function of the neurons is to pass the... View Article
When a plant exhibits some growth movement in response to a stimulus, it is referred to as tropism. Tropism is specific to the direction of the... View Article
The transport system of organised plants consists of xylem and phloem. Xylem which has vessels and tracheids transports water and minerals... View Article
Answer: Kinetic energy of an object is the measure of the work an object can do by the virtue of its motion. Kinetic energy is a scalar quantity.... View Article
Answer: Kinetic energy of an object is the measure of the work an object can do by the virtue of its motion. Kinetic energy is a scalar quantity.... View Article
Answer: Elements – Elements constitute the simplest chemical substances in which all the atoms are exactly the same. Compounds – Compounds are... View Article
Answer: Add a cup of milk, which serves as the solvent, to the vessel and heat it. To make a solute, add tea powder or tea leaves to boiling... View Article
Answer: All on this planet is a type of matter, which is described as any substance that occupies space and has mass. The matter is further... View Article
Answer: Crystallization is a method for separating solids from a liquid solution. It is related to precipitation, but in this method, the... View Article
Answer: The majority of the time, the compounds we encounter are not in their purest form. They are, in fact, a combination of two or more... View Article
Answer: (c) Different number of neutrons It is also defined as variants of a particular element where these variants will have the same number of... View Article
Answer: (a) Atomic nucleus According to the Rutherford atomic model: The positively charged particles and most of the mass of an atom was... View Article
Answer: The atomic mass of an element is the mass of one atom of that element. Average atomic mass takes into account the isotopic abundance.... View Article
